IBM totalstorage 326, User Reference

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Disaster Recovery
Each of these tasks are described in the following sections. More detailed
descriptions and instructions for each of the control panels and topics are covered
in the online help.
Global Settings
On this panel, you can configure the persistent image system attributes shown in
Table 4.
Table 4. Persistent image global settings
Attribute Default value
Maximum number of persistent images 250
Inactive period 5 seconds
Inactive period wait timeout 15 minutes
Volume Settings
This panel displays statistics for each volume, such as total volume capacity, free
space, and cache file size and usage. You can also select any volume and
configure volume-specific PSM attributes for that volume, as shown in Table 5.
Table 5. Persistent image volume settings
Attribute Default value
Cache-full warning threshold 80 percent full
Cache-full persistent image deletion threshold 90 percent full
Cache size 15 percent (of the total volume
capacity)
Note: You cannot change the cache size for a volume while there are persistent
images on that volume (the Cache size combo box will be disabled). You
must delete all persistent images on the volume before changing the cache
size for that volume.
Persistent Images
This panel lists all of the persistent images that exist on all volumes. On this panel
you can:
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Create a new persistent image immediately (without scheduling it through the
Schedules panel). When you create the persistent image, you can specify
properties for the persistent image, including:
Volume(s) The persistent image can contain a single
volume or multiple volumes. To select multiple
volumes, hold down the
Ctrl key while clicking
the volumes. For multi-volume persistent images,
a virtual directory containing data for a volume
appears under the persistent image directory in
the top level of each volume in the persistent
image (the name of the persistent image
directory is configured in the Global Settings
panel).
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Model 326 User’s Reference