IBM System Storage DS3000 User manual

IBM System Storage™ Digital Media Storage Solution
Installation Guide
Selling and Deploying DS3000/DS4000/DS5000
in Apple and StorNext Environments
Con Rice
Modular Storage Product Specialist
LSI Corporation
12007 Sunrise Valley Drive, Suite 325
Reston, VA 20191
Cell: 703-867-0012
Tel: [phone]
e-mail: [e-mail]
Digital Media Storage Solution Installation Guide
February 25, 2010
© Copyright 2010, IBM Corporation

Digital Media Storage Solution Installation Guide 2
© Copyright 2010, IBM Corporation. All rights reserved.
Contents
INTRODUCTION....................................................................................................................... 4
File Sharing Environments..................................................................................................... 4
THREE CURRENT SOLUTIONS .............................................................................................. 5
Apple Homogenous................................................................................................................ 5
Apple Xsan Clients with Linux MDC (Meta Data Controller)............................................... 5
Linux Homogenous................................................................................................................ 5
Linux StorNext Clients with Linux MDC.............................................................................. 5
Heterogeneous ...................................................................................................................... 6
Apple Xsan Clients, Linux StorNext Clients, Windows Clients (June) and Linux MDC....... 6
COMPONENT DESCRIPTIONS ............................................................................................... 6
Apple Clients.......................................................................................................................... 6
Linux StorNext Clients and MDC‟s......................................................................................... 6
SAN Architecture must meet RPQ criteria ............................................................................. 7
IBM Storage........................................................................................................................... 7
PLANNED SUPPORT ROLLOUT ............................................................................................. 8
Apple Homogenous................................................................................................................ 8
Apple Xsan Clients with Linux MDC (Meta Data Controller)............................................... 8
Linux Homogenous................................................................................................................ 9
Linux StorNext Clients with Linux MDC.............................................................................. 9
Heterogeneous .................................................................................................................... 10
Apple Xsan Clients, Linux StorNext Clients, Windows Clients (June) and Linux MDC..... 10
Planned Future Enhancements............................................................................................ 11
Additional Linux HBA choices and Windows Server 200x Meta data Controller............... 11
APPLE, WINDOWS, and STORNEXT SUPPORT MATRIX.................................................... 11
SOLUTION RESTRICTIONS AND RECOMMENDATIONS.................................................... 12
RECOMMENDED RAID CONFIGURATIONS......................................................................... 13
SOLUTION INSTALLATION.................................................................................................... 14
QUANTUM / APPLE JOINT PRODUCT SUPPORT PROGRAM............................................ 16
Overview .......................................................................................................................... 16
Xsan Controlled SAN File System.................................................................................... 16
StorNext Controlled SAN File System.............................................................................. 16
Cooperation Effort Between Apple and QUANTUM ......................................................... 16

Digital Media Storage Solution Installation Guide 3
© Copyright 2010, IBM Corporation. All rights reserved.
Closing a Case................................................................................................................. 16
MIGRATING FROM XSAN MDC TO STORNEXT MDC...................................................... 17
ATTO....................................................................................................................................... 18
ATTO HBA INSTALLATION.................................................................................................... 19
ATTO Config Tool Features................................................................................................. 20
ATTO OS X Driver Installation............................................................................................. 20
ATTO OS X Configuration Tool Installation.......................................................................... 21
Viewing multipathing information ......................................................................................... 22
Paths Tab............................................................................................................................. 22
Path Status at Target Level.................................................................................................. 23
Path Status at LUN Level..................................................................................................... 23
Additional Path Information.................................................................................................. 24
Detailed Info......................................................................................................................... 25
Load Balancing Policies....................................................................................................... 26
Configuring Multipathing ...................................................................................................... 26
Collecting Celerity Host Adapter Info ................................................................................... 27
FC Host Adapter Configuration............................................................................................ 27
Useful OS X Applications..................................................................................................... 28
ATTO Problems? ................................................................................................................. 28
Escalation Checklist ......................................................................................................... 28
APPENDIX: CONFIGURATION SCRIPTS Setting TPGS On ................................................. 29
Turning AVT Off................................................................................................................... 29
APPENDIX: EXAMPLE CONFIGURATIONS.......................................................................... 30
Large Heterogeneous StorNext configuration...................................................................... 30
Mid to large -sized “MAC Homogenous” StorNext configuration.......................................... 32
Mid-sized “MAC Homogenous” StorNext configuration....................................................... 33
Mid-sized “MAC Homogenous” StorNext configuration........................................................ 34
Small “MAC Homogenous” StorNext configuration .............................................................. 35
Mid to large -sized Heterogeneous StorNext configuration.................................................. 36
Additional Reference Links...................................................................................................... 37
Notices..................................................................................................................................... 37
Trademarks ............................................................................................................................. 38

