DataDirect Networks S2A9550 User manual

DataDirect Networks
Silicon Storage Appliance
S2A9550
User Guide
Rev 4.0

ii DataDirect Networks S2A 9550 User Guide
Important Information
Information in this document is subject to change without notice and does not represent a commitment on the part of DataDirect Networks, Inc. No part
of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, for any
purpose other than the purchaser’s personal use without the written permission of DataDirect Networks, Inc.
© 2005 DataDirect Networks, Inc. All rights reserved.
DataDirect Networks, the DataDirect Networks logo, Silicon Storage Appliance, SF2016, SF4016, SF6016, SA2012, and SA2016 are trademarks of DataDirect
Networks, Inc. All other brand and product names are trademarks of their respective holders.
DataDirect Networks’ Licensor(s) makes no warranties, express or implied, including without limitation the implied warranties of merchantability and
fitness for a particular purpose, regarding the software. DataDirect Networks’ Licensor(s) does not warrant, guarantee or make any representations
regarding the use or the results of the use of the software in terms of its correctness, accuracy, reliability, currentness, or otherwise. The entire risk as to
the results and performance of the software is assumed by you. The exclusion of implied warranties is not permitted by some jurisdictions. The above
exclusion may not apply to you.
In no event will DataDirect Networks’ Licensor(s), and their directors, officers, employees, or agents (collectively DataDirect Networks’ Licensors) be liable
to you for any consequential, incidental, or indirect damages (including damages for loss of business profits, business interruption, loss of business
information, and the like) arising out of the use or inability to use the software even if DataDirect Networks’ Licensor has been advised of the possibility
of such damages. Because some jurisdictions do not allow the exclusion or limitation of liability for consequential or incidental damages, the above
limitations may not apply to you. DataDirect Networks’ Licensor’s liability to you for actual damages from any cause whatsoever, and regardless of the form
of the action (whether in contract, tort (including negligence), product liability or otherwise), will be limited to $50.
FCC Radio Frequency Interference Statement
The equipment described in this manual has been tested and found to comply with the limits for a class A device, pursuant
to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in
a residential installation. This equipment generates, uses, and can radiate radio frequency energy, and, if not installed and
used in accordance with instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference
to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to
try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna
• Increase the separation between the equipment and the receiver
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected
If necessary, consult your dealer’s service representative or DataDirect Networks for additional suggestions.
Printed in the USA
08/06
Document Number 96-00150-001 Rev 4.0
AF

Important Information
DataDirect Networks S2A 9550 User Guide
iii
STANDARD WARRANTY
Definitions: This two-year limited warranty applies to the following DataDirect Networks network infrastructure and individual SAN solution components
that include: Silicon Storage Appliance Hardware, Drive Modules, RAID Hardware Components, Storage Hardware Components, and Disk Drive Docking
Bays and Enclosures (hereinafter “DataDirect Networks Products”). Fibre Channel Interface Kits, SCSI Interface Kits, Host Adapters and Networking
Products are limited to a 90-day warranty. Software bundled or included with DataDirect Networks solutions are furnished exclusively under the terms of
the applicable license agreements.
Warranty: DataDirect Networks warrants that the DataDirect Networks Products accompanied by this limited Warranty are free from defects in material
and workmanship for a period of two years from the date of original purchase from DataDirect Networks or an authorized DataDirect Networks reseller.
During the term of this Warranty, DataDirect Networks will, at its option, repair or replace any defective parts of the DataDirect Networks products
purchased under this Warranty at no additional charge. Repair parts or replacement DataDirect Networks products will be furnished on an exchange basis,
and will be either reconditioned or new. When returning the DataDirect Networks products, the Purchaser must prepay any shipping charges. In addition,
the Purchaser is responsible for insuring the products returned and assumes the risk of loss during shipment.
Warranty Claim Requirements: Purchaser claims made pursuant to this Warranty must conform to the following requirements:
1. The DataDirect Networks products must be returned to (a) an Authorized DataDirect Networks Servicing Reseller in the country of original purchase,
or (b) a DataDirect Networks facility which performs Warranty service in the country of original purchase, or (c) an Authorized DataDirect Networks
Third Party Service Provider in the country of original purchase.
2. The Purchaser must provide proof of purchase and date of purchase from DataDirect Networks or an Authorized DataDirect Networks Reseller.
3. The Purchaser may request information on how to obtain warranty service by contacting any Authorized DataDirect Networks Reseller, or by writing to
the Warranty Service Department, DataDirect Networks, 9320 Lurline Avenue, Chatsworth, CA 91311.
Disclaimers: THIS LIMITED WARRANTY DOES NOT APPLY TO ANY DATADIRECT NETWORKS PRODUCTS WHICH HAVE BEEN DAMAGED OR
RENDERED DEFECTIVE (a) AS A RESULT OF ACCIDENT, MISUSE, OR ABUSE; (b) BY THE USE OF PARTS NOT MANUFACTURED OR SOLD BY
DATADIRECT NETWORKS; (c) BY MODIFICATION WITHOUT THE WRITTEN PERMISSION OF DATADIRECT NETWORKS, OR (d) AS A RESULT OF
SERVICE BY ANYONE OTHER THAN DATADIRECT NETWORKS, AN AUTHORIZED DATADIRECT NETWORKS SERVICING RESELLER, OR AN
AUTHORIZED DATADIRECT NETWORKS THIRD PARTY SERVICE PROVIDER.
EXCEPT AS EXPRESSLY SET FORTH ABOVE, DATADIRECT NETWORKS MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PURPOSE, AND DATADIRECT
NETWORKS EXPRESSLY DISCLAIMS ALL WARRANTIES NOT STATED HEREIN. IN THE EVENT THE PRODUCTS ARE NOT FREE FROM DEFECTS
AS WARRANTED ABOVE, THE PURCHASER'S SOLE REMEDY SHALL BE REPAIR OR REPLACEMENT AS PROVIDED ABOVE. UNDER NO
CIRCUMSTANCES WILL DATADIRECT NETWORKS BE LIABLE TO THE PURCHASER, OR TO ANY USER, FOR ANY DAMAGES, EXPENSES, LOST
PROFITS, LOST SAVINGS, DAMAGE TO OR REPLACEMENT OF EQUIPMENT AND PROPERTY, COSTS OF RECOVERING, REPROGRAMMING, OR
REPRODUCING ANY PROGRAM OR DATA STORED IN OR USED WITH THE PRODUCTS, OR OTHER DAMAGES ARISING OUT OF THE USE OR
INABILITY TO USE THE DATADIRECT NETWORKS PRODUCTS.
ANY IMPLIED WARRANTIES ARE LIMITED TO THE TERMS OF THIS EXPRESS LIMITED WARRANTY. SOME STATES DO NOT ALLOW THE
EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR CONSUMER PRODUCTS, AND SOME STATES DO NOT ALLOW
LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATIONS OR EXCLUSIONS MAY NOT APPLY TO YOU. THIS
WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE.

