Accusys ExaSAN A12S2-PS User manual

ExaSAN A12S2-PS
User Guide
Support Host Bus Adapter:
PCIe 2.0: Z1M-G2
Support Host Convertor:
Thunderbolt2.0 to PCIe2.0: C1M-G2
Support Switch System:
PCIe 2.0: SW08-Q4, SW16, SWF16
Accusys Storage Ltd.,
Version: V1.8

Revision Sheet
User Guide Page i
Revision Sheet
Release
No.
Date
Revision Description
V1.0
07/30/2011
Initial release on CD.
V1.1
08/13/2012
Modify some wording and contents
V1.2
09/13/2012
Add a half-high bracket picture in the packing list and
modify the wording on the section 1.3.2
V1.3
12/19/2012
Modify page1-14, item 6 PCIe port expansion.
Modify page 4-3(erase clear log explanation and add
DAS and SAN log file path)
V1.4
02/04/2013
Modify page1-8, add the power convertor to the
packing list and accessory list
Modify page1-12, the LED status of HDD tray when the
HDD is expanded or migrated into an existed array.
Modify page 3-3, the figure for installing HBA onto a
PCIe x 16 slot.
V1.5
02/26/2013
Delete page 1-4, 1-7 5m copper cable
V1.6
01/03/2014
Add safety caution section on last page of the User
Guide
V1.7
09/22/2014
Modify item 3.3.4.2 Installing RAIDGuardX Installationdriver
on Linux and
V1.8
14/10/2014
Add C1M-G2,
Add chapter plan you SAN
Replace ACS-62300 by Z1M-G2

User Guide Page ii
PREFACE
Notice
The product features and specifications described in this guide are subject to change
without notice.
The manufacturer shall not be liable for any damage, or the loss of information resulting
from the performance or use of the information contained herein.
About This Guide
Congratulations on your purchase of the ExaSAN (pronounced X-sa-SAN) A12S2-PS, a
revolutionary high bandwidth streaming rack mounted storage system, specifically
designed for all high-end post production storage. It delivers stability, exceptional
performance, and scalable capacity at a very affordable ownership cost and requires
only a low maintenance budget.
This guide contains instructions for installing and using the ExaSAN A12S2-PS system and
RAID (Redundant Array of Independent Disks) technologies and RAIDGuard X
(ExaSAN’s RAID management software).
If you are new to RAID and RAIDGuard X, this guide will help you become familiar with
these technologies, and assist you in setting up and using RAID on the A12S2-PS. If you
are already familiar with these technologies, use this guide as a reference for
implementing your ExaSAN A12S2-PS RAID solution to achieve maximum performance
and reliability.
For details of hardware installation, setup, configuration and considerations, see
Chapter 1, “Introducing ExaSAN PCIe2.0 Storage System”
Chapter 2, “Preparing to Install ExaSAN A12S2-PS”
Chapter 3, “Installing ExaSAN A12S2-PS”
Chapter 4, “Using RAIDGuard X”
Chapter 5, RAID Overview
Guide to Conventions
Important information that users should be aware of is indicated with the following icons:
Caution
This icon indicates the existence of a potential hazard that could
result in personal injury, damage to your equipment or loss of
data if the safety instruction is not observed.

User Guide Page iii
Note
This icon indicates useful tips on getting the most from your
Accusys RAID system.
Trademarks
Accusys and the names of Accusys products and logos referenced herein are
trademarks and/or service marks or registered trademarks and/or service marks of
Accusys, Inc.
Xsan, Mac, Mac OS, and Macintosh are either registered trademarks or trademarks of
Apple. Other product and company names mentioned herein may be trademarks
and/or service marks of their respective owners.
All contents of this manual are copyrighted by Accusys, Inc.
The information contained herein is the exclusive property of Accusys, Inc. and shall not
be copied, transferred, photocopied, translated on paper, film, electronic media, or
computer-readable form, or otherwise reproduced in any way, without the express
written permission of Accusys Inc.
Document version 1.0
Date Published: November, 2011
© Copyright 2011 Accusys, Inc.
All Rights Reserved.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may
cause undesired operation.