Digital Media Storage Solution Installation Guide 4
© Copyright 2010, IBM Corporation. All rights reserved.
INTRODUCTION
There has long been a desire to support Apple servers and work stations with IBM DS series
storage, and now we have that capability. But due to confusion in the past, we will be
approving a very specific set of known, quality configurations. There are two basic aspects of
these solutions: One is basic hardware connectivity, the second is the support for file sharing.
It‟s important not to confuse the two. Basic hardware connectivity to Apple is supported via
RPQ. File sharing is also supported, but because of the added complexity requires very
specific configuration and a more restrictive RPQ process.
File Sharing Environments
Apple installations typically use a shared file system called Xsan. Xsan is in reality a lite
version of Quantum‟s StorNext File System. StorNext is very popular in the media market
because it allows shared block-level file system access while offering integrated archive
management. However, Apple offers very limited support outside very specific configurations.
A 100% apple configuration must be used.
There are three components to the StorNext solution: Clients, Meta Data Controller (MDCs),
and the storage. There are also ancillary components such as the SAN, the TCP/IP network,
and archive storage such as tape libraries. However, for selling and support purposes the
components are software, support, and implementations services.
StorNext Environment
The announced support for the IBM Digital Media Storage Solution is the result of efforts
between ATTO (HBA‟s), Quantum (StorNext), LSI (Storage Subsystems), and IBM. We have
identified a set of hardware, firmware, and configuration parameters that will be supported. The
set of configurations will be expanded in a logical manner over the next few months as
additional choices are available and tested.

Digital Media Storage Solution Installation Guide 5
© Copyright 2010, IBM Corporation. All rights reserved.
THREE CURRENT SOLUTIONS
Apple Homogenous
Apple Xsan Clients with Linux MDC (Meta Data Controller)
(Apple can also be connected without Xsan/StorNext support)
Linux Homogenous
Linux StorNext Clients with Linux MDC

Digital Media Storage Solution Installation Guide 6
© Copyright 2010, IBM Corporation. All rights reserved.
Heterogeneous
Apple Xsan Clients, Linux StorNext Clients, Windows Clients (June) and Linux MDC
COMPONENT DESCRIPTIONS
Apple Clients
•Apple connection without StorNext/Xsan support, or
•May use Apple Xsan Client software
oIf you use the Xsan clients and Xsan Meta Data Controller (MDC), then your
support comes from Apple. However, if you use the StorNext MDC from
Quantum, then Quantum will support the entire solution including the Xsan
clients loaded on the Mac‟s. As you can see, this is a much more flexible
solution.
•Must use Linux StorNext Meta Data Controllers
•Must use ATTO HBA and Multipath driver
oATTO Celerity 8GB FC HBAs:
FC-84EN [Quad Port]
FC-82EN [Dual Port]
FC-81EN [Single Port]
Linux StorNext Clients and MDC’s
•Must buy Quantum StorNext software
•Must buy Installation services from StorNext
•Must buy support contract from Quantum
•Supported Qlogic or Emulex HBA‟s
•RDAC MPP Multipath diver
•Servers must run approved versions of SLES or RHEL