iv DataDirect Networks S2A 9550 User Guide
Important Information
SUPPLEMENTAL DISTRIBUTION AGREEMENT
This SUPPLEMENTAL DISTRIBUTION AGREEMENT (the “Agreement”) is made and entered into as of the date specified below (the “Effective Date”) by and
between WIND RIVER SYSTEMS, INC., a Delaware corporation having a principal place of business at 500 Wind River Way, Alameda, CA 94501 (“Wind River”),
and DataDirect Networks, Inc., a California corporation having a principal place of business at the address set forth on the Production Exhibit attached
hereto (“Customer”).
RECITALS
A. Customer has previously acquired or is simultaneously acquiring from Wind River rights to use internally certain Software in the development of
a Run-Time Module for incorporation into Customer’s Target Application.
B. Customer now desires to obtain the rights to reproduce and distribute the Run-Time Module as incorporated into the Target Application and Wind
River is willing to grant Customer such license rights upon the terms and conditions set forth herein.
NOW, THEREFORE, in consideration of the mutual promises and covenants contained herein, Customer and Wind River agree as follows:
AGREEMENT
1. DEFINITION OF TERMS
1.1 “Approved CPU” means the host computer on which the Software, per its documentation, is intended to operate and upon which Customer
installs and uses the Software, as specified in Exhibit A.
1.2 “Authorized Site” means the specific address of Customer’s facility consisting of a single building or multiple buildings on a contiguous
campus where the Approved CPU upon which the Software is first installed and put into use is physically located, as specified in the Production Exhibit.
1.3 “End User” means any entity to which Customer provides its Target Application.
1.4 “Object Code” means software in a form not readily perceivable by humans and suitable for machine execution without the intervening steps
of interpretation or compilation.
1.5 “Production Exhibit” means an Exhibit to this Agreement, signed by Customer and by Wind River, which identifies: (i) the specific Run-Time
Module; (ii) the number of copies of the Run-Time Model which Customer is authorized to make and distribute pursuant to this Agreement; (iii) the Target
Application; (iv) the per copy royalty Customer must pay Wind River for each Run-Time Module; and (v) any other related information.
1.6 “Run-Time Module” means an Operating System Component in Object Code form, identified in the Production Exhibit, or any portion thereof,
which Customer may be authorized to furnish to End Users as inseparably embedded code within a Target Application.
1.7 “Target Application” means an item, device or system manufactured by Customer, as described in the Production Exhibit, that contains a
Run-Time Module, or any portion thereof, including any modified or successor version of said item, device or system.
2. LICENSE.Subject to the terms and conditions of this Agreement, and Customer’s payment of the applicable fees, Wind River grants to Customer a
non-exclusive, non-transferable, royalty-bearing license: (i) to reproduce the number of copies of the Run-Time Module authorized in the Production
Exhibit, solely in Object Code form, at the Authorized Site; (ii) to distribute the Authorized Run-time Module to End Users worldwide, solely as inseparably
embedded content in the Target Application; and (iii) to sublicense End Users, subject to the restrictions in Section 3.2, the right to use the Authorized
Run-Time Module in connection with the operation of the Target Application.
3. RESTRICTIONS.
3.1 Restrictions. Customer shall not list or quote a Run-Time Module as a separately priced item or option. Customer shall configure the Run-Time
Module within Customer’s Target Applications, so that they will not operate apart from the operation of the Target Application.
3.2 End User Agreements. Customer shall take all steps necessary to protect Wind River’s and its licensors’ proprietary rights in the Run-Time
Module and to ensure that each Run-Time Module distribute by Customer will be accompanied by a localized copy of an End User license agreement. Such
End User license agreement shall prohibit the End User from: (i) copying the Run-Time Module, except for archive purposes consistent with the End User’s
archive procedures; (ii) transferring the Run-Time Module to a third party apart from the Target Application; (iii) modifying, decompiling, disassembling,
reverse engineering or otherwise attempting to derive the Source Code of the Run-Time Module; (iv) exporting the Run-Time Module or underlying
technology in contravention of applicable U.S. and foreign export laws and regulations; and (v) using the Run-Time Module other than in connection with
operation of the Target Application. In addition, the End User license agreement shall: (i) state that the Run-Time Module is licensed, not sold and that
Customer and its licensors retain ownership of all copies of the Run-Time Module; (ii) expressly disclaim all warranties; (iii) disclaim all implied warranties
including, without limitation, the implied warranties of merchantability, fitness for a particular purpose, title and non-infringement; and (iv) exclude liability
for any special, indirect, punitive, incidental and consequential damages. The End User license agreement shall also state that, with respect to the Run-Time
Module, Wind River and its licensors are third party beneficiaries of the End User license agreement and that the provisions related to the Run-Time Module
are made expressly for the benefit of, and are enforceable by, Wind River and its licensors.
4. ORDERING, PAYMENT, TAXES AND RECORDS.
4.1 Ordering and Payment. Upon execution of the Production Exhibit, Wind River will invoice and Customer shall pay any applicable fees for
the distribution of the specified number of Run-Time Modules as set forth in the Production Exhibit. Customer may, pursuant to the terms set forth in the
Production Exhibit, obtain the right to reproduce and distribute additional Run-Time Modules through the submission of purchase orders referencing the
applicable Production Exhibit. Wind River will invoice Customer for such additional Run-Time Modules upon confirmation and acceptance of Customer’s
purchase order. Payment of all amounts shall be due thirty (30) days after receipt of invoice or, for royalty payments, within thirty (30) days of the end of
each calendar quarter. Interest on any late payments shall accrue at the rate of one and one-half percent (1.5%) per month, or the highest rate permitted by
law, from the date such amount is due until finally paid. Any failure of Customer to make timely payment of any invoice may, at Wind River’s discretion, be
deemed a material breach of this Agreement.
4.2 Taxes. All payments and amounts due hereunder shall be paid without deduction, set-off or counter claim, and free and clear of any restrictions
or conditions, and without deduction for any taxes, levies, imposts, duties, fees, deductions, withholdings or other governmental charges, excluding taxes
on Wind River’s overall net income. If any deduction is required to be made by law, Customer shall pay in the manner and at the same time such additional
amounts as will result in receipt by Wind River of such amount as would have been received by Wind River had no such amount been required to be
deducted. If Customer is claiming sales or use tax exemption, a certified Tax Exempt Certificate must be attached to this Agreement or applicable purchase
order submitted by Customer.

