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Depending on the model, the EXP810 storage expansion enclosure is shipped with
either ac or dc (-48V dc) power supply and fan unit CRUs. In addition, an EXP810
Telco bezel assembly with an integrated air filter can also be purchased for the
operating environments that require it.
The EXP810 storage expansion enclosure with dc power supply and fan units
(1812-81S, 81T) supports both NEBS level 3/Telco operating environments and
standard Information Technology (IT) and office environments. However, not all
EXP810 models with ac power supplies (1812-81A, 81H) support both NEBS level
3/Telco operating environments and standard IT and office environments. EXP810
storage expansion enclosures that shipped before the introduction of the EXP810
models with dc power supply and fan units support standard IT and office operating
environments only. You can identify whether an EXP810 storage expansion
enclosure is NEBS/Telco compliant by checking the serial number. Any EXP810
storage expansion enclosures with serial numbers starting at 136250A and higher
are NEBS level 3/Telco compliant.
Operating system support
For supported operating systems, see the latest DS Storage Manager host software
readme file and the IBM DS4000 series products System Storage Interoperation
Center at the following Web site for additional host operating system support:
www.ibm.com/systems/support/storage/config/ssic/index.jsp
See "Finding Storage Manager software, controller firmware, and README files" on
page xxii to learn how to access the DS4000 readme files on the Web.
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 connection from the DS4000 storage subsystem to the EXP810 is a 2 or 4
Gbps fibre-channel device that supports data transfer rates up to 400 MBps
half-duplex and 800 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,
more flexible cables, and lower pin counts. It also enables easier, more flexible
cable routing management and the use of smaller connectors than is possible with
the existing Parallel ATA technology.
The Serial ATA Working Group introduced the first SATA specification, Serial ATA
1.0, in 2001. See the following Web site:
www.serialata.org
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IBM System Storage DS4000 EXP810 Storage Expansion Enclosure: Installation, User's and Maintenance Guide
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