User Guide Page iv
ExaSAN A12S2-PS User Guide
TABLE OF CONTENTS
Page #
Notice ............................................................................................................................................................ii
About This Guide ........................................................................................................................................ii
Guide to Conventions ...............................................................................................................................ii
Trademarks .................................................................................................................................................iii
1. Introducing ExaSAN PCIe 2.0 Storage System .....................................................................1-1
1.1 System Overview.................................................................................................................1-1
1.1.1 What is the ExaSAN Solution .......................................................................................................1-1
1.1.2 What is the ExaSAN A12S2-PS Solution .....................................................................................1-2
1.1.3 ExaSAN A12S2-PS Components and Accessories.................................................................1-3
1.1.3.1 ExaSAN PCIe RAID Disk System.........................................................................................1-3
1.1.3.2 Hard Disk Drive (HDD) for the RAID System ...................................................................1-3
1.1.3.3 ExaSAN QSFP Host Bus Adapter (Z1M-G2).....................................................................1-3
1.1.3.4 QSFP (Quad Small Form-factor Pluggable) PCIe Copper or Optical Cables .....1-4
1.1.3.5 Power Cord & Power convertors .....................................................................................1-5
1.1.3.6 Rail and Rail Extender .........................................................................................................1-5
1.1.4 Key Features....................................................................................................................................1-5
1.2 Unpacking the System.......................................................................................................1-7
1.2.1 What Is In Your Order ....................................................................................................................1-7
1.2.2 Checking the Equipment You’ll Need.....................................................................................1-7
1.2.3 Unpacking .......................................................................................................................................1-7
1.3 What’s in the Box .................................................................................................................1-8
1.3.1 The ExaSAN RAID ...........................................................................................................................1-8
1.3.2 ExaSAN Accessories ......................................................................................................................1-9
1.3.3 Disk Tray package .........................................................................................................................1-9
1.4 SAS JBOD Expansion...........................................................................................................1-9
1.5 Your A12S2-PS at a Glance ..............................................................................................1-9
1.5.1 ExaSAN A12S2-PS ...........................................................................................................................1-9
1.5.1.1 A12S2-PS Front Panel ...........................................................................................................1-9
1.5.1.2 Beeper Codes .....................................................................................................................1-11
1.5.1.3 Disk Mapping.......................................................................................................................1-12
1.5.1.4 Disk Tray.................................................................................................................................1-12
1.5.1.5 A12S2-PS Rear Panel..........................................................................................................1-13
1.5.1.6 A12S2-PS SAS JBOD Rear Panel ......................................................................................1-15
1.5.1.7 How to Connect Multiple JBOD .....................................................................................1-17
1.5.2 ExaSAN QSFP Host Bus Adapter (HBA)...................................................................................1-18
2. Preparing to Install ExaSAN A12S2-PS ....................................................................................2-1
2.1 Precaution for Handling the System...............................................................................2-1
2.2 Choosing the Location for the System...........................................................................2-1
2.3 Electrical Power ...................................................................................................................2-1

