Has anyone done any analysis on compression rates? We compress at the tape drive level as most do, and have several Oracle DBs that backup LAN-Free. For Oracle data that backs up to disk (smaller DBs and archive logs) we compress at the TSM client level.
Oracle can do the compression with the following command:
BACKUP AS COMPRESSED BACKUPSET DATABASE
For LAN-Free, the tape drive would not compress further if the client is doing it, but how does RMAN compression compare with tape drive compression? (LTO-4)
For our smaller DBs and archive logs going over the LAN to disk, how does RMAN compression compare to TSM client compression?
Oracle can do the compression with the following command:
BACKUP AS COMPRESSED BACKUPSET DATABASE
For LAN-Free, the tape drive would not compress further if the client is doing it, but how does RMAN compression compare with tape drive compression? (LTO-4)
For our smaller DBs and archive logs going over the LAN to disk, how does RMAN compression compare to TSM client compression?