Dell PowerVault 775N (Rackmount NAS Appliance) - Manual (Page 79)

8. Select the retention weight.
9. Click OK to update the persistent image.
Scheduling Persistent Images
When you click from the NAS Manager primary menu Disks ® ActiveArchive® Schedules, the Scheduled Persistent
Image page displays a list of all scheduled persistent images and associated tasks. Each scheduled persistent image is
identified by the scheduled time, day, frequency, starting date, and target volume ID. Persistent images identified by time
and date are located in the ActiveArchive directory. The ActiveArchive directory is located in the root of each ActiveArchive
volume. Only the administrator can access the ActiveArchive directory. The files and folders in the persistent image
directories have the same permissions as the files and folders on the original volume. Persistent image directories are used
exactly the same way as conventional system volumes. Unlike conventional volumes, read-only persistent image images are
static, recording the precise content of the originating volume at the time you created the persistent image.
NOTE: In a cluster environment, persistent image schedules do not fail over. However, the schedule still attempts to
take persistent images on the node where the schedule was set. As a result, you may receive errors indicating that the
persistent images could not be taken.
Displaying the List of Persistent Images
The Persistent Images page displays all currently active persistent images. Each entry identifies the date and time that the
persistent image was created and the volume it preserves. Select an individual persistent image by clicking the radio button
to the left of the description.
1. Log in to the NAS Manager.
2. Click Disks.
3. Click ActiveArchive.
4. Click Persistent Images.
Adding Persistent Images to the Schedule
1. Log in to the NAS Manager.
2. Click Disks.
3. Click ActiveArchive.
4. Click Schedules.
5. In the Tasks list on the Persistent Image Schedules page, click New.
6. Use the menus to select the start time (Start at), the frequency at which to repeat the persistent image (Repeat
every), the day to begin (Begin), the volume(s) to include, the image attributes (Read-only or Read/Write), the
retention weight, number of images to save (per schedule), and the persistent image name.
NOTE: To select multiple volumes, press and hold <Ctrl> and select all volumes that are to be included in the
persistent image.
NOTE: If volumes are not protected by RAID 1 or RAID 5, or if volumes are frequently being added and removed,
it is recommended that you make persistent images of individual volumes. Because multivolume persistent
images are linked to each other, a multivolume persistent image may become inaccessible if one volume in the
multivolume persistent image fails or is removed from the system.
You can use patterns in the persistent image name to differentiate your persistent images. For example if you use a