Digital Media Storage Solution Installation Guide 7
© Copyright 2010, IBM Corporation. All rights reserved.
SAN Architecture must meet RPQ criteria
•Limit number of paths for Xsan/StorNext clients to four
•This is to limit both complexity and the amount of time required to initialize clients
on the SAN
•Redundant Meshed Fibre Channel SAN (cross-connected)
•RDAC MPP supports this configuration
•Some IBM documentation may seem to preclude this, but those documents are
based on an old non-“mpp” version of RDAC
•Limits cause for failover to Controller failure
•Specific Firmware, software, and Operating System Levels
IBM Storage
•DS5100/DS5300
•DS5020
•DS4700
•DS3400
•Future
DS3400
DS4700
DS5020
DS5100
base
performance
DS5300
enhanced
performance
Burst I/O rate
cache reads
(IOPS)
110,000
120,000
200,000
650,000
700,000
Sustained I/O rate
disk reads
21,000
39,250
50,000
76,000
170,000
Sustained I/O rate
disk writes
4,500
9,350
9,500
20,000
38,000
Drives
48 SAS/SATA
112 FC/SATA
112
FC/SATA/FDE
256
FC/SATA/FDE
448
FC/SATA/FDE
/SSD*
(480) SATA*
Burst throughput
cache read
1,600
1,550MB/s
3,700 MB/s
1,600MB/s
6,400 MB/s
Sustained
throughput
disk read
925
980MB/s
1,600 MB/s
1,600MB/s
6,400 MB/s
Sustained
throughput
disk write
720
850 MB/s
1,400 MB/s
1,300 MB/s
5,300 MB/s
Host ports
4
4
4
8
16

Digital Media Storage Solution Installation Guide 8
© Copyright 2010, IBM Corporation. All rights reserved.
PLANNED SUPPORT ROLLOUT
There are very specific capabilities that are being added and they are tied to specific hardware,
software, and driver availability. Support will be added in this order:
Apple Homogenous
Apple Xsan Clients with Linux MDC (Meta Data Controller)
(Apple can also be connected without Xsan/StorNext support)
1. Single Host Client connected to DS3000/DS4000/DS5000 Storage (NOW)
a. Apple Leopard and Snow Leopard
i. Using ATTO HBA‟s and multipathing driver
b. Without StorNext or Xsan support
c. This is basic host connectivity support.
2. Multiple Apple Host Client connected to DS3000/DS4000/DS5000 Storage (NOW)
a. Apple Leopard and Snow Leopard using Xsan Client software
i. Using ATTO HBA‟s and multipathing driver
b. With StorNext MDC‟s running on RHEL/SLES
i. Using previously supported QLogic and/or Emulex HBA‟s

Digital Media Storage Solution Installation Guide 9
© Copyright 2010, IBM Corporation. All rights reserved.
Linux Homogenous
Linux StorNext Clients with Linux MDC
3. Multiple Linux Host Client connected to DS3000/DS4000/DS5000 Storage (NOW)
a. RHEL/SLES using StorNext Client software
i. Using previously supported QLogic and/or Emulex HBA‟s
b. With StorNext MDC‟s running on RHEL/SLES
i. Using previously supported QLogic and/or Emulex HBA‟s

Digital Media Storage Solution Installation Guide 10
© Copyright 2010, IBM Corporation. All rights reserved.
Heterogeneous
Apple Xsan Clients, Linux StorNext Clients, Windows Clients (June) and Linux MDC
4. Mixed Host Apple and Linux Client connected to DS3000/DS4000/DS5000 Storage
(NOW)
a. Apple Leopard and Snow Leopard using Xsan Client software
i. Using ATTO HBA‟s and multipathing driver
b. RHEL/SLES systems using StorNext CLIENT software
i. Using previously supported QLogic and/or Emulex HBA‟s
c. With StorNext MDC‟s running on RHEL/SLES
i. Using previously supported QLogic and/or Emulex HBA‟s
5. Single Host Windows Client connected to DS3000/DS4000/DS5000 Storage
a. Windows client (XP, Vista, Windows 7) (June)
i. Using ATTO HBA‟s and multipathing driver
b. Without StorNext or XSAN support
c. This is basic host connectivity support.
6. Add Windows Host Client in mixed environments support connected to
DS3000/DS4000/DS5000 Storage
a. Windows client (XP, Vista, Windows 7) (June)
i. Using ATTO HBA‟s and multipathing driver
b. With StorNext MDC‟s running on RHEL/SLES
i. Using previously supported QLogic and/or Emulex HBA‟s
ii. Using ATTO HBA‟s with either RDAC MPP or ATTO multipathing driver

Digital Media Storage Solution Installation Guide 11
© Copyright 2010, IBM Corporation. All rights reserved.
Planned Future Enhancements
Additional Linux HBA choices and Windows Server 200x Meta data Controller
7. Expand RHEL/SLES connectivity choices (Planned)
a. Add ATTO HBA‟s for either MDC‟s and/or clients using RDAC MPP
i. This step is not tied to any other steps and may occur at any time after step 3
b. Add ATTO HBA‟s for either MDC‟s and/or clients using ATTO multipathing driver
i. This step is not tied to any other steps and may occur at any time after step 3
8. Add Windows Server 200x as either StorNext clients or as StorNext MDC‟s (Planned)
a. Windows client Server 200x
i. Using previously supported QLogic and/or Emulex HBA‟s
ii. Using ATTO HBA‟s with either RDAC MPP or ATTO multipathing driver
b. We will NOT add this until AFTER the Windows Clients (XP, Vista, Windows 7) are
added to reduce confusion
APPLE, WINDOWS, and STORNEXT SUPPORT MATRIX
O/S
Architecture
HBA
MPF
Supported
Meta Data Controller
Linux
RHEL 5.3
x64
As currently supported
(Qlogics/Emulex)
RDAC (MPP)
Yes
Linux
RHEL 5.3
x64
ATTO
ATTO
Planned
Linux
SLES 10.2
x64
As currently supported
(Qlogics/Emulex)
RDAC (MPP)
Yes
Linux
RHEL 5.3
x64
ATTO
ATTO
Planned
Client
Apple
OSX
Leopard
x64
ATTO
ATTO
Yes
Apple
OSX
Snow Leopard
x64
ATTO
ATTO
Yes
Linux
RHEL 5.3
x86, x64
As currently supported
(Qlogics/Emulex)
RDAC (MPP)
Yes
Linux
RHEL 5.3
x86, x64
ATTO
ATTO
Yes
Linux
SLES 10.2
x86, x64
As currently supported
(Qlogics/Emulex)
RDAC (MPP)
Yes
Linux
SLES 10.2
x86, x64
ATTO
ATTO
Yes
Windows
2003 SP2
x86, x64
As currently supported
(Qlogics/Emulex)
MPIO/DSM
Planned
Windows
2008 SP2
x86, x64
As currently supported
(Qlogics/Emulex)
MPIO/DSM
Planned
Windows
2008 R2
x86, x64
As currently supported
(Qlogics/Emulex)
MPIO/DSM
Planned
Windows
Windows 7
x86
ATTO
ATTO
Planned
Windows
Vista
x86
ATTO
ATTO
Planned
Windows
XP
x86
ATTO
ATTO
Planned
Mixed
As appropriate above
As appropriate
above

