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15.14 Concurrent Virtual Tapes
NOTE: Virtual tape is reading and writing to the same DASD so the maximum throughput with our
concurrent and parallel measurements is different than our tape drive tests where we were reading from
DASD and writing to tape.
IBM i 6.1 Performance Capabilities Reference - January/April 2008
© Copyright IBM Corp. 2008 Chapter 15. Save/Restore Performance 258
0
500
1000
1500
2000
2500
3000
3500
GB/HR
Save Restore
Operation
Concurrent Virtual Tape for Large File
570 16 way 128GB Memory
800 DASD units for Virtual Tape Drives
1 Virtual Tape Device
2 Virtual Tape Devices
3 Virtual Tape Devices
4 Virtual Tape Devices
5 Virtual Tape Devices
0
200
400
600
800
1000
GB/HR
Save Restore
Operation
Concurrent Virtual Tape for User Mix
570 16 way 128GB Memory
800 DASD units for Virtual Tape Drives
1 Virtual Tape Device
2 Virtual Tape Devices
3 Virtual Tape Devices
4 Virtual Tape Devices
5 Virtual Tape Devices