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Over the history of the BRMS product life, PTFs and functional changes for all of these areas have occurred. Specific volume statistic information in BRMS is dependent upon fix level in these areas on your system and device, and BRMS usage. Application of a PTF or fix in any of these areas does not change past statistical data in the BRMS DB or the PAL. It is recommended that BRMS users routinely maintain the system and devices, by applying the latest fixes available and practice good BRMS usage.
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Specific volume statistic information in BRMS may not be correct if fixes are not applied to the system or BRMS functions are not properly used at the time a volume is used. Specific volume statistic information in BRMS DB for a past save is not changed by the application of a PTF. |
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The proper use of volume statistical information is to identify when a volume is reaching end of useful life or a bad section on the tape has been encountered. The statistics should be used as an indicator to determine when acceptable read or write error rates are being exceeded. |
NOTE: When using non-IBM tape drives or Virtual Tape Libraries (VTLs) , there is no guarantee any of the statistics collected are correct.