Dell PowerVault 750N, Руководство системного администратора

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Dell ActiveArchive™
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Configuring the Persistent Image Global Settings
You can use drop-down menus to modify the various aspects of the persistent image
environment.
1
On the NAS Manager primary menu, click Disks , and then click ActiveArchive .
2
Click Global Settings and configure the following options .
NOTE:
Before changing the
Image Directory Name
, you must delete all existing persistent
images.
• Maximum Persistent Images — Specifies the maximum number of active
persistent images per volume, up to a maximum of 250. When the volume has
250 persistent images stored, starting another persistent image will overwrite the
oldest persistent image with the lowest retention weight.
• Inactive Period — Prior to starting a persistent image, the system waits for a
period of relative inactivity on the volume being imaged. The default value for this
period, which is five seconds, allows systems to start an image with a consistent
file set and a minimal time-out. Experienced administrators may reduce or
increase this value for system optimization. Reducing the inactive period allows
persistent images to begin on systems where disk inactivity is rare, at the possible
expense of synchronization problems within applications that are concurrently
writing to multiple files.
• Inactive Time-Out — Specifies the amount of time the server should continue to
retry to create a persistent image (default 15 minutes). A persistent image will not
start until a period of relative inactivity, specified by the Inactive Period , occurs. If
an interval longer than Inactive Time-Out passes before the persistent image can
begin, the persistent image will not be taken and an error will be displayed in the
NAS Manager status indicator and an error will be logged in the event log.
• Image Directory Name — Specifies the directory name which will be used for the
persistent image mount point. Each persistent image appears as a subdirectory in
the volume which is being imaged. The entire content of the volume, as it existed
when the persistent image was created, appears under this directory.
Restore Defaults reestablishes the system defaults.
Configuring Persistent Image Volume Settings
You can use drop-down menus to modify volume settings.
1
On the NAS Manager primary menu, click Disks and then click ActiveArchive .
2
Click Volume Settings .