make netbackup write to new media
Netbackup 7.1 Enterprise.
I have volume pool with 24 volumes. Type of backup is oracle. rman starts 8 streams. So it fullfill firs 8 volume,
and continue to write to second 8 media. and small part of backup is leaving on second part of 8 media. it has retention period 10 days.
and frequency is 1 week. So after week backup policy executes, and it continue to write on used media. That is also normal behavior of netbackup.
so it fullfill second 8 media and writes small ( but bigger then first time small part on first 8 volumes ) part of backup on third 8 volumes.
So after 3 days of second backup , retention period of first backup is over and first 8 volumes wholy expired, and the small part of that expired backup on second 8 volume also expired. but because it writes linear I cant use that space until whole volume expired.
For first look it seems that is just small area, but after several cycle of backup it became like because of some little data on volume I am wasting
other big part of volume, and waiting for its expiration ..
Thats why I want netbackup to write on new media when it starts policy.
If it is possible I would give 16 volume ( with enough size) to this policy , not 24.
lets say it writes to first 8 volume. and that is ok if some small area leaves there empty.
and after week it starts to write to new media.after 3 days of this backup first 8 volume would be expired ..
Is it possible ??? or is there any way not to waste space on volumes. .. ???