Digital Media Storage Solution Installation Guide 12
© Copyright 2010, IBM Corporation. All rights reserved.
SOLUTION RESTRICTIONS AND RECOMMENDATIONS
There are several important aspects to the configuring of the SAN that must be understood.
The first is that the SAN design is architected to avoid logical drive failover in the storage
subsystem. This is accomplished by employing a meshed fabric where each HBA on the
server can see both controllers on the storage subsystem. The second aspect has to deal with
access to the shared logical drives. There are three types of shared logical drives; Metadata,
Journal, and Data. All systems (MDC‟s and Clients) must be able to see the Data LUNs. The
MDC‟s must also be able to both see the Metadata and Journal LUNs. It is important that the
clients do not have access to the Metadata or Journal LUNs.
When configuring the storage partitioning within the storage subsystem, the methodology is as
follows:
All HBA‟s in the MDC‟s will be defined within a single host definition (called MDCs?). This
host definition will have the Metadata and Journal LUNs directly mapped to this host
definition.
All Clients have their own host definitions. If desired, all clients that have the same OS can
have their HBA‟s combined within a single host definition.
All Clients and the MDC‟s will be assigned to a single host group (called StorNext?). All of
the Data LUNs will be assigned to that host group.
HBA’s
Connections
Zone
MDC
Single or
multiple (typical)
Up to four
All ports see Controller A and Controller B on
DSxxxx
MDC - Limit number of defined paths to optimize initialization time. There are few MDC‟s in
comparison to clients, so this choice should not be as restrictive as below. This is not a hard
requirement, but is recommended.
Most configurations consist of two MDC‟s for high availability. Both MDC‟s must have the
same configuration; OS, HBA‟s, Driver Levels, etc
Client
Single (typical)
or multiple
Up to two
All ports see Controller A and Controller B on
DSxxxx
Client –Limit number of defined paths to four to optimize initialization time. This is not a hard
requirement, but is recommended.
Storage
Controller A
Up to 8
All ports see all MDC and client ports
Controller B
Up to 8
All ports see all MDC and client ports

Digital Media Storage Solution Installation Guide 13
© Copyright 2010, IBM Corporation. All rights reserved.
RECOMMENDED RAID CONFIGURATIONS
RAID
level
RAID Array
size
Segment
size
Disk type
Journal
1 or 10
As required
256
FC or SAS recommended
Meta Data
1 or 10
As required
256
FC or SAS recommended
Journal and Meta Data may reside in separate LUN‟s carved from the same RAID Array if
required in small implementations. However, the ideal condition is separate LUN‟s tied to
separate RAID groups for Journal and Meta Data. If possible, these two LUN‟s should be
on a different storage system than the data LUN‟s.
StorNext can stripe across multiple LUN‟s. It is recommended that multiple RAID 1 Groups
be used for Journal and Meta data rather than similarly sized RAID 10‟s. This allows
multiple threads to be talking to disk offering enhanced performance.
Data
5
4+1
256
As required to meet performance
criteria
5
8+1
128
As required to meet performance
criteria
Data –Based upon StorNext file system header block size of 1MB, it is important to keep
this in mind when selecting the segment size. RAID Array (also called Group) size and
appropriate segment size should result in stripe size of 1MB. This will result in optimizing
write throughput speeds. Ex. RAID5 4+1 (4 data) drives x 256K (seg size) = 1 MB Write
stripe & RAID5 8+1x128K (seg size) = 1 MB stripe.
Note –this rule does not apply to all deployments and could be dramatically different for
oil and gas industry deployments among others. It is very important to understand the I/O
block size of the applications sitting atop the StorNext File system.
Data
6
4+2
256
As required to meet performance
criteria
6
8+2
128
As required to meet performance
criteria
•Some customer applications may specify SATA drives and/or require additional RAID
protection. The DS3000/DS4700/DS5000 storage servers offer additional levels of RAID
protection if desired.

Digital Media Storage Solution Installation Guide 14
© Copyright 2010, IBM Corporation. All rights reserved.
SOLUTION INSTALLATION
1. Use a meshed fabric with each HBA zoned to see both controllers but controllers unable to see each
other.
2. Use RDAC or MPIO failover drivers as appropriate for your operating systems (ATTO for Apple). Do not
use the StorNext failover driver
3. For Apple Clients
a. Set host type LNXCLVMWARE
b. Set TPGS On
c. See script later in this document
d. MAC‟s must use ATTO Celerity FC81-EN, FC82-EN, or FC-84-EN HBA‟s using the 1.3.1b12 driver
Atto site
http://www.attotech.com/
Driver downloads,
https://www.attotech.com/register/index.php?FROM=http://www.attotech.com/downloads.html
The user is required to register and create a free account. Then navigate to,
Fibre Channel HBA‟s for Storage Partners.
IBM DS Series Celerity FC-8xEN
4. When connecting to MAC systems
a. Switched environments preferred
b. In non switched environments, may need to reboot MAC if it doesn‟t see storage
c. To eliminate this issue - configure the ATTO host adapter and DS controller for a "Point to Point"
connection instead of allowing them to auto negotiate.”
5. For Linux Clients mixed with Apple Clients
a. If Apple servers or clients are sharing physical connection to a storage system, it is important to
use the proper host type definitions.
b. Since we are using LNXCLVMWARE for apple, use LINUX for Linux servers and clients.
6. How to handle mixing multiple server and client O/S types need to access same LUN‟s:
a. The MDC‟s in the approved solutions will always be Linux (Windows may also eventually be
supported)
b. Clients can be Apple or Linux (and also eventually Windows)
c. To allow disparate O/S host connections:
1. Create a Host Group with no Host type associated
2. Assign multiple host types to this group.
7. Set AVT Off for all Host Types.
a. See script later in this document
8. Recommended cache settings: Set pre-fetch value to any number other than 0 (zero) to enable automatic
prefetch.
9. For clients, limit the number of defined paths to four. This gives you the redundancy you need while
minimizing boot time. During boot, StorNext tries EVERY defined path.

