White Paper: Understanding iSCSI Digests - Accurately Evaluating the Cost and Risk of Disabling Digests
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چکیده
The iSCSI protocol plays a major role in facilitating the deployment of flexible data storage networks. Designed to run over TCP and, to a lesser extent, over Ethernet, iSCSI introduces another protocol layer to the data transfer process. Part of the iSCSI specification provides for a digest to detect errors that occur at this iSCSI layer. Processing the iSCSI digest is believed by many to so adversely affect performance that it is common practice to disable the iSCSI digest, instead relying upon TCP and/or Ethernet error detection mechanisms to ensure data integrity.
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