4.0.0 HP Polyserve Matrix Server Administration Guide (T5392-96052, March 2010)

• The subdevices used for a striped dynamic volume should be the same size. The
Volume Manager uses the same amount of space on each subdevice in the
stripeset. When a striped dynamic volume is created, the Volume Manager de-
termines the size of the smallest specified subdevice and then uses only that
amount of space on each subdevice. If the subdevices are different sizes, the
additional space on the larger subdevices will be wasted.
This limitation also applies when a striped dynamic volume is extended. The newly
added subdevices constitute a new stripeset. The size of the smallest subdevice
determines the amount of space that will be used on each of the subdevices.
• In general, the stripe size should be set to 2 MB or greater, and, for many disk
arrays, disk partitions should be aligned on block boundaries (see “Disk partition
alignment” on page 73).
Create a dynamic volume
When you create a dynamic volume, you will need to select the subdevices to be
included in the volume. If the volume will be striped, you will also need to select a
stripe size. Optionally, Matrix Server can also create a filesystem that will be placed
on the dynamic volume.
To create a dynamic volume from the Management Console, use one of the following
methods:
• From the Storage menu, select Dynamic Volume > Create Volume
• Select Matrix > Add > Add Dynamic Volume
• Click Volume on the toolbar.
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