Digital Media Storage Solution Installation Guide 15
© Copyright 2010, IBM Corporation. All rights reserved.
10. RAID 1 or 10 for Journal and Meta Data
a. Multiple RAID 1 Groups would be preferable to a similarly size RAID 10
b. Placing Meta Data and Journal on a storage system separate from the data is preferable.
11. It is desirable to separate Meta data and Journal LUN‟s and access from the Data LUN‟s.
a. In small installations, Meta data, Journal and Data can be different LUN‟s on the same RAID
group
b. However, it is best to separate MDC and Journal into their own RAID 1 RAID group.
c. When Data gets to be large (approximately 250,000 files or more), it is best to completely
separate Meta Data and Journal into their own storage system.
d. A typical segment size for the MDC RAID group(s) is 256. Though this may vary with various
applications. It is critical to understand the I/O demands of the applications being deployed.
12. The size and RAID type used for Data are really dependent upon customer requirements. But these
levels are recommended for typical media applications:
a. RAID 5 4+1 or RAID 5 8+1
b. Explanation: RAID 5 4+1 means a RAID group using RAID 5 with 4 data drives and one parity
drive. Even though in actuality, the data and parity would be striped across all drives.
13. Some applications (especially those using SATA drives) use different RAID types. Many scientific
applications might keep very large data stores on relatively inexpensive SATA disks. In these cases,
RAID 6 may be desired.
a. RAID 6 4+2 or RAID 6 8+2
14. Typically, the media applications using StorNext write in 1M block. So:
a. Using the formula Block size / number of data disks
b. RAID 5 4+1 using 256K segment size
c. RAID 6 4+2 using 256K segment size
d. RAID 5 8+1 using 128K segment size
e. RAID 6 8+2 using 128K segment size
f. These segment sizes are representative of the 1 meg I/O size typical in most media industry
applications. However, some applications (notably those in the oil and gas industry) may require
different segment sizes. It is critical to understand the I/O demands of the applications being
deployed.
15. Apple Clients HBA‟s: ATTO HBA‟s use default settings
16. Linux Clients HBA‟s: Emulex and QLogic HBA‟s use default settings.
17. Linux MDC and Clients HBA‟s: Emulex and QLogic HBA‟s use default settings.
18. Use standard performance tuning documentation as regards to disk and RAID group layouts etc.

