November 2001
Intermediate to advanced
320 pages
7h 58m
English
Content preview from IP SANs: A Guide to iSCSI, iFCP, and FCIP Protocols for Storage Area NetworksBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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4.2. The SCSI Architectural Model
The SCSI-3 family of standards introduced several new variations of SCSI commands and a protocol, including serial SCSI-3 and special command sets for streaming and media handling required for tape. As shown in Figure 4-3, the command layer is independent of the protocol layer, which is required to carry SCSI-3 commands between devices. This enables more flexibility in substituting different transports beneath the SCSI-3 command interface to the operating system. In small desktop video editing systems, for example, IEEE 1394 FireWire can be used for high-speed but limited-distance SCSI-3 serial bus transactions to peripheral equipment.
Figure 4-3. SAM-2 SCSI-3 standards functional layers. Implementations such ...
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