Difference between revisions of "Information Systems:Analyzing disk usage on Bart"
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=Overview= |
=Overview= |
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| − | It should be a habit to reassess disk usage on Bart every once in a while. It helps to understand storage from a big-picture standpoint: large tables in our ERP, stale temporary files, IFS folders with accumulating log files etc. This article documents the different methods and tools that can help in such an analysis. |
+ | It should be a habit to reassess disk usage on Bart every once in a while. It helps to understand storage from a big-picture standpoint: large tables in our ERP, stale temporary files, IFS folders with accumulating log files etc. This article documents the different methods and tools that can help in such an analysis. According to IBM, these are some limits we should be aware of: |
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| + | =Tools= |
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| + | ====RTVDSKINF==== |
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| + | Retrieve Disk Info. |
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| + | ====ANZLIBBRM==== |
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| + | Note: Run RTVDSKINF before running this tool! |
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=Observations and other notes= |
=Observations and other notes= |
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Revision as of 12:21, 1 June 2017
Overview
It should be a habit to reassess disk usage on Bart every once in a while. It helps to understand storage from a big-picture standpoint: large tables in our ERP, stale temporary files, IFS folders with accumulating log files etc. This article documents the different methods and tools that can help in such an analysis. According to IBM, these are some limits we should be aware of:
Tools
RTVDSKINF
Retrieve Disk Info.
ANZLIBBRM
Note: Run RTVDSKINF before running this tool!
Observations and other notes
For the same BRMS job (or more accurately, for the same list of objects specified by the job to be saved), certain steps seem to take longer for no apparent reason. One possible theory however, is that on fresh media (monthly tapes), writing is faster than on recycled media (daily tapes).
5/31/17 3:42:21 2 blocks processed for sequence 147, volume 000015, on de 5/31/17 4:09:01 341 objects saved from library CVT454AP.
6/01/17 3:40:44 2 blocks processed for sequence 147, volume 001804, on de 6/01/17 3:47:46 341 objects saved from library CVT454AP.