Digital Media Storage Solution Installation Guide 16
© Copyright 2010, IBM Corporation. All rights reserved.
QUANTUM / APPLE JOINT PRODUCT SUPPORT PROGRAM
Quantum / Apple Joint Product Support Program
Overview
QUANTUM and Apple have agreed to a cooperative support relationship for QUANTUM‟s
StorNext and Apple‟s Xsan products. This means joint customers are assured that both
companies will work together to resolve any technical issues with our respective products.
Xsan Controlled SAN File System
In the case of the joint customer having an Xsan controlled SAN file System, (i.e. Xsan runs the
main server or Meta Data Controller), then Apple should receive the first call. If QUANTUM does
receive the first call QUANTUM will start a case report and try to determine if the issue is related
to the QUANTUM portion of the install. If after some investigation it is determined that an Apple
case remedy is required, then QUANTUM shall notify the Apple Technical Support Contact, and
shall provide the customer‟s information. Apple shall contact the joint customer in accordance
with that party's customer support and/or maintenance agreement with the joint customer.
QUANTUM shall continue to be available to provide information and/or assistance, as
reasonably necessary.
StorNext Controlled SAN File System
In the case of the joint customer having an StorNext controlled SAN file system (i.e. StorNext
runs the main server or Meta Data Controller), then QUANTUM should receive the first call. If
Apple does receive the first call Apple will start a case report and try to determine if the issue is
related to the Apple portion of the install. If after some investigation it is determined that an
QUANTUM case remedy is required, then Apple shall notify the QUANTUM Technical Support
Contact, and shall provide the customer‟s information. QUANTUM shall contact the joint
customer in accordance with that party's customer support and/or maintenance agreement with
the joint customer. Apple shall continue to be available to provide information and/or assistance,
as reasonably necessary.
Cooperation Effort Between Apple and QUANTUM
If, after making reasonable but unsuccessful efforts to provide a case remedy, the parties shall
then endeavor to share information and use cooperative efforts to determine and/or isolate the
cause of the case report. The party in whose product the cause is isolated shall deliver or
implement a timely case remedy; the other party agrees to use reasonable efforts to supply
information, assist, and confirm the case remedy. Apple and QUANTUM are responsible for
support and maintenance of its own products, and are not authorized to support or maintain the
products of the other party.
Closing a Case
The consent of a joint customer shall be required to close a case.

Digital Media Storage Solution Installation Guide 17
© Copyright 2010, IBM Corporation. All rights reserved.
MIGRATING FROM XSAN MDC TO STORNEXT MDC
Q. Are there new features in Xsan 2.2 that make it harder to swap out XServe MDCs and replace them with
StorNext Linux MDCs?
A: “NamedStreams”is the Apple Xsan feature that causes some problems with StorNext. If you don‟t turn it on,
you‟re fine. By default, “NamedStreams”is turned on. NamedStreams will make things like the basic StorNext
command line copy command, cvcp, not work. Before Xsan 2.2, you could have it copy the “._”files, but now you
can't, so you're stuck doing a move with the Apple Finder (which is basically as good as cvcp anyway). Other
than that, it shouldn't be much of an issue since it doesn't affect clients that don't know about it, and by definition
Windows/Linux clients don't know about resource forks.
Q. Does a customer need to buy A special level of StorNext support to support StorNext in Xsan environments? Is
this true whether you are using SN MDCs or Apple MDCs?
A: No, You don‟t need to buy any special support to get support for StorNext in an Xsan environment. See next
page.

Digital Media Storage Solution Installation Guide 18
© Copyright 2010, IBM Corporation. All rights reserved.
ATTO
ATTO Technology, Inc.
Value Proposition
ATTO Technology is a leader in storage and connectivity solutions. In business since 1988, ATTO has
maintained a consistent strategy of technical innovation by continually creating new and exciting Host Bus
Adapter (HBA) products that are on the leading edge of the storage market. Throughout the years, ATTO has
maintained a reputation for providing high-performance products in a variety of storage connectivity technologies
for a wide variety of market segments.
ATTO‟s customer base for host bus adapter solutions continues to grow each year from both our OEM and
channel partners through various market segments. ATTO has been manufacturing and shipping Fibre Channel
host adapters since 1997 with an installed based of over 1,000,000 Fibre Channel ports. With a solid customer
base and comprehensive line of HBA products which are augmented by complimentary storage-centric products,
customers can be assured that ATTO is a capable business partner fully versed in the HBA market.
ATTO bases all host adapter products on a common architecture with the goal of delivering consistent, industry
leading performance solutions to market.
The current 8-Gb Celerity line is the 6th generation of host adapters.
ATTO‟s Optimization Cores are a collection of internally developed, industry-tested solutions designed for
the low-latency, high-bandwidth demands of high-performance streaming storage applications.
ATTO's Exclusive Advanced Data Streaming (ADS™) Technology provides the ultimate in I/O
performance
oControlled acceleration of large and small blocks of data provides faster, more efficient data
transfer Accelerated PCI Bus management
oEfficient Full Block Buffering
oOptimized SCSI-3 Algorithms for Streaming Media applications
oImproved Data Interleave Architecture
ATTO designs are based upon extensive knowledge and experience on what it takes to move data for the
video market. ATTO firmware and drivers are written with the specific goal of managing latency so that
customers are able to move multiple streams of uncompressed and compressed video with alpha
channels and audio.
The storage industry continues to advance at an unparalleled pace, and solutions are becoming more complex
and more intelligent. ATTO is an industry leader at incorporating the solutions for tomorrow‟s storage needs in
today‟s products.

