Number Of Processors Affect Performance - IBM 170 Servers Manual

15.10 Number of Processors Affect Performance

With the Large Database File workload, it is possible to fully feed two backup devices with a single
processor, but with the User Mix workload it takes 1+ processors to fully feed a backup device. A
recommendation might be 1 and 1/3 processors for each backup device you want to feed with User Mix
data.
500
490
480
470
460
GB/HR
450
440
430
420
200
150
100
GB/HR
50
0
IBM i 6.1 Performance Capabilities Reference - January/April/October 2008
©
Copyright IBM Corp. 2008
.1 Processor to 2 Processors Backup Operations
(Large File Workload) to Ultrium 3 Tape
520 2 way 16GB Memory 60 Dasd
Save
Operation
.1 Processor to 2 Processors Backup Operations
(User Mix Workload) to Ultrium 3 Tape
520 2 way 16GB Memory 60 Dasd
Save
Operation
Chapter 15. Save/Restore Performance
Restore
Restore
.1 Processor
.2 Processor
.3 Processor
.5 Processor
1.0 Processor
2.0 Processors
.1 Processor
.2 Processor
.3 Processor
.5 Processor
1.0 Processor
2.0 Processors
253