394SAN Multiprotocol Routing: An Introduction and Implementation
Figure 13-4 SCSI write over high-latency environment with fast write
Fast write tracks the status of all of its open Fibre Channel sessions at both the
local and remote site. Any error condition on the target is detected by the initiator
during the final SCSI completion message and leads to error recovery. Also, the
Fibre Channel protocol has incorporated a checksum mechanism in its design to
ensure data integrity. The fast write does not interfere by the final SCSI
completion message; this is sent at the end of the session to the real initiator. All
of these aspects ensure data ...
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