User Guide Page v
2.4 Operating Environment......................................................................................................2-2
2.5 Security...................................................................................................................................2-2
3. Installing the ExaSAN A12S2-PS................................................................................................3-1
3.1 Installing the System ...........................................................................................................3-1
3.1.1 Installing Disk Drives .......................................................................................................................3-1
3.1.2 Installing the HBA Card ................................................................................................................3-2
3.1.3 Connecting the HBA to the A12S2-PS System........................................................................3-4
3.1.4 Installing the rail on A12S2-PS System .......................................................................................3-5
3.2 Powering the System On and Off....................................................................................3-7
3.2.1 Powering On ...................................................................................................................................3-7
3.2.2 Powering Off ...................................................................................................................................3-7
3.3 Install driver and GUI............................................................................................................3-8
3.3.1 Installing ExaSAN driver and GUI RAIDGuardX .............................................................................3-8
3.3.1.1 Installing driver and GUI on MAC and Windows ....................................................................3-8
3.3.1.2 Installing driver and GUI on Linux...........................................................................................3-9
3.3.2 Confirm the ExaSAN RAID system driver on OS............................................................................3-13
3.3.2.1 Confirming the ExaSAN RAID system driver on Mac...........................................................3-13
3.3.2.2 Confirming the ExaSAN RAID system driver in Windows....................................................3-14
3.3.3 Confirm LEDs on HBA....................................................................................................................3-14
3.4 Create Array.........................................................................................................................3-15
3.4.1 Check on new Volume in Disk Utility of MacOS ............................................................................3-15
3.4.2 Check on new volume in Disk Management of Windows................................................................3-15
3.4.3 Check on new volume by fdisk command on Linux.........................................................................3-15
4. Using RAIDGuardX GUI ...............................................................................................................4-1
4.1 RAIDGuardX Overview ......................................................................................................4-1
4.1.1 RAIDGuardX at a Glance ...........................................................................................................4-2
4.1.1.1 Menu Bar ................................................................................................................................4-2
4.1.1.2 RAIDGuard X main console ..............................................................................................4-3
4.1.2 Adding Controller ..........................................................................................................................4-4
(1) DAS –add controller locally...........................................................................................................4-4
(2) SAN –add controller remotely ......................................................................................................4-5
4.1.3 Planning your RAID........................................................................................................................4-5
4.1.4 Creating an Array..........................................................................................................................4-7
4.1.5 Email Notification.........................................................................................................................4-11
4.1.6 Preference.....................................................................................................................................4-12
4.1.6.1 Disk Lag Proof Mode .........................................................................................................4-12
4.1.6.2 NCQ .......................................................................................................................................4-13
4.1.6.3 SMART Mode .......................................................................................................................4-13
4.1.6.4 Beeper...................................................................................................................................4-14
4.1.6.5 Equalization Mode.............................................................................................................4-14
4.1.6.6 Cache ...................................................................................................................................4-15
4.1.6.7 MISC.......................................................................................................................................4-16
4.1.7 Option.............................................................................................................................................4-17
4.1.7.1 Slicing.....................................................................................................................................4-17
4.1.7.2 LUN Map ...............................................................................................................................4-20
4.1.7.3 Expansion .............................................................................................................................4-21
4.1.7.4 Migrations.............................................................................................................................4-23
4.1.7.5 Snapshot...............................................................................................................................4-25

User Guide Page vi
4.1.7.6 Health Center......................................................................................................................4-28
4.1.7.7 Unlock Drives .......................................................................................................................4-29
4.1.8 Updating the ExaSAN RAID system Firmware ......................................................................4-31
4.1.8.1 Preparing the Firmware Update Files............................................................................4-31
4.1.8.2 Installing the Firmware Update Files..............................................................................4-31
5. RAID Overview ..............................................................................................................................5-1
5.1 How RAID Works...................................................................................................................5-1
5.2 Data Storage Methods .......................................................................................................5-1
5.2.1 Data Striping ...................................................................................................................................5-1
5.2.2 Data Mirroring.................................................................................................................................5-1
5.2.3 Data Parity.......................................................................................................................................5-2
5.3 RAID Levels............................................................................................................................5-2
5.3.1 RAID 0: Striping................................................................................................................................5-2
5.3.2 RAID 1: Mirroring .............................................................................................................................5-2
5.3.3 RAID 5: Independent data disks with distributed parity......................................................5-2
5.3.4 RAID 6: Independent data disks with two Independent parity schemes ......................5-2
5.3.5 RAID 0+1: Striped set with Mirroring ..........................................................................................5-3

