VERITAS Volume Manager 3.5 Administrator's Guide (September 2002)

Chapter 1, Understanding VERITAS Volume Manager

Online Relayout

Example of Decreasing the Number of Columns in a Volume

The following are examples of operations that you can perform using online relayout:

◆ Change a RAID-5 volume to a concatenated, striped, or layered volume (remove

parity). See “Example of Relayout of a RAID-5 Volume to a Striped Volume” below.

Note that removing parity (shown by the shaded area) decreases the overall storage

space that the volume requires.

Example of Relayout of a RAID-5 Volume to a Striped Volume

◆ Change a volume to a RAID-5 volume (add parity). See “Example of Relayout of a

Concatenated Volume to a RAID-5 Volume” below. Note that adding parity (shown

by the shaded area) increases the overall storage space that the volume requires.

Example of Relayout of a Concatenated Volume to a RAID-5 Volume

◆

Change the number of columns in a volume. See “Example of Increasing the Number

of Columns in a Volume” below. Note that the length of the columns is reduced to

conserve the size of the volume.

Example of Increasing the Number of Columns in a Volume

Five Columns Three Columns

Striped VolumeRAID-5 Volume

Concatenated

Volume

RAID-5 Volume

Three ColumnsTwo Columns