Digital Media Storage Solution Installation Guide 19
© Copyright 2010, IBM Corporation. All rights reserved.
Product Features
Celerity HBA‟s
FC84EN
FC82EN
FC81EN
Fibre Channel Ports
4
2
1
Maximum Data Rate
8Gb
8Gb
8Gb
Maximum Transfer Rate (Full Duplex)
6.4 GB/s
3.2 GB/s
1.6 GB/s
Maximum Transfer Rate (Half Duplex)
3.2 GB/s
1.6 GB/s
800 MB/s
Bus Type
PCIe 2.0
PCIe 2.0
PCIe 2.0
Bus Characteristics
X8
X8
X8
Optical Interface
SPF+LC
SPF+LC
SPF+LC
Maximum Cable Length
300m-2GB
150m-4GB
50m-8GB
300m-2GB
150m-4GB
50m-8GB
300m-2GB
150m-4GB
50m-8GB
Low Profile Form Factor
NO
YES
YES
Advanced Data Streaming (ADS)
YES
YES
YES
Software RAID Support
YES
YES
YES
Developers Kit (Target Mode and API)
YES
YES
YES
Windows (Server)
YES
YES
YES
Windows (work station / client)
PLANNED
PLANNED
PLANNED
Linux (Red Hat, SUSE)
YES
YES
YES
MAC OSX
YES
YES
YES
VMWare ESX
YES
YES
YES
RoHS Compliant
YES
YES
YES
http://www.attotech.com/selectioncharts/Celerity_Selection_Chart.pdf
ATTO HBA INSTALLATION
ATTO Technology and IBM have teamed up to offer a high performance Fibre Channel multipathing connection
into the IBM DS Series for MAC OS X, Windows and Linux.
Multipathing = failover + load balancing
Key Components:
–ATTO Celerity 8Gb FC HBAs (FC-81EN, FC-82EN, FC-84EN)
–ATTO custom Multipathing driver for IBM DS Series Storage
–ATTO Configuration Tool
–IBM DS Series Storage

Digital Media Storage Solution Installation Guide 20
© Copyright 2010, IBM Corporation. All rights reserved.
Multipathing is the ability to send I/O over multiple paths to the same LUN
Failover and load balancing done on a LUN basis
Monitors I/O paths –identifies changes in path status
Automatic re-routing of I/O upon detection of an interrupted connection
Failover/failback transparent to the OS or application
Increase performance by sending data over multiple paths
ATTO Config Tool Features
Allows simple Setup for the user. This is critical as IT staffs in the digital video industry are limited.
Shows the number of paths
Shows the status of each connection
Displays valuable FC Target and Initiator info (ex. WWPN, WWNN, etc)
Shows path data flow information in bytes
“Locate” button to blink the LED of the Fibre port associated with the path selected.
ATTO OS X Driver Installation
Download the latest driver file from www.attotech.com/soultions/ibm
*** Driver does not ship with standard ATTO product ***
Double-Click the osx_drv_celerity8_131MP.dmg file
(This will create and launch the disk image)
Click continue to agree to the “Software License Agreement”
Select the “Destination drive (boot drive)” and select continue
The driver will now automatically install
Reboot the machine