Reallocation of volumes

Hi there,

Veritas apparently uses a technique in order to perform smooth backup.
AFAIK, the goal is to create on a Volume Manager (LVM has been tested successfully), two mirrored volumes (soft RAID1). Of course, everything is on a SAN.
Everything runs like that during normal operation. When backup starts, their agent, based on shell script, breaks the mirror, desallocates somehow one of mirrored voume. When mirror is broken, one of the volume is picked up by from another server which then can be backup without problem (no open files, can have large backup window's size, etc..).
When backup is over, the volume is removed from the local LVM and reinserted in the original server.
Mirror is then resynchronised... 

My question is : is it possible, with evms (we have SLES9 with evms installed and XFS file system on SAN) to to dynamically remove a volume from
a storage container then add it into another storage container on another server , and the other way around ?
Does somebody tried this Veritas feature with evms ?

many thanks for your help

Francois



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