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| Summary of enclosure-based naming | ||
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By default, DMP uses enclosure-based naming.
Enclosure-based naming operates as follows:
All fabric or non-fabric disks in supported disk arrays are named using the enclosure_name_# format. For example, disks in the supported disk array, enggdept are named enggdept_0, enggdept_1, enggdept_2 and so on.
You can use the vxdmpadm command to administer enclosure names.
See the vxdmpadm(1M) manual page.
Disks in the DISKS category (JBOD disks) are named using the Disk_# format.
Devices in the OTHER_DISKS category are disks that are not multipathed by DMP. Devices in this category have names of the form hdisk#, which are the same as the device names generated by AIX.
By default, enclosure-based names are persistent, so they do not change after a reboot.
If a CVM cluster is symmetric, each node in the cluster accesses the same set of disks. Enclosure-based names provide a consistent naming system so that the device names are the same on each node.
To display the native OS device names of a DMP disk (such as mydg01), use the following command:
# vxdisk path | grep diskname
See Enclosure based naming with the Array Volume Identifier (AVID) attribute.
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