Prior to VxVM 3.2, all disks were named according to the c#t#d# naming format used by the operating system. Fabric mode disks were not supported by VxVM.
From VxVM 3.2 onward, the following methods for naming disk devices exist:
In the OS-based naming scheme, all disk devices except fabric mode disks are named using the c#t#d# format.
The syntax of a device name is c
#
t
#
d
#
, where c#
represents a controller on a host bus adapter, t#
is the target controller ID, and d#
identifies a disk on the target controller.
Fabric mode disk devices are named as follows:
#
format. For example, disks in the supported disk array name FirstFloor
are named FirstFloor_0
, FirstFloor_1
, FirstFloor_2
and so on. (You can use the vxdmpadm
command to administer enclosure names.)
DISKS
category (JBOD disks) are named using the Disk_
# format.
OTHER_DISKS
category (disks that are not multipathed by DMP) are named using the fabric_
# format.
Enclosure-based naming operates as follows:
#
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.
DISKS
category (JBOD disks) are named using the Disk_#
format.
OTHER_DISKS
category (disks that are not multipathed by DMP) are named as follows:
See "Changing the disk-naming scheme" on page 93.
To display the native OS device names of a VM disk (such as mydg01
), use the following command:
# vxdisk path | egrep
diskname
See "Renaming an enclosure" on page 151.
See "Disk categories" on page 83.