Important Information
DataDirect Networks S2A 9550 User Guide
v
DataDirect Networks
END-USER LICENSE AGREEMENT
for
SILICON STORAGE APPLIANCE SOFTWARE AND/OR FIRMWARE
IMPORTANT - READ CAREFULLY
DO NOT INSTALL YOUR SILICON STORAGE APPLIANCE UNTIL YOU HAVE CAREFULLY READ THIS LICENSE AGREEMENT AND UNDERSTAND
ALL OF THE RIGHTS AND RESTRICTIONS DESCRIBED IN THIS DATADIRECT NETWORKS END-USER LICENSE AGREEMENT (“EULA”) AND
AGREE TO ITS TERMS. INSTALLATION OF THE SOFTWARE AND/OR FIRMWARE IS A SYMBOL OF YOUR SIGNATURE THAT YOU ACCEPT THE
TERMS OF THE EULA.
This EULA is a legal agreement between you (either an individual or a single entity) and DataDirect Networks Corporation (“DATADIRECT”) for the
DATADIRECT software and/or firmware accompanying this EULA, which includes the accompanying computer software and/or firmware, and may
include associated media, printed materials and any “online” or electronic documentation (“SOFTWARE AND/OR FIRMWARE”). By installing the
SOFTWARE AND/OR FIRMWARE, you agree to be bound by the terms of this EULA. If you do not agree to the terms of this EULA, you may not install or
use the SOFTWARE AND/OR FIRMWARE. If you do not agree to the terms of this EULA, do not install the SOFTWARE AND/OR FIRMWARE and
promptly return it within 30 days to the place of purchase for a full refund of all money paid for the product. NO REFUND WILL BE PAID IF THE
SOFTWARE AND/OR FIRMWARE HAS BEEN INSTALLED. By installing the SOFTWARE AND/OR FIRMWARE, you and the manufacturer
(“DATADIRECT”) agree as follows:
SOFTWARE AND /OR FIRMWARE PRODUCT LICENSE
The SOFTWARE AND/OR FIRMWARE is protected by copyright laws and international copyright treaties, as well as other intellectual property laws and
treaties. The SOFTWARE AND/OR FIRMWARE is licensed, not sold, assigned or transferred. DATADIRECT shall own all intellectual property rights in
and to the SOFTWARE AND/OR FIRMWARE.
1. Grant of License. This EULA grants you the following rights:
Subject to your compliance with the terms and conditions of this EULA, DATADIRECT hereby grants you the following limited, nonexclusive and
nontransferable rights in and to the SOFTWARE AND/OR FIRMWARE. You and only you shall have the right to:
² Execute the SOFTWARE AND/OR FIRMWARE only on a single Silicon Storage Appliance.
²Make one copy of the SOFTWARE AND/OR FIRMWARE in machine-readable form, provided that such copy is used only for backup purposes and
the DATADIRECT copyright notice is reproduced on the backup copy.
² Reservation of Rights. All rights not expressly granted are reserved by DATADIRECT.
2. Obligations and Restrictions.
a) You shall be responsible for any breach of this EULA by any party to whom you disclose the SOFTWARE AND/OR FIRMWARE or permit the
use thereof.
b) You shall NOT distribute copies of the SOFTWARE AND/OR SOFTWARE from device to another over a network, or via modem.
c) The SOFTWARE AND/OR FIRMWARE contains trade secrets that are wholly owned by DATADIRECT. You may NOT decompile, reverse
engineer, translate, disassemble, or otherwise reduce the SOFTWARE AND/OR FIRMWARE to a human understandable format.
d) You must at all times use reasonable efforts to maintain the confidentiality of the SOFTWARE AND/OR FIRMWARE and may not sublicense,
transfer, sell, rent, disclose, sell, assign, make available or otherwise communicate the SOFTWARE AND/OR FIRMWARE to any other person or entity,
nor use the SOFTWARE AND/OR FIRMWARE except as expressly authorized herein.
e) The SOFTWARE AND/OR FIRMWARE may only be used in connection with a single unit of the Silicon Storage Appliance.
f) The SOFTWARE AND/OR FIRMWARE may only be used by you, and you shall not permit the SOFTWARE AND/OR FIRMWARE to be used by
or for the benefit of any other party, nor use the SOFTWARE AND/OR FIRMWARE at any time after the EULA terminates.
You and DATADIRECT agree that the provisions contained herein, including the License Restrictions, are for the benefit of DATADIRECT. DATADIRECT
shall be entitled to injunctive relief, as well as such further rights and remedies as it may have at law or equity, against unauthorized disclosure or use of
the SOFTWARE AND/OR FIRMWARE, or against other breach or threatened breach of these provisions.
To use this SOFTWARE AND/OR FIRMWARE for any other purpose than that outlined in this EULA is strictly prohibited. YOU MAY NOT MODIFY,
ADAPT, TRANSLATE, RENT, LEASE, RESELL FOR PROFIT, DISTRIBUTE, NETWORK OR CREATE DERIVATIVE WORKS BASED UPON THE
SOFTWARE AND/OR FIRMWARE OR ANY PART THEREOF.
3. Termination. This EULA is effective until terminated. This EULA will terminate immediately, without any notice from DATADIRECT if you fail to
comply with any of its provisions. Upon termination you must destroy the SOFTWARE AND/OR FIRMWARE and all copies in your possession or control.
You may terminate this EULA at any time by destroying the SOFTWARE AND/OR FIRMWARE and all copies in your possession or control.
4. Copyright. All title and copyrights in and to the SOFTWARE AND/OR FIRMWARE, the accompanying printed materials, and any copies of the
SOFTWARE AND/OR FIRMWARE, are owned by DATADIRECT or its suppliers. All title and intellectual property rights in and to the content which may
be accessed through use of the SOFTWARE AND/OR FIRMWARE is the property of the respective content owner and may be protected by applicable
copyright or other intellectual property laws and treaties. This EULA grants you no rights to use such content. If this SOFTWARE AND/OR FIRMWARE

vi DataDirect Networks S2A 9550 User Guide
Important Information
contains documentation which is provided only in electronic form, you may print one copy of such electronic documentation. You may not copy the
printed materials accompanying the SOFTWARE AND/OR FIRMWARE.
5. Export Law Assurances. You agree and certify that the SOFTWARE AND/OR FIRMWARE will not be transferred or re-exported, directly or
indirectly, into any country where such transfer or export is prohibited by the United States Export Administration Act and regulations thereunder or will
be used for any purpose prohibited by the Act. You also agree that neither the SOFTWARE AND/OR FIRMWARE nor any technical data received from
DATADIRECT, nor the direct product thereof will be exported outside the United States except as authorized in advance by DATADIRECT, in writing, and
as permitted by the laws of the United States.
6. Warranty Disclaimer. EXCEPT AS SPECIFICALLY PROVIDED FOR HEREIN, THE SOFTWARE AND/OR FIRMWARE IS LICENSED TO YOU “AS
IS.” TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, DATADIRECT EXPRESSLY DISCLAIMS ALL OTHER WARRANTIES AND
CONDITIONS, EXPRESS, IMPLIED, OR STATUTORY, INCLUDING THE IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE, SATISFACTORY QUALITY, AND NONINFRINGEMENT, AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY
JURISDICTION.
EXCEPT AS SPECIFICALLY PROVIDED FOR HEREIN, DATADIRECT DOES NOT WARRANT THAT THE FUNCTIONS CONTAINED IN THE
SOFTWARE AND/OR FIRMWARE WILL MEET YOUR REQUIREMENTS, OR THAT THE OPERATION OF THE SOFTWARE AND/OR FIRMWARE WILL
BE UNINTERRUPTED OR ERROR-FREE, OR THAT DEFECTS IN THE SOFTWARE AND/OR FIRMWARE WILL BE CORRECTED. FURTHERMORE,
DATADIRECT DOES NOT WARRANT OR MAKE ANY REPRESENTATIONS REGARDING THE USE OR THE RESULTS OF THE USE OF THE
SOFTWARE AND/OR FIRMWARE IN TERMS OF THEIR CORRECTNESS, ACCURACY, RELIABILITY, OR OTHERWISE. SHOULD THE SOFTWARE
AND/OR FIRMWARE PROVE DEFECTIVE, YOU (AND NOT DATADIRECT, ITS DISTRIBUTORS, DEALERS OR EMPLOYEES) ASSUME THE ENTIRE
COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION. SOME STATES AND JURISDICTIONS DO NOT ALLOW THE EXCLUSION OF
EXPRESS OR IMPLIED WARRANTIES OR CONDITIONS, SO THE ABOVE EXCLUSION MAY NOT APPLY TO YOU. THIS WARRANTY GIVES YOU
SPECIFIC LEGAL RIGHTS. YOU MAY ALSO HAVE OTHER LEGAL RIGHTS WHICH VARY FROM STATE TO STATE AND JURISDICTION TO
JURISDICTION.
7. Limitation of Liability. WHILE EVERY EFFORT IS MADE TO ENSURE THAT THE SOFTWARE AND/OR FIRMWARE IS FREE FROM DEFECT,
UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY, TORT, CONTRACT, NEGLIGENCE OR OTHERWISE, SHALL DATADIRECT OR ITS
DISTRIBUTORS, DEALERS OR EMPLOYEES BE LIABLE TO YOU OR ANY OTHER PERSON FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES OF ANY CHARACTER INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFIT OR GOODWILL,
BUSINESS INTERRUPTION, WORK STOPPAGE, LOSS OF BUSINESS INFORMATION, COMPUTER FAILURE OR MALFUNCTION, OR ANY AND ALL
OTHER COMMERCIAL OR PECUNIARY DAMAGES OR LOSSES OCCASIONED BY THE USE OF OR INABILITY TO USE THE SOFTWARE AND/OR
FIRMWARE PRODUCT TO THE MAXIMUM EXTENT PERMITTED BY LAW. IN NO EVENT WILL DATADIRECT BE LIABLE FOR ANY DAMAGES IN
EXCESS OF DATADIRECT’S LIST PRICE FOR THE SPECIFIC TYPE OF LICENSE PURCHASED FOR THE SOFTWARE AND/OR FIRMWARE, EVEN IF
DATADIRECT SHALL HAVE BEEN INFORMED OF THE POSSIBILITY OF SUCH DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY.
8. Government End Users. If you are a United States government end user, this license of the SOFTWARE AND/OR FIRMWARE conveys only
“RESTRICTED RIGHTS,” and its use, disclosure, and duplication are subjects to DFARS 252.227-7013 or subparagraphs (c)(1) and (2) of the Commercial
Computer software-Restricted Rights at 48 CFR 52.227-19, as applicable. This SOFTWARE AND/OR FIRMWARE was developed at private expense, and no
part of it was developed with government funds. The SOFTWARE AND/OR FIRMWARE is a trade secret of DATADIRECT for all purposes of the Freedom
of Information act, and its “commercial computer software” subject to limited utilization as provided in the contract between DATADIRECT and the
government entity, and in all respects is proprietary data belonging solely to DATADIRECT. Government personnel using the SOFTWARE AND/OR
FIRMWARE, other than under a DOD contract or GSA Schedule, are hereby on notice that the use of this SOFTWARE AND/OR FIRMWARE is subject to
restrictions that are the same as, or similar to, those specified above.
9. General. This license will be construed under the laws of the state of California, except for that body of law dealing with conflicts of laws, if obtained
in the United States, or the laws of jurisdiction where obtained if obtained outside the United States. If any provision of this license is held by a court of
competent jurisdiction to be contrary to law, that provision will be enforced to the maximum extent permissible, and the remaining provisions of this
license will remain in full force and effect.
10. Complete Agreement. This EULA constitutes the entire agreement between the parties with respect to the use of the SOFTWARE AND/OR
FIRMWARE, and supersedes all prior or contemporaneous understandings or agreements, written or oral, regarding such subject matter.

