About the Cache file volume list
|Article:HOWTO13863|||||Created: 2008-01-20|||||Updated: 2009-01-31|||||Article URL http://www.symantec.com/docs/HOWTO13863|
All backup jobs that require VSP snapshots place the VSP cache files in a volume that is listed in the Cache file volume list. If multiple volumes are listed, the volume with the most free disk space at backup time is the preferred location. If no volumes are listed, NetBackup determines the best location for VSP cache files.
The cache files are placed on a listed volume unless NetBackup determines that the volumes are undesirable as cache file locations. NetBackup may make this determination, even if a location is user-specified. A location is undesirable if a volume in the list is also targeted as a snapshot. Because VSP does not allow snapshots of the volumes that contain active cache files, NetBackup does not allow other VSP cache files to be placed in the volume.
Assume that a job backs up volumes C and D and needs to create VSP volume snapshots for the volumes. The Cache file volume list points to the C volume as the preferred location for all backups to place the VSP cache files.
The process is as follows:
NetBackup places the VSP cache files for the C and D snapshots in the C and D volumes. The C volume cannot be used as a preferred location for VSP snapshots since it is having a VSP snapshot created for it.
Article URL http://www.symantec.com/docs/HOWTO13863