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453Using Storage Expert
Identifying configuration problems using Storage Expert
■ volumes needing recovery
See “Reattaching plexes” on page 231.
See “Starting a volume” on page 271.
See 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.
See “Converting between layered and non-layered volumes” on page 300.
Checking the number of columns in RAID-5 volumes
(vxse_raid5)
To check whether RAID-5 volumes have too few or too many columns, run rule
vxse_raid5.
By default, this rule assumes that a RAID-5 plex should have more than 4
columns and fewer than 8 columns.
See “Performing online relayout” on page 294.
Checking the stripe unit size of striped volumes
(vxse_stripes1)
By default, rule vxse_stripes1 reports a violation if a volume’s stripe unit size
is not set to an integer multiple of 8KB.
See “Performing online relayout” on page 294.