Volume Pool
Hello Experts,
We have many volume pools say rman, sql, flatfiles, 1Month, 1 year etc and these have diferent retention.
Muliplexing setting is enabled and allow multiple retention is disabled.
My query is suppose one rman pool tape is with 1 month retention is writing on the drive and it has only one job writing suppose we fire backup from another pool i.e sql poll with same 1 month retention. Would this Rman pool tape include the sql job as well????
Because situation is similiar both jobs are with same retention and tape in the drive is also with 1 month retention....so both should be merged into one drive. as also there is mulitiplexing ???
Pls suggest..
>> My query is suppose one rman pool tape is with 1 month retention is writing on the drive and it has only one job writing suppose we fire backup from another pool i.e sql poll with same 1 month retention. Would this Rman pool tape include the sql job as well????
No, if the policies use different pools, they will take a tape from those pools. So backup job with 'rman' pool selected takes a tape from that and backup job with 'sql' pool takes a different tape from that pool.
The only way to get them to share media is to use the same pool name for both backup policies and same retenton.
Backup streams can MPX (we exclude policy settings right now) if volume pool and retention is the same.
Having multiple volume pools and retenions is expensive becuase it prevent effective MPX operation.
In general I recommend ONE volume pool and as few retensions as possible. It does not matter diffrent type of data are on the same tape and its very rare using multiple volume pool add any value.
As per above replies - a tape can only be in one pool.
Multiple backups can only go to the same tape in MPX backup if ALL requirements match:Media server (STU)
Volume pool
Retention
MPX settings in schedule.You create multiple volume pools because you want to keep data separate for some or other reason.
This is not a NBU requirement.You may want to go through this TN that explains how NBU selects media:
How NetBackup selects media
(Also documented in NetBackup Administrator's Guide, Volume II )
