RMAN to disk from ASM

[rickelf]

We want to backup ASM storage to a TSM diskpool using RMAN.
Configuration of TSM has a managementclass pointing to a diskpool etc.
Oracle controlfiles and sp-files are backupped to that diskpool by RMAN. Datafiles are written to tape however.
What to check? What to do? Thanks.

 

[moon-buddy]

We want to backup ASM storage to a TSM diskpool using RMAN.
Configuration of TSM has a managementclass pointing to a diskpool etc.
Oracle controlfiles and sp-files are backupped to that diskpool by RMAN. Datafiles are written to tape however.
What to check? What to do? Thanks.

Do you have enough space on the disk pool? Does the disk pool have a next storage pool parameter?

If space on the disk pool is insufficient, TSM will use the next defined storage pool. If there is no next storage pool, the backup fails.

 

[rickelf]

Thanks. We tested this with database and tablespace backups. RMAN estimates a backup-size bigger than the hi migration limit and next storage pool (tape) is used.
So although actual size of backup is under the hi migration limit TSM is still using the tape-pool.

 

[moon-buddy]

Thanks. We tested this with database and tablespace backups. RMAN estimates a backup-size bigger than the hi migration limit and next storage pool (tape) is used.
So although actual size of backup is under the hi migration limit TSM is still using the tape-pool.

What you can do is increase the disk pool size (2x of the total estimates, if you can), and set hi=100, lo=99