Table of Contents
DataDirect Networks S2A9550 User Guide
1
Table of Contents
About this Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1.1 DataDirect Networks’ SAN Solution . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1.2 The S2A9550 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1.3 Features of the S2A9550 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 The S2A9550 System Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2.1 Power Supply and Fan Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2.2 I/O Connectors and Status LED Indicators . . . . . . . . . . . . . . . . . . . . . . 7
1.2.3 Host and Disk Connectivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.2.4 Uninterruptible Power Supplies (UPS) . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1 Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2 Setting Up the S2A9550. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2.1 Unpacking the S2A9550 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2.2 Rack-Mounting the S2A9550 Chassis. . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2.3 Connecting the S2A9550s in Dual Mode . . . . . . . . . . . . . . . . . . . . . . . 14
2.2.4 Connecting the S2A9550 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.2.5 Selecting AL_PA for Your Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.2.6 Laying Out your Storage Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.2.7 Connecting the RS-232 Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.2.7.1 Basic Key Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.2.8 Powering On the S2A9550 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.3 Configuring the S2A9550 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.3.1 Setup Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.3.2 Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.3.3 Accessing the Administrative Utility . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.3.4 Login as Administrator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.3.5 Setting System Time & Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.3.6 Setting Tier Mapping Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.3.7 Verifying Connections for SF6016 Enclosures . . . . . . . . . . . . . . . . . . 22
2.3.8 Checking Tier Status and Configuration . . . . . . . . . . . . . . . . . . . . . . . 22
2.3.9 Cache Coherency and Labeling in Dual Mode . . . . . . . . . . . . . . . . . . 24
2.3.10 Configuring the Storage Arrays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.3.11 Setting Security Levels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
2.3.11.1 User Authentication (Recommended for SAN Environment). . . . 27
2.3.11.2 Host Port Zoning (Anonymous Access) . . . . . . . . . . . . . . . . . . . . . . . . 29
3.1 Managing the S2A9550 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.1.1 Management Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.1.2 Available Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.1.3 Administrator and User Logins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.1.3.1 Login . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.1.3.2 Logout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.1.3.3 Password. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.1.3.4 Who Am I. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.2 Configuration Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
3.2.1 Configure and Monitor Status of Host Ports. . . . . . . . . . . . . . . . . . . . 35
3.2.1.1 Host ID. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

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3.2.1.2 Host WWN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
3.2.1.3 Host Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
3.2.1.4 Host LILP Payload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
3.2.1.5 Host Array Parity Checking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
3.2.1.6 Host Port Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
3.2.2 Configure and Monitor Status of Storage Assets . . . . . . . . . . . . . . . . 36
3.2.2.1 Disk and Channel Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
3.2.2.2 Tier View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
3.2.2.3 LUN View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
3.2.2.4 Adding/Removing Storage Assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
3.2.2.5 Status of Drive Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
3.2.2.6 Display Information of SES Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
3.2.2.7 Visual Indication of Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
3.2.2.8 Visual Indication of Tier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
3.2.2.9 Visual Indication of Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
3.2.2.10 Visual Indication of LUN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
3.2.2.11 Verify Connections to Drive Enclosures . . . . . . . . . . . . . . . . . . . . . . . 42
3.2.3 Tier Mapping for Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
3.2.4 System Network Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
3.2.4.1 Telnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
3.2.4.2 SNMP & Syslog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
3.2.4.3 API Server Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
3.2.4.4 Displaying and Editing the Routing Table . . . . . . . . . . . . . . . . . . . . . . 45
3.2.5 Restarting the S2A9550 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
3.2.5.1 System Restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
3.2.5.2 System Shutdown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
3.2.6 Setting the System’s Date and Time. . . . . . . . . . . . . . . . . . . . . . . . . . . 47
3.2.7 Saving the S2A9550’s Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 47
3.2.8 Restoring the System’s Default Configuration . . . . . . . . . . . . . . . . . . 47
3.2.9 LUN Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
3.2.9.1 Configuring the Storage Array . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
3.2.9.2 Creating a LUN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
3.2.9.3 Formatting a LUN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
3.2.9.4 Interrupting a LUN Format Operation . . . . . . . . . . . . . . . . . . . . . . . . . 49
3.2.9.5 Changing a LUN Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
3.2.9.6 Moving a LUN (Dual Mode Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
3.2.9.7 Deleting a LUN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
3.2.9.8 SCSI Reservations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
3.2.10 Automatic Drive Rebuild . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
3.2.10.1 Manual Drive Rebuild . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
3.2.10.2 Drive Rebuild Verify . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
3.2.10.3 Manual Drive Replace. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
3.2.10.4 Interrupting a Rebuild Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
3.2.11 Couplet S2A9550 Configuration (Cache/Non-Cache Coherent). . . . 51
3.2.11.1 Non-Cache Coherent. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
3.2.11.2 Cache Coherent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
3.2.11.3 Fail / Restore the Other S2A 9550 Unit in the Couplet Pair . . . . . . 52
3.2.11.4 Labeling the S2A9550 Unit(s). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
3.2.11.5 Singlet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
3.3 Performance Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
3.3.1 Optimization of I/O Request Patterns . . . . . . . . . . . . . . . . . . . . . . . . . 54
3.3.1.1 Display Current Cache Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
3.3.1.2 Cache Segment Size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
3.3.1.3 Writeback Cache Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
3.3.1.4 Prefetch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

