VERITAS Volume Manager for UNIX: Operations
Lesson 3 Managing Disks and Disk Groups
Overview
Managing Disks and Disk Groups
Creating Volumes
Configuring Volumes
Virtual Objects
Installation and Interfaces
Reconfiguring Volumes Online
Recovery Essentials
Encapsulation and Rootability
Objectives
pleting this lesson, you will be able to:
Describe the features and benefits of the two device-naming schemes: traditional and enclosure-based naming.
Identify the stages of VxVM disk configuration.
Create a disk group by using VEA mand line utilities.
View disk and disk group information and identify disk status.
Manage disks, including adding a disk to a VxVM disk group, removing a disk from a disk group, changing the disk media name, and moving an empty disk from one disk group to another.
Manage disk groups, including deporting and importing a disk group, moving a disk group, renaming a disk group, destroying a disk group, and upgrading the disk group version.
Traditional Device Naming
Traditional device naming in VxVM is:
Operating system-dependent
Based on physical connectivity information
Examples:
Solaris: /dev/[r]dsk/c1t9d0s2
HP-UX: /dev/[r]dsk/c3t2d0 (no slice)
AIX: /dev/hdisk2
Linux: /dev/sda, /dev/hda
Enclosure-Based Naming
Enclosure-based naming:
Is OS-independent
Is based on the logical name of the enclosure
Can be customized to make names meaningful
Host
Fibre Channel Switches
c1
c2
englab0
englab2
englab1
Disk Enclosures
Selecting a Naming Scheme
You can select a naming scheme:
When you run VxVM installation scripts
Anytime using the vxdiskadm option, “Change the disk naming scheme”
Note: This operation requires the VxVM configuration daemon, vxconfigd, to be stopped and restarted.
If you select enclosure-based naming, disks are displayed in
three categories:
Enclosures: Supported RAID disk arrays are displayed in the enclosurename_# format.
Disks: Supported JBOD disk arrays are displayed with the prefix Disk_.
Others: Disks tha
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