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Dell ActiveArchive allows the creation and preservation of persistent images of Dell PowerVault™ 750N and 755N system data volumes. The Dell ActiveArchive software is installed on all PowerVault 75xN systems. It can be configured by using the NAS Manager.

This chapter provides information on the following topics:

Introduction to persistent images

Scheduling persistent images

Adding persistent images to the schedule

Deleting a persistent image schedule

Editing the properties of a persistent image’s schedule

Taking a new persistent image

Deleting a persistent image

Configuring the persistent image environment

Setting persistent image retention weights

Accessing persistent images

Restoring a volume

Introduction to Persistent Images

Apersistent image is a point-in-time copy of a disk volume. Unlike conventional volumes, the information in the persistent image is static. A persistent image contains an exact copy of the file system at the time the persistent image was created. If you change a file on the active file system after taking a persistent image, the persistent image contains the old version of the file. If an active file gets corrupted or deleted, you can restore the old version by copying the file from the latest persistent image. Also, because the persistent image contains the contents of the file system when the persistent image was taken, you can perform a backup from the persistent image without stopping all I/O to the file servers, thus eliminating the backup window required by other types of backup.

NOTE: Persistent images are temporary backups of your data that reside on the same volume as your data. If the volume becomes damaged, you lose your data including the persistent image. Therefore, persistent images do not replace regular backups of your volume.

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Dell ActiveArchive™

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Dell 750N. 755N manual Introduction to Persistent Images