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3.3.1.5 Cache Settings Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
3.3.1.6 Disk Configuration Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
3.3.2 Audio/Visual Settings of the System . . . . . . . . . . . . . . . . . . . . . . . . . . 56
3.3.3 Locking LUN in Cache . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
3.3.3.1 Locking / Unlocking a LUN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
3.3.4 System Performance Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
3.3.5 Resources Allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
3.3.5.1 Background Format/Rebuild Operations . . . . . . . . . . . . . . . . . . . . . . . 63
3.3.5.2 Background LUN Verify Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
3.3.5.3 SES Device Monitoring Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
3.3.5.4 Host Command Timeout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
3.4 Security Administration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
3.4.1 Monitoring User Logins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
3.4.2 Zoning (Anonymous Access) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
3.4.3 User Authentication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
3.5 Firmware Update Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
3.5.1 Displaying Current Firmware Version . . . . . . . . . . . . . . . . . . . . . . . . . 68
3.5.2 Firmware Update Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
3.6 Remote Login Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
3.6.1 When a Telnet Session is Active . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
3.7 The System Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
3.7.1 Message Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
3.7.2 System and Drive Enclosure Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
3.7.3 Displaying System’s Uptime . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
3.7.4 Saving a Comment to the Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
3.8 Other Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
3.8.1 APC UPS SNMP Trap Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
3.8.2 API Server Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
3.8.3 Internal Mirrored Groups (IMG). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
3.8.4 Changing Baud Rate for CLI Interface. . . . . . . . . . . . . . . . . . . . . . . . . 75
3.8.5 CLI/Telnet Session Control Settings . . . . . . . . . . . . . . . . . . . . . . . . . . 76
3.9 Remote Management of S2A9550 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
3.9.1 Network Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
3.9.2 Network Interface Set Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
3.9.3 Login Names and Passwords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
3.9.4 SNMP Set Up on Host Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
3.9.4.1 S2A9550 Implementation of SNMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
4.1 Maintaining the S2A9550 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
4.1.1 Component Failure Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
4.1.1.1 Power Supply Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
4.1.1.2 Fan Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
4.1.2 Recovering from Drive Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
4.1.2.1 Single Drive Failures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
4.1.2.2 Multiple Drive Failures and Channel Failures . . . . . . . . . . . . . . . . . . 86
4.1.3 Component Failure on Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
4.1.4 Error Correction (Bad Block Management) . . . . . . . . . . . . . . . . . . . . 88
4.2 S2A9550 Messages and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
4.2.1 Fault Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

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4.2.2 Warning Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
4.2.3 Timeout Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
4.2.4 Informational Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
4.2.5 SDRAM and Cache Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
4.2.6 Disk Boot-up Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
4.2.7 Disk Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
4.2.8 Host Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
4.2.9 Rebuild Error Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
4.2.10 SES (SCSI Enclosure Services) Messages. . . . . . . . . . . . . . . . . . . . . 100
4.2.11 Other Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

About this Guide
DataDirect Networks S2A9550 User Guide
5
About this Guide
The manual structure is outlined below:
Section 1: Introducing the S2A9550
This section provides information on features and functions of the Silicon Storage
Appliance (S2A)9550. Topics covered in this section include:
• Section 1.1: Introduction. This section describes the features of the S2A9550.
• Section 1.2: The S2A9550 System Hardware. This section describes the components of the
S2A9550.
Section 2: Installing the S2A9550
This section contains information regarding installation of the S2A. Procedures described in
this section of the manual should only be performed by DataDirect Networks trained personnel.
Topics covered in this section include:
• Section 2.1: Installation Overview. This section provides an overview of the S2A9550
installation.
• Section 2.2: Setting Up the S2A9550. This section provides information regarding
hardware installation of your S2A9550.
• Section 2.3: Configuring the S2A9550. This section explains how to configure your
S2A9550 using the Administrative Utility via a RS-232 terminal or Telnet.
Section 3: Using the S2A9550 Management & Administrative Facilities
Topics covered in this section include:
• Sections 3.1 to 3.8: These sections provide descriptions of the S2A9550’s comprehensive
management capability.
• Section 3.9: Remote Management of S2A9550. This section explains how to set up the
Telnet and SNMP functions on the S2A9550 for remote monitoring and configuration.
Section 4: Supporting the S2A9550
This section contains error recovery and system support information. Topics covered in this
section include:
• Section 4.1: Maintaining the S2A9550. This section provides information regarding error
recovery. It explains the procedures for how to recover from component failures and
drive failures on the S2A9550.
• Section 4.2: S2A9550 Messages and Descriptions. This section provides descriptions of
the S2A9550 messages.
Section 5: Appendices
• Appendix A: Technical Specifications. This appendix provides technical specifications
for the S2A9550.
• Appendix B: Safety Guidelines for Rack Installation. This appendix provides the safety
guidelines that should be followed when installing the S2A9550 in a rack.

