DMF - Capacity and Performance
Number of files is determined by file system
- Typical site -- 1M files
- Largest site today -- 5M files
- Largest tested capacity -- 20M files
- Practical issue -- inode space and database processing time
Offline capacity is unlimited
- Typical site -- 5 to 50TB
- Largest site today -- 750TB ( and counting )
- Practical issue -- media density
Data rates
- Tunable media transport usage -- read/write
- Full, rated channel speeds -- async i/o
- Parallel writes/parallel reads
- Busiest site -- 7 to 10 TB/day
- Practical issue -- balance between disk channels and tape channels