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EXP395 storage expansion enclosures are equipped with ac power supply and fan
units that support both NEBS/ETSI operating environments and standard IT and
office environments.
Operating system support
For supported operating systems, see the latest DS Storage Manager host software
README file and the IBM DS3950 series products 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 xxi to learn how to access the DS3950 README files on the Web.
FC-SAS defined
In this document, the term FC-SAS refers to a SAS drive with a FC-SAS interposer
that translates the SAS drive interface to a FC protocol interface. Contrast with "SAS
defined".
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 DS3950 storage subsystem to the EXP395 is a 4 Gbps
fibre-channel device that supports data transfer rates up to 400 MBps half-duplex
and 800 MBps full-duplex on optical interfaces.
SAS defined
The Serial-attached SCSI (SAS) is a data-transfer technology that moves data to and
from computer storage devices such as hard drives and tape drives. SAS uses a
point-to-point serial protocol instead of the traditional parallel SCSI bus
technology. In this document, the term FC-SAS refers to a SAS drive with a
FC-SAS interposer that translates the SAS drive interface to a FC protocol interface.
See "FC-SAS defined".
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 DS3950 EXP395 Storage Expansion Enclosure: Installation, User's, and Maintenance Guide
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