
372 IBM TotalStorage DS6000 Series: Performance Monitoring and Tuning
RMF terms, exposures) that have been used by a device, and whether the number of
exposures has changed during the reporting interval, which will be denoted by an asterisk
next to the PAV number.
RMF cache statistics are collected by volume and reported by volume and by LCU. To check
the status of the whole cache, you have to check the cache reports of all the LCUs defined on
the DS6000.
An Extent Pool, which is a new concept that comes with the DS6000, also has performance
statistics related to it.
10.9.2 Analyze the response time components
If a Service Level Agreement is not ...