Tape Library Best Practices
Inherited a NBU 7.1 environment running on an old Sun box with an SL48 robot / four drive library. Looking to upgrade soon to a new server running RHEL 6.3 and NBU 7.5 with a new LTO 5 four drive library. Backups seem to run but, although the storage unit is configured with max concurrent write drives = 4 and max streams per drive = 8, multiple simultaneously running jobs write to a single drive, leaving the other three idle. Understand that a job may not be able to write to two drives simultaneously (maybe someone can confirm this). Policy Storage is set to Any_Available.
Part 2. I have a mix of Windows and Linux application, file, and database servers and need to shrink my backup times. What are some thoughts regarding four individual tape drives versus a four-drive library? I've run HP DP with individual drives and have had no problem running single jobs to multiple drives.