Veritas Volume Manager 5.0.1 Administrator's Guide, HP-UX 11i v3, First Edition, November 2009

Note that adding parity increases the overall storage space that the volume
requires.
■ Change the number of columns in a volume.
Figure 1-29 shows an example of changing the number of columns.
Figure 1-29
Example of increasing the number of columns in a volume
Two columns Three columns
Note that the length of the columns is reduced to conserve the size of the volume.
■ Change the column stripe width in a volume.
Figure 1-30 shows an example of changing the column stripe width.
Figure 1-30
Example of increasing the stripe width for the columns in a volume
See “Performing online relayout” on page 340.
See “Permitted relayout transformations” on page 341.
Limitations of online relayout
Note the following limitations of online relayout:
■ Log plexes cannot be transformed.
■ Volume snapshots cannot be taken when there is an online relayout operation
running on the volume.
■ Online relayout cannot create a non-layered mirrored volume in a single step.
It always creates a layered mirrored volume even if you specify a non-layered
mirrored layout, such as mirror-stripe or mirror-concat. Use the vxassist
convert command to turn the layered mirrored volume that results from a
relayout into a non-layered volume.
See “Converting between layered and non-layered volumes” on page 347.
57Understanding Veritas Volume Manager
Online relayout