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Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide
DT_SUPPORT
NODT_SUPPORT
Specifies if disaster tolerant functionality is enabled on this mirrorset. If some
members are or may be remote and disaster tolerant functionality is supported, set
DT_SUPPORT. If all members are—and intend to remain—local and disaster tolerant
functionality is not supported, set NODT_SUPPORT.
If DT_SUPPORT is enabled, the mirrorset has the following restrictions: NOPOLICY
is enforced and NOWRITEBACK_CACHE is enforced.
If NODT_SUPPORT is enabled and any of the members have REMOTE set, then the
command will fail with an error.
NOTE: This command will fail if changing the setting while the mirrorset is in use
by a higher level.
MEMBERSHIP=number-of-members
Sets the nominal number of mirrorset members to the number you specify for the
number-of-members value. A maximum of six members can be specified.
NOTE: No other switches can be set when you specify the MEMBERSHIP switch.
If you increase the number of members and specify a replacement policy with the
POLICY switch, the controller automatically adds disk drives from the spareset to the
mirrorset until the new number of members is reached, or there are no more suitable
disk drives in the spareset.
If you increase the number of members and the NOPOLICY switch is specified—it
will be specified if DT_SUPPORT is enabled—the REPLACE=disk-name switch
must be specified to bring the mirrorset up to the new nominal number of members.
You cannot set the nominal number of members lower than the actual number of
members. Specify the REMOVE switch to reduce the number of disk drives from the
mirrorset.