IBM System Storage DS3000, Programming Manual

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Notes
You can use any combination of alphanumeric characters, underscore (_), hyphen (-), and pound (#) for
the names. Names can have a maximum of 30 characters.
When you use this command, you can specify one or more of the parameters. You do not, however, need
to use all of the parameters.
An Enhanced Global Mirror Group repository volume is an expandable volume that is structured as a
concatenated collection of up to 16 standard volume entities. Initially, an expandable repository volume
has only a single volume. The capacity of the expandable repository volume is exactly that of the single
volume. You can increase the capacity of an expandable repository volume by attaching additional
unused repository volumes to it. The composite expandable repository volume capacity then becomes the
sum of the capacities of all of the concatenated standard volumes.
To increase the capacity of a repository volume use the set enhancedGlobalMirrorGroup command as
shown in this example:
set enhancedGlobalMirrorGroup ["amg_001"] volume="repos_006"
increaseRepositoryCapacity
repositoryVolumes=("repos_0021" "repos_0021");
An Enhanced Global Mirror Group repository volume must satisfy a minimum capacity requirement that
is the sum of the following:
v
32 MB to support fixed overhead for the Enhanced Global Mirror Group and for copy-on-write
processing. [comment: should the text in these two bullets be in blue?]
v
Capacity for rollback processing, which is 1/5000th of the capacity of the base volume.
The minimum capacity is enforced by the controller firmware and the storage management software.
Minimum Firmware Level
7.84
Set Consistency Group Attributes
This command defines the properties for an Enhanced FlashCopy consistency group.
Syntax
set consistencyGroup ["consistencyGroupName"]
[userLabel="consistencyGroupName" |
repositoryFullPolicy=(failBaseWrites | purgeEnhancedFlashCopyImages)|
repositoryFullLimit=percentValue|
autoDeleteLimit=numberOfEnhancedFlashCopyImages|
rollbackPriority=(lowest | low | medium | high | highest)]
Parameters
Parameter Description
consistencyGroupName The name of the consistency group for which you are
setting properties. Enclose the consistency group name in
double quotation marks (" ") inside square brackets ([ ]).
userLabel The new name that you want to give to the Enhanced
FlashCopy consistency group. Enclose the new
consistency group name in double quotation marks (" ").
Chapter 3. Script Commands
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