IBM Support

MA46708 - LIC-DISK-STG-PERFM IMPLEMENT UNMAP FOR FLASHSYSTEM DISK
INITIALIZATION TO IMPROVE PERFORMANCE.

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 APAR (Authorized Program Analysis Report)

Abstract

LIC-DISK-STG-PERFM IMPLEMENT UNMAP FOR FLASHSYSTEM DISK
INITIALIZATION TO IMPROVE PERFORMANCE.

Error Description

Implementing disk unmap provides improvements in initialization
time and garbage collection performance on heavily allocated    
FlashSystem storage boxes.                                      

Problem Summary

Implementing disk unmap provides improvements in initialization
time and garbage collection performance on heavily allocated    
FlashSystem storage boxes.                                      

Problem Conclusion

Write Same with Unmap will be used during an add-to-ASP or other
dasd initialization, if supported by the FlashSystem box.      

Temporary Fix

Comments

Circumvention


PTFs Available

R720 MF64277 PTF Cover Letter   8032
R730 MF64278 PTF Cover Letter   8025

Affected Modules

         
         

Affected Publications

Summary Information

Status............................................ CLOSED PER
HIPER........................................... No
Component.................................. 9400DG300
Failing Module.......................... RCHMGR
Reported Release................... R720
Duplicate Of..............................




System i Support

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Document Information

Modified date:
17 March 2018