details about the various options you can order depending on the model, contact
your IBM sales representatives or reseller for information.
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
1
can be supported, compared to 15
small computer system interface (SCSI) devices.
The optical fibre channel connection from the DS5100 and DS5300 to fibre channel
host bus adapter ports, or from the DS5100 and DS5300 to DS5100 and DS5300
storage expansion enclosure ports (such as an EXP5000), is a 4-Gbps fibre
channel connection that supports a data transfer rate up to 400 MBps at half-duplex
and 800 MBps at full-duplex.
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, and can be found at the following Web site:
http://www.serialata.org.
iSCSI defined
The Internet Small Computer System Interface (iSCSI) is an IP-based standard for
linking data storage devices over a network and transferring data by carrying SCSI
commands over IP networks.
Features at a glance
Table 2 on page 3 summarizes the features of the storage subsystem. For a list of
the operating specifications, such as weight, height, and heat output, see
“Specifications” on page 25.
1. For the DS5100 and DS5300, each drive is considered to be a device in a fibre channel loop, even though the DS5100 and
DS5300 might connect with SATA as well as fibre channel drives.
2
IBM System Storage DS5100 and DS5300 Storage Subsystem: Installation, User’s, and Maintenance Guide
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