1. Introduction
User Guide
1. Introducing ExaSAN PCIe 2.0 Storage System

1. Introduction
User Guide Page 1-1
1. Introducing ExaSAN PCIe 2.0 Storage System
1.1 System Overview
Your new ExaSAN (pronounced “X-sa-SAN”) PCIe 2.0 Storage System is a rack mounted
storage that can be used as a DAS (Direct-Attached Storage) or SAN (Storage Area
Network) for the post production and broadcasting industries that require high
bandwidth. Furthermore, the A12S2-PS supports the latest PCIe 2.0 standard providing a
20Gb bandwidth.
1.1.1 What is the ExaSAN Solution
Developed by Accusys, Inc., a worldwide leader in RAID (Redundant Array of
Independent Disks) storage systems, ExaSAN is a system solution built for simple, cost-
effective deployment and storage management. Employing PCIe (PCI Express)
technology, the PCIe 2.0 Storage System uses QSFP cabling technology to natively
transmit at low latency PCI Express Gen 2 protocol. Each channel under PCIe 2.0 can
transmit at 500MB/s, giving PCIe 2.0 x4 storage systems a 20Gb bandwidth and PCIe
2.0x8 a 40 Gb bandwidth. The ExaSAN total solution, including its complete line up of
rack mount system, tower systems, PCIe switch systems and accessories, puts the
benefits of shared, scalable, and high-performance storage within easy reach of
organizations with limited IT resources and budgets.
Post production work such as non-linear editing (NLE) requires especially high
bandwidth storage to support the volume of data being processed, and ExaSAN
storage solution is designed to meet such demands. The high bandwidth enabled by
ExaSAN technology allows the client to achieve the maximum efficiency with minimum
cost, while its enhanced functionality provides continuous and smooth data transfer to
prevent frame drop or lagging of projected content. ExaSAN is a complete solution that
includes the PCIe RAID system, cable and HBA card.
Figure 1 below depicts the ExaSAN A12S2-PS system solution architecture. Note that it
can be expanded from one RAID system to three systems (daisy-chaining from 1x RAID
controller).

1. Introduction
User Guide Page 1-2
Figure 1
Whether it’s collaborative video editing in a post-production workgroup, or a shared
research project in a university, the ExaSAN solution offers a range of performance
levels and storage capacities that scale to meet the needs of small-to-medium-sized
organizations. Equally important is its integrated design, centralized administration and
monitoring, and a suite of built-in management tools; which eliminate the need for a
staff of experts to install and maintain a SAN for the workgroups.
Figure 2 below depicts a standard ExaSAN system solution architecture.
Figure 2
1.1.2 What is the ExaSAN A12S2-PS Solution
The ExaSAN A12S2-PS is a 2U12Bay disk array system designed for all high-end post
production storage usage, with the latest interface technology PCIe 2.0 and innovative
green design, supports RAID level 0, 1, 5, 6, 0+1, high speed 6Gb SAS drives, and high
capacity SATA II drives. The Single port RAID controller of A12S2-PS combined with 12
drives can provide 20Gb bandwidth with its unique Performance Optimization feature.
Your ExaSAN A12S2-PS system consists of the standard components listed below in this
section. Note that items 1 through 5 are Accusys-supplied equipment as part of the

1. Introduction
User Guide Page 1-3
A12S2-PS package. The host server and HDD in a DAS/SAN environment are not
Accusys-supplied equipment and are therefore not included in the package. Contact
your System Integrator/Value Added Reseller if you need assistance in purchasing these
components.
1. ExaSAN A12S2-PS PCIe RAID storage system, see Section 1.1.3.1 and 1.1.3.2
2. QSFP-PCIe 2.0 Host Bus Adapter, compatible with PCIe 2.0 and 1.1 slots on the host
server, see Section 1.1.3.3
3. QSFP 2M copper for connecting the host and HBA, optical and variety length is
optional, see Section 1.1.3.4
4. 2 AC Power cords, see Section 1.1.3.5
5. Rail and rail extender for mounting the A12S2-PS on a rack, see Section 1.1.3.6.
1.1.3 ExaSAN A12S2-PS Components and Accessories
This section provides detailed description of each system component and accessory.
1.1.3.1 ExaSAN PCIe RAID Disk System
The A12S2-PS is a 2U rack mounted RAID system supporting up to 12 hot swappable
hard drives (sold separately).
Also note that the RAID disk system comes with a chassis, RAID controller, and disk trays
only. The hard disk drives (HDDs) are not included. See Section 1.1.3.2 for considerations
concerning HDDs.
Further note that a QSFP Host Bus Adapter is packaged with the PCIe RAID system. In a
DAS (Direct Attached Storage)/SAN (Storage Area Network) configuration, this card is
to be installed in the host system to provide the PCIe interface with the RAID system.
1.1.3.2 Hard Disk Drive (HDD) for the RAID System
This component is ordered separately from a third-party vendor. The quantities depend
on the number and model of RAID systems you have. Consult your RAID system User
Guide for additional information.
Hard disk drives come in different storage capacities performance levels. However, be
aware that all hard drives in a RAID system should match in size and speed.
Furthermore, all hard drives in an array should be of identical model with the same
firmware version.
Accusys recommends the SAS and SATA Enterprise HDDs for your RAID disk systems.
1.1.3.3 ExaSAN QSFP Host Bus Adapter (Z1M-G2)
Make sure that each client system in your workgroup has an available PCIe x4, x8, or
x16 slot. Note that the PCIe slots on some motherboards are for graphics cards only.
Check your motherboard documentation or verify with the motherboard vendor for
compatibility with the Accusys-supplied HBA. Also note that some PCIe x4 or x8 slots only

1. Introduction
User Guide Page 1-4
share or run at PCIe x1 speed. You are advised to consult your motherboard
documentation to verify the real speed of the available PCIe slot.
1.1.3.4 QSFP (Quad Small Form-factor Pluggable) PCIe Copper
or Optical Cables
A 2m QSFP Copper Cable is included in your Accusys RAID disk system package. It is
used to connect the host systems to the storage system. Use the copper cable for
distances up to 5 meters. Optional QSFP cables are available at varying lengths.
1. 2m QSFP Copper Cable, (black in color)
3. 10m QSFP Optical Cable, (orange in color)
4. 30m QSFP Optical Cable, (orange in color)
5. 50m QSFP Optical Cable, (orange in color)
6. 100m QSFP Optical Cable (orange in color)

1. Introduction
User Guide Page 1-5
1.1.3.5 Power Cord & Power convertors
Two AC Power Cords are included in the SWF16 package. We also provide three types
of power convertors –EK, AU, EU, in addition to the US standard power cord.
.
1.1.3.6 Rail and Rail Extender
This accessory is included in your RAID system package. It is used to mount the A12S2-PS
system onto a standard 19” rack.
1.1.4 Key Features
Below are the key features of the system. They are the reasons why ExaSAN is your top
RAID solution for a power user, working on high-end personal work.
1. Host Interface
PCI Express Gen2 5Gb/S x4, transfer up to 20Gb/S
2. Disk Interface
Supports 12x SAS/SATA 6Gb and SSD disks
Supports 3.5”/2.5" hard disks
3. RAID Controller Specifications
Hardware XOR/Multi-Parity engine
2GB DDRII-800 memory, ECC-protected, support up to 4GB
4. Software Specifications
Multiple RAID levels: 0,1,5,6, 0+1, and JBOD
UP to 4 independent disk arrays
RAID capacity partitioning: up to 16 slices
Support up to 64 LUNs

