VERITAS Volume Manager 4.1 Administrator's Guide

Understanding VERITAS Volume Manager

Volume Layouts in VxVM

Chapter 1 27

The ﬁgure, “Mirrored-Stripe Volume Laid out on Six Disks,” shows an

example where two plexes, each striped across three disks, are attached

as mirrors to the same volume to create a mirrored-stripe volume.

Figure 1-18 Mirrored-Stripe Volume Laid out on Six Disks

See “Creating a Mirrored-Stripe Volume” on page 248 for information on

how to create a mirrored-stripe volume.

The layout type of the data plexes in a mirror can be concatenated or

striped. Even if only one is striped, the volume is still termed a

mirrored-stripe volume. If they are all concatenated, the volume is

termed a mirrored-concatenated volume.

Mirroring Plus Striping (Striped-Mirror, RAID-1+0 or

RAID-10)

NOTE You may need an additional license to use this feature.

VxVM supports the combination of striping above mirroring. This

combined layout is called a striped-mirror layout. Putting mirroring

below striping mirrors each column of the stripe. If there are multiple

subdisks per column, each subdisk can be mirrored individually instead

of each column.

Striped Plex

Mirror

Mirrored-Stripe

Volume

Column 1 Column 2 Column 3