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SECTION 1
Introducing the
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Introducing the S2A9550
DataDirect Networks S2A9550 User Guide
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1.1 Introduction
Welcome to the DataDirect Networks Silicon Storage Appliance™S2A9550.
1.1.1 DataDirect Networks’ SAN Solution
The Silicon Storage Appliance (S2A9550 ) is an intelligent network infrastructure device designed and
optimized for the high bandwidth and capacity requirements of departments, rich media and high
performance workgroup applications.
The S2A9550 plugs seamlessly into existing network environments, thereby protecting and upgrading
investments made in legacy storage and networking products to substantially improve their performance,
availability and manageability.
The S2A9550 is designed based on DataDirect’s advanced pipelined, parallel processing architecture,
caching, directRAID, ASIC (Application Specific Integrated Circuits), system and file management
technologies. DataDirect has integrated these technologies into a single plug and play device—the S2A9550—
providing simple, centralized and secure data and network management.
1.1.2 The S2A9550
The S2A9550 is designed specifically to support high bandwidth, shared access to and backup of large banks
of data, and rich content. It enables a multi-vendor environment comprised of standalone and clustered
servers, workstations and PCs to access and back up data stored in centralized or distributed storage devices
in an easy, cost effective and reliable manner.
Using zero-latency High Parallel Port Technology (HPPT™), each S2A9550 orchestrates a coherent flow of
data throughout the SAN, from users to storage, managing data at up to 1600MB/second (400MB/s per port).
This task is accomplished through virtualized host and storage connections, a DMA-speed shared data access
space, advanced network-optimized directRAID™data protection and security—all acting in harmony with
sophisticated Fibre Channel storage management intelligence embedded within the S2A9550.
With its modular design, the S2A9550 can be “coupled” together forming data access redundancy while
maintaining fully pipelined, parallel bandwidth to the same disk storage. This modular architecture ensures
high data availability and uptime along with application performance. The system provides full bandwidth to
all host ports simultaneously, without host striping with its PowerLUN™technology.
1.1.3 Features of the S2A9550
The S2A9550 incorporates the following features:
•Simplifies Deployment of Complex SANs
The S2A9550 provides SAN administration with the management tools required for large number of
clients and complex Fibre Channel configuration through its topology-independent FC-user
management features.
•Fibre Channel Connectivity with 800MB/s Throughput
The S2A9550 provides up to 4 individual 400MB/s Fibre Channel host port connections, including
simultaneous access to the same data through multiple ports. Each FC host port supports Class 3, point-
to-point, FC-AL, and switched fabric operation.

4 DataDirect Networks S2A9550 User Guide
Introducing the S2A9500
•High-Parallel Port Technology Implementation
HPPT architecture provides system performance and fault-tolerance.
- 10-independent dual-ported FC drive channels; including separate (asynchronous, “self-optimized”)
I/O queues for each channel
- 10-independent directRAID engines
- 10-independent RAID-protected high speed data caches
•Highly Scalable Performance and Capacity
The directRAID engine provides both fault-tolerance and capacity scalability. Performance will remain
the same even in degraded mode. Internal data striping provides generic load balancing across drives.
Formattable capacity can be scaled from 584GB to 730TB (336TB, 300GB drives with SFx016 enclosures
and 448TB, 400GB drives with SAx016 enclosures).
•Comprehensive, Centralized Management Capability
The S2A9550 provides a wide range of management capabilities: Configuration Management,
Performance Management, LUN Management, Security Administration, and Firmware Update
Management.
•Management Options via RS-232 and Ethernet (Telnet)
A RS-232 port and Ethernet port are included to provide local and remote management capabilities.
SNMP and GUI are also supported.
•Data Security with Dual-Level Protection
Non-host based data security is maintained with scalable security features including restricted
management access, dual-level protection and authentication against authorized listing (up to 512 direct
host logins are supported). No security software is required on the host computers.
•Storage Virtualization and Pooling
Storage pooling enables different types of storage to be aggregated into a single logical storage resource
from which virtual volumes can be served up to multi-vendor host computers. Up to 128 LUNs are
supported. Each LUN can be subdivided into up to 64 smaller equally-sized LUN segments, giving a total
of 8192 LUN segments. The LUN segments of a LUN are managed together and share the same
characteristics.
•SES (SCSI Enclosure Services) Support for Enclosure Monitoring
Status information on the condition of enclosure, disk drives, power supplies, and cooling systems are
obtained via the SES interface.
•Absolute Data Integrity and Availability
Automatic drive failure recovery procedures are transparent to users. Up to 125 hot spares are
supported.
•Hot-Swappable and Redundant Components
The S2A9550 utilizes redundant, hot-swappable power supplies and cooling modules that can be
replaced while the system is running.

