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

See “Creating a striped-mirror volume”
on page 296.
See the vxassist(1M) manual page.
Creating striped-mirrors
See “Creating a concatenated-mirror volume”
on page 290.
See the vxassist(1M) manual page.
Creating concatenated-mirrors
See “Online relayout” on page 54.
See the vxassist(1M) manual page.
See the vxrelayout(1M) manual page.
Online Relayout
See the vxsd(1M) manual page.Moving RAID-5 subdisks
See “About volume snapshots” on page 351.
See the vxassist(1M) manual page.
See the vxsnap(1M) manual page.
Creating Snapshots
Online relayout
Note: You need a full license to use this feature.
Online relayout allows you to convert between storage layouts in VxVM, with
uninterrupted data access. Typically, you would do this to change the redundancy
or performance characteristics of a volume. VxVM adds redundancy to storage
either by duplicating the data (mirroring) or by adding parity (RAID-5).
Performance characteristics of storage in VxVM can be changed by changing the
striping parameters, which are the number of columns and the stripe width.
See “Performing online relayout” on page 340.
See “Converting between layered and non-layered volumes” on page 347.
How online relayout works
Online relayout allows you to change the storage layouts that you have already
created in place without disturbing data access. You can change the performance
characteristics of a particular layout to suit your changed requirements. You can
transform one layout to another by invoking a single command.
For example, if a striped layout with a 128KB stripe unit size is not providing
optimal performance, you can use relayout to change the stripe unit size.
Understanding Veritas Volume Manager
Online relayout
54