January 2018
Intermediate to advanced
574 pages
14h 44m
English
Content preview from VMware vSphere 6.5 Cookbook - Third Edition
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Managing VMFS volumes detected as snapshots
Some environments maintain copies of the production LUNs as a backup, by replicating them. These replicas are exact copies of the LUNs that were already presented to the ESXi hosts. If for any reason a replicated LUN is presented to an ESXi host, then the host will not mount the VMFS volume on the LUN. This is a precaution to prevent data corruption.
ESXi identifies each VMFS volume using its signature denoted by a UUID (Universally Unique Identifier). The UUID is generated when the volume is first created or resignatured and is stored in the LVM header of the VMFS volume.
When an ESXi host scans for new LUN; devices and VMFS volumes on it, it compares the physical device ID (NAA ID) of the LUN ...
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