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Attention:
v To attach DS4000 EXP drive expansion enclosures to a DS4500, refer to the
various sections in this IBM TotalStorage DS4500 Fibre Channel Storage
Subsystem Installation, User’s, and Maintenance Guide for the required software
and firmware version, supported drive expansion enclosures and drive loop
cabling rules and instructions. In addition, you must purchase the FC/SATA
Enclosure Intermix premium option to combine DS4000 EXP100s or DS4000
EXP810s with SATA enhanced disk drive modules (E-DDMs) with DS4000
EXP700s, DS4000 EXP710s, or DS4000 EXP810s with fibre channel drives in
the same DS4500 Storage Subsystem configuration. You can also refer to the
IBM System Storage
™
DS4000 Hard Drive and Storage Expansion Enclosure
Installation and Migration Guide for additional information on the required version
of the DS4500 controller firmware and the supported combination of enclosure
types intermix behind a DS4500 subsystem.
v The DS4500 controller units are not compatible with the DS4400 or FAStT500
controller units. The DS4500 controller units are keyed to prevent them from
being mistakenly inserted in the non-supported storage subsystem units. Do not
force fit the controller units or the backplane might be damaged.
The
DS4000 Storage Manager client is also available for the DS4500. This storage
management software is designed to help centralize storage management, help
simplify partitioning of the DS4000 series storage into as many as 64 virtual
servers, and strategically allocate storage capacity to maximize storage space.
Operating system support
Microsoft
®
Windows 2000 Server and Advance Server, Microsoft Windows 2003
Server and Enterprise Edition, Sun
®
Solaris, IBM AIX, RedHat Enterprise Linux
Server, and SuSE Linux Enterprise Server, HP-UX, Novell Netware, Linux on
POWER and VMware ESX Server are the supported operating systems for host
servers that have mapped LUNs created in the DS4500 with storage expansion
enclosures. See the latest DS4000 Storage Manager host software readme file and
the IBM DS4000 series products interoperability matrix at the following Web site for
additional host operating system support:
www.ibm.com/servers/storage/disk/ds4000/interop-matrix.html
Fibre channel defined
Fibre channel technology is outlined in the SCSI-3 Fibre Channel Protocol
(SCSI-FCP) standard. Fibre channel is a high-speed data transport technology that
is used for mass storage and networking.
Using a fibre channel arbitrated loop (FC-AL), more than 100 fibre-channel devices
can be supported, compared to 15 small computer system interface (SCSI) devices.
The fibre channel connection speed from the DS4500 to storage expansion
enclosures is either 2 Gbps depending on the type of enclosures to which the
DS4500 is connected, allowing data transfer rates up to 200 Mbps half-duplex and
400 Mbps full-duplex on optical interfaces.
SATA defined
The Serial Advanced Technology Attachment (SATA) interface offers increased data
rate performance over Parallel Advanced Technology Attachment (ATA), while
maintaining the benefits of ATA. SATA is designed to overcome the performance
barriers that have been forecasted for current parallel technologies while
maintaining the cost-efficiency of Parallel ATA. SATA specifications allow for thinner,
2 IBM TotalStorage DS4500 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide