Problem: VOB server capacity
Disk I/O bottlenecks
- multiple read/write VOBs on one spindle
- Solution: segregate r/w VOBs among spindles, controllers
Main Memory
- Working set does not fit
- sar shows poor buffer cache hit rate (but beware of measuring file contents vs. metadata rates)
- Solution: add more memory
- Solution: add more server machines, move VOBs
- Solution: split VOBs with cleartool relocate