Symantec NETBACKUP 7 - Manual (Page 51)

Table 5-2 Media server deduplication pool properties (continued)
Description Property
For a media server deduplication pool, all disk storage is exposed
as a single volume.
PureDiskVolume is a virtual name for the storage that is
contained within the directories you specified for the storage path
and the database path.
Disk volume
The amount of space available in the disk pool. Available space
The total raw size of the storage in the disk pool. Raw size
A comment that is associated with the disk pool. Comment
The high water mark is a threshold that indicates the
PureDiskVolume is full. When the PureDiskVolume is at the
high water mark, NetBackup fails any backup jobs that are
assigned to the disk pool storage unit.
NetBackup also fails backup jobs if the PureDiskVolume does not
contain enough storage for its estimated space requirement.
NetBackup again assigns jobs to the storage unit when the capacity
of the PureDiskVolume drops below the high water mark. Capacity
is regained as backup images expire.
NetBackupdoes not assign backup jobs to the disk pool if used
space in the PureDiskVolume is greater than the high water mark.
The default is 98%.
High water mark
The low water mark has no affect on the PureDiskVolume.
The low water mark setting cannot be greater than or equal to the
high water mark setting.
The default is 80%
Low water mark
51 Configuring deduplication
Configuring a deduplication pool