Why Do Some of My EVS Disks Not Have WWN Information?
EVS disks have two device types: VBD and SCSI. WWNs are used as the unique identifiers for SCSI EVS disks, and VBD EVS disks do not have WWNs.
You can view the WWN of a SCSI EVS disk on the management console. The details are as follows:
- If the SCSI EVS disk is brand new, you can view the disk WWN on the disk details page.
- If the SCSI EVS disk was created before the WWN feature rollout, the disk WWN will fail to be obtained.
Figure 2 shows the query result.
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