From: Holger.VanKoll@SWISSCOM.COM
Date: Thu Jan 23 2003 - 03:23:08 EST
>I've heard it said since the AIX 4.3.2 days that you
could safely mirror your dump device.
Yes, if its a paging space.
If not, you can mirror it, but the mirror wont be used in case of a
dump.
Dont mirror it. On the space you save, create a 2nd dump device. Then
you will get a dump if a disk failed.
>From man mirrorvg
rootvg and non-rootvg mirroring The system dump devices, primary and
secondary,
should not be mirrored. In some systems, the paging device and the dump
device
are the same device. However, most users want the paging device
mirrored. When
mirrorvg detects that a dump device and the paging device are the same,
the
logical volume will be mirrored automatically.
If mirrorvg detects that the dump and paging device are different
logical
volumes, the paging device is automatically mirrored, but the dump
logical
volume is not. The dump device can be queried and modified with the
sysdumpdev
command.
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