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Performance will be limited to the native drive rates (shown in table 15.1.1) because encrypted data
blocks have a very low compaction ratio.
IBM i 6.1 Performance Capabilities Reference - January/April 2008
© Copyright IBM Corp. 2008 Chapter 15. Save/Restore Performance 264
Tape Backup Performance - Restores
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50
100
150
200
250
300
1 GB Source File 12 GB User Mix 64 GB Large File 320 GB Large File
GB/HR
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CPU Utilization during Restores
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10
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1 GB Source File 12 GB User Mix 64 GB Large File 320 GB Large File
%CPU Used
9406-MMA-4way %CPU Used Encrypted ASP RSTLIBBRM NO Softw are Encryption
9406-MMA-4way %CPU Used Encrypted ASP RSTLIBBRM With Softw are Encryption
9406-MMA-4way %CPU Used NON Encrypted ASP RSTLIBBRM NO Software Encryption
9406-MMA-4way %CPU Used NON Encrypted ASP RSTLIBBRM With Softw are Encryption
9406-570-4w ay %CPU Used NON Encrypted ASP RSTLIBBRM NO Softw are Encryption
9406-570-4w ay %CPU Used NON Encrypted ASP RSTLIBBRM With Softw are Encryption