Veritas Volume Manager 4.1 Administrator's Guide (HP-UX 11i v3, February 2007)

Identifying Configuration Problems Using Storage Expert
390 VERITAS Volume Manager Administrator’s Guide
Checking States of Plexes and Volumes (vxse_volplex)
To check whether your disk groups contain unused objects (such as plexes and volumes),
run rule vxse_volplex. In particular, this rule notifies you if any of the following
conditions exist:
◆ disabled plexes
◆ detached plexes
◆ stopped volumes
◆ disabled volumes
◆ disabled logs
◆ failed plexes
◆ volumes needing recovery
If any of these conditions exist, see the following for information on correcting the
situation:
◆ To re-enable a disabled or detached plex, see “Reattaching Plexes” on page 191.
◆ To re-enable a stopped or disabled volume, see “Starting a Volume” on page 231.
◆ To recover a volume, see the chapter “Recovery from Hardware Failure” in the
VERITAS Volume Manager Troubleshooting Guide.
Disk Striping
Striping enables you to enhance your system’s performance. Several rules enable you to
monitor important parameters such as the number of columns in a stripe plex or RAID-5
plex, and the stripe unit size of the columns.
Checking the Configuration of Large Mirrored-Stripe Volumes
(vxse_mirstripe)
To check whether large mirror-striped volumes should be reconfigured as striped-mirror
volumes, run rule vxse_mirstripe.
A large mirrored-striped volume should be reconfigured, using relayout, as a
striped-mirror volume to improve redundancy and enhance recovery time after failure.
To convert a mirrored-striped volume to a striped-mirror volume, see “Converting
Between Layered and Non-Layered Volumes” on page 260.