1. Introduction
User Guide Page 1-6
Variable stripe sizes: 8, 16, 32, 64, 128, 256 (KB)
Selective initialization method with background initialization
Online RAID set expansion and level migration
Controller and Disk Cache Control to optimize read/write performance
Support write-back and write-through caching
Automatic drive insertion/removal detection and fast disk rebuilding
Online bad block data recovery and reallocation
Online disk scrubbing and data refresh and parity regeneration
Disk health monitoring by S.M.A.R.T.
NVRAM-based transaction log and auto parity resynchronization
Array roaming and disk traveling with redundant on-disk metadata
Array recovery to restore RAID configurations
Dual firmware images for firmware recovery
Disk lag proof technology to guarantee disk timely exposure
Equalization mode to smooth the performance of sequential
5. Management
Java-based GUI, cross-platform executable
Enclosure components monitoring and control via GUI
LED indicator for RAID & enclosure status
Event logging to text file with event viewer
Event notification by email (SMTP)
Centralized multiple RAID system management
Supports both in-band and out-band management
Supports RAID management by EFI and BIOS
Support firmware upgrade via GUI
Support CLI (Command Line Interface)
Support SNMP
Support remote management
6. Enclosure
Modularized components design, Power module and Fan module support hot-
pluggable.
FAN, Power, Temperature status LED indication in the front handle.
80plus power can be above 80% providing the energy conversion efficiency with
more power bill savings
Power supply also supports Power Management Bus (PMBus) protocol allowing it
to monitor power supply status and performance from RAIDGuard X
Dimensions: 88mm(H) x 483mm(W) x 597mm(L)
7. Supported OS
Windows 7, 8, 2008 and 2012 (32/64bit)

1. Introduction
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Linux: Red Hat, SUSE, Fedora, CentOS etc.
MAC: OS X( 10.5, 10.6, 10.7, 10.8, 10.9 and later)
8. Operating Conditions
Humidity: 5% - 85%
Operating Temperature: 0C –40C
Certification: RoHS, UL, CE, FCC, C-Tick, BSMI
9. Host connection
HBA: Z1M-G2 (PCIe2.0, 20Gb/s)
Convertor: C1M-G2 (Thunderbolt2.0 to PCIe2.0) ..more info
10. QSFP Cable
Connector PCI Express 2.0 x4
Copper cable support Length: 2M
Optical cable support Length: 10M, 30M, 50M, 100M
1.2 Unpacking the System
Your ExaSAN A12S2-PS is shipped in special packaging to provide protection during
transportation, as well as to facilitate simple and safe removal from the carton(s). Note
that different components may be shipped in separate cartons.
1.2.1 What Is In Your Order
Your ExaSAN System Integrator/Value Added Reseller should have helped you assess,
identify, and order all necessary system components and accessories. If you ordered
the complete system solution, your order includes everything described in Section 1.3.
Note that there are generic system components and accessories required by the
ExaSAN solution architecture, but they are not sold by your ExaSAN System
Integrator/Value Added Reseller and therefore not included in your ExaSAN A12S2-PS
order. Please refer to Section 1.5, “What Else You Need” for additional information.
1.2.2 Checking the Equipment You’ll Need
Section 1.1.3 has a complete list of all the equipment you’ll need to set up the ExaSAN
A12S2-PS. Check carefully against that list; verify that you have all of the system
components and accessories before commencing hardware installation.
1.2.3 Unpacking
Follow the steps below to open the carton and remove the system from its packaging.
Keep in mind that you should work with a second person if heavy lifting is a concern for
you.
1. Read Chapter 2, “Preparing to Install ExaSAN A12S2-PS.”
2. Remove any packing material on the outside of the carton.
3. Cut the tape at the top of the carton. If you use a long cutting instrument, exercise
care to avoid damaging the content inside.

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User Guide Page 1-8
4. Open up the top flaps of the carton to reveal the content inside. Remove the
protective foam on top of the system. Carefully remove each item from inside the
carton.
1.3 What’s in the Box
Carefully check your carton contents against the included packing list, or the inside
flap of the box, and your original purchase order. You should have the items as
described in the sections below.
Contact your Accusys System Integrator/Value Added Reseller or Accusys Customer
Service (see Appendix C “Customer Service and Technical Support” for more
information) to report any missing item.
1.3.1 The ExaSAN RAID
Your ExaSAN RAID disk system carton contains the following items:
1. PCIe 2.0 RAID disk system - A12S2-PS (x1)
2. Accessories package (x1)
3. Disk tray package (x1)

1. Introduction
User Guide Page 1-9
1.3.2 ExaSAN Accessories
The Accessories package includes the following items. These items can also be ordered,
packaged, and shipped separately from Accusys.
1. QSFP Host Bus Adapter (x1)
2. Half-high bracket (x1) for full-high bracket replacement
3. 2M QSFP copper cable (x1)
4. AC power cord cable (x2)
5. Installation CD (x1)
6. Quick Start Guide (x1)
7. Rail set (x2)
8. Rail extender (x2)
9. Screw pack for disk tray (x2)
10. Screw pack for rack (x2)
11. Power converter UK, EU, AU to US (x3)
1.3.3 Disk Tray package
The Disk Tray package is divided into two layers. Each layer holds 6 disk trays, with a
total of 12 disk trays.
1.4 SAS JBOD Expansion
The SAS JBOD Expansion is sold separately from the A12S2-PS. The SAS JBOD expansion
uses 2U 12 drive rack mount chassis similar to the A12S2-PS. The SAS JBOD expansion
can be daisy-chained, up to maximum of 3 units, from a single A12S2-PS to expand
capacity to a maximum of 48 hard drives (including the A12S2-PS). The SAS JBOD
expansions can be controlled off a single A12S-PS RAID controller, providing a cost
effective solution to expanding the RAID capacity.
Note
The SAS JBOD is not equipped with a RAID controller and thus
can not be used independently of the A12S2-PS.
1.5 Your A12S2-PS at a Glance
This section helps you get familiar with the physical appearance of your ExaSAN A12S2-
PS.
1.5.1 ExaSAN A12S2-PS
1.5.1.1 A12S2-PS Front Panel

1. Introduction
User Guide Page 1-10
Item
Name
Description
1
Controller A Status
Steady Blue indicates the controller A is
working normally.
Flashing Blue indicates the host is
accessing.
Steady Red indicates the controller A has
failed.
Flashing Red Other error.
2
System Fan
Steady Blue indicates the fan modules

1. Introduction
User Guide Page 1-11
are working normally.
Steady Red indicates one or more of the
fan modules failed.
3
System Temperature
Steady Blue indicates the system
temperature is under the preset value.
Steady Red indicates the system
temperature is over the preset value.
4
System Power
Steady Blue indicates the subsystem
power supplies are working normally.
Steady Red indicates that a power
supply has failed.
5
Mute Button
Pushing the button will turn off the system
beeper when beeper is sounding. If
another abnormal event occurs, the
beeper will alarm again.
If you want to disable the beeping all the
time, please use GUI of the RAID system
and find the “Preference“to uncheck
the “Beeper”. For more information,
please refer to the section 4.1.2.7
1.5.1.2 Beeper Codes
Controller Status
Beeper mode
Turn on the Controller
One short beep
System Panic
Long beep
Controller Work Status, ex:
Disk init, disk rebuild, disk
expansion, disk migratrion, disk
snapshot, etc.
Regularly repeating one short beep
System Problem, ex:
Fan issue, Power issue, RAID error,
Regularly repeating three short
beeps

1. Introduction
User Guide Page 1-12
etc.
Create array successfully
One short beep
Open the Beeper setting
Two short beeps
Memory test error
Regularly repeating three rapid short
beeps
1.5.1.3 Disk Mapping
Disk 1
Disk 4
Disk 7
Disk 10
Disk 2
Disk 5
Disk 8
Disk 11
Disk 3
Disk 6
Disk 9
Disk 12
1.5.1.4 Disk Tray
Disk Status
LED #1
LED #2
Disk Online
Steady Green
Disk Fail
Steady Red
No Disk
Steady Red
Disk Lock
Steady Green
Disk Access
Flashing Blue
Steady Green
Disk Initialization
Flashing Blue
Steady Green
Disk Rebuild
Flashing Blue
Rebuild Drives: Steady Red
Original Drives: Steady Green
Disk Expansion
Flashing Blue
Extend Drives: Rotating Green
& Red