Introduction
DataDirect Networks S2A9550 User Guide 5
1.2 The S2A9550 System Hardware
This section describes the hardware components of the S2A9550.
The basic S2A9550 (Figure 1-1) includes:
• A single unit (with a minimum of 2.56GB cache memory)
• Ten SFP (Small Form-factor Pluggable) cables which connect the S2A9550 to the FC
drive enclosures (Refer to Cabling & Switching Information for S2A8500 &
S2A9550 and Drive Enclosures 96-00164-001)
• Cable(s) for host Fibre Channel connection(s)
• Serial cable for maintenance/diagnostics
• Ethernet cable
The S2A9550 is a 2U, 19-inch rack-mountable chassis that houses four (4) power supply
modules, one (1) fan module (which contains two fans), and the internal electronics—a
motherboard containing all of the drive-side, caching, and command processor functions,
and a daughterboard containing the host connectivity electronics.
The system uses ten (10) independent FC drive channels to manage data distribution and
storage for up to 125 disk drives per channel (could be limited by drive enclosure type).
Figure 1-1 The S2A9550 4FC Front and Rear Views
Rear of S2A9550
Front of S2A9550 Behind Cover Panel

Introduction
6DataDirect Networks S2A9550 User Guide
1.2.1 Power Supply and Fan Modules
Each S2A9550 is equipped with four (4) Power Supply/Cooling modules and one (1) fan
module (Figure 1-3). The PSU (power supply unit) voltage operating ranges are nominally
110V or 230V AC, selected automatically.
The four Power Supply/Cooling modules provide redundant power supply and cooling
system for the unit. If one module fails, the other will maintain the power supply and
cooling while you replace the faulty module. The faulty module will still be providing
proper air flow for the system so do not remove it until a new module is available for
replacement.
The four modules are installed in the left and right slots at the front of the unit, behind the
cover panel (Figure 1-1). Each PSU module is held in place by two thumbscrews.
The fan module (Figure 1-3) is installed in the front center slot, behind the cover panel, and
is held in place by two thumbscrews.
The LED mounted on the front of the Power Supply/Cooling module indicates the status
of the PSU and the fans (Figure 1-2). It is green when the module is operating normally and
turns red when a fault occurs. (Note: See Status LEDs on rear panel for clarification.)
Figure 1-2 Power Supply/Cooling Module
Status LED
Power Switch
Figure 1-3 Fan Module

Introduction
DataDirect Networks S2A9550 User Guide 7
1.2.2 I/O Connectors and Status LED Indicators
Figure 1-4 shows the position of the I/O connectors at the back of the S2A9550 4FC unit.
The four HOST ports (SFP connectors) are used for Fibre Channel host connections.
You may connect your host systems directly to these ports or connect the ports to your
Fibre Channel switches and hubs. When an FC signal is present on the port (4G), the
respective LED turns solid green. Blinking green LEDs indicate activity A solid amber
LEN indicates failure(1G or 2G). A blinking amber LED indicates activity (1G or 2G).
There is no solid RED LED status. A slow blink RED LED indicates no connection.
The DISK ports (SFP connectors) are for disk connections. The ten ports are labeled by
data channels (ABCDEFGHPS). They are also color-coded to facilitate easy installation.
When an FC signal is present on the port, the respective LED turns green. Blinking LEDs
indicate activity.
The CLI connector provides local system monitoring and configuration capabilities and
uses a standard DB-9 Null Modem female-to-male cable.
The TELNETconnector provides remote monitoring and configuration capabilities. The
ACT (Activity) LED flashes green when there is Telnet activity. The LINK LED is off
when there is no Ethernet link. The SPEED LED turns amber when the link speed is
100MB/s, turns green when the link speed is 1000MB/s, and is off when the link speed
is 10 MB/s.
The S2A LINK port is used to connect single S2A9550 units to form a couplet via a
cross-over Ethernet cable. The ACT (Activity) LED flashes green when there is Telnet
activity. The LINK LED is off when there is no Ethernet link. The SPEED LED turns
amber when the link speed is 100MB/s, turns green when the link speed is 1000MB/s,
and is off when the link speed is 10 MB/s.
The S2A COM port is a RS-232 Interface that uses an RJ-45 cable.
The A/B switch allows the user to configure the units as Unit A or Unit B. Each unit has
an activity LED. It is green for the selected unit
Figure 1-5 shows the LEDs at the back of the S2A9550 4FC unit.
The SYSTEM STATUS LED is green when the entire storage system is operating
normally.
Figure 1-4 I/O Ports on Rear Panel of the S2A9550
Host 1
Host 2
Host 3
Host 4
Disk Ports
A C E G P
BDFHS
Telnet
S2A Link
RS-232 Interface
S2A COM
Unit 1/Unit 2

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8DataDirect Networks S2A9550 User Guide
The CONTROLLER STATUS LED is green when S2A9550 is operating normally. It
turns amber when shutting down.
The DISK STATUSLED is green when disk enclosure is operating normally and it turns
amber when there is a problem.
The AC STATUSLED is green indicating normal operating status (if all power supplies
indicate Power Good). If two (2) supplies from the same AC cord both indicate power
bad, the AC has failed and LED glows red. (Note: Check LEDs on front of unit.)
The DC STATUS LED is green indicating normal operating status. It glows amber if
there is a non-critical power Supply DC fault; (that is, one of the supplies is not installed
or is not indicating Power Good). It glows red if an On-board supply fails or if there is a
critical supply fault. (Note: Check LEDs on front of unit.)
The FAN STATUS LED is green when fans are operating normally. A blinking LED
indicates system monitoring activity such that the monitoring is being updated. It glows
amber if one of the two fans in the fan module fails. It glows red if both fans fail or if the
fan module is removed.
1.2.3 Host and Disk Connectivity
The S2A9550 includes four (4) 4Gb/s full duplex Fibre Channel host ports. The host ports
are hard-wired for non-OFC optical connections utilizing SFP (Small Form-factor
Pluggable) connectors.
The disk ports utilize ten standard copper SFP connectors.
1.2.4 Uninterruptible Power Supplies (UPS)
The use of a UPS with the S2A9550 is highly recommended to guarantee power to the
system in the event of a power failure. DataDirect Networks offers two types of UPS:
Basic and Redundant. The basic UPS (UPS-SDD) is rack-mountable. It can maintain
power to a 5-enclosure system for 7 minutes while the system safely shuts down during
a power failure. The redundant UPS (UPS-SDDHA) contains redundant power cells,
providing a redundant UPS solution for the system.
The UPS should be installed by a licensed electrician. Please contact DataDirect
Networks to obtain circuit and power requirements.
Figure 1-5 LED Status Indicators Rear Panel of the S2A9550