8Storage Management with DB2 for OS/390
volumes,closing it on volumes to be removed), and finallyrem ovingthe volumes
you want to excludefrom the S torageGroup. All those functions can be
accomplished while the data is on line. Data sets that were unmovable,
never-closed,or never reallocated could be moved using remote copy
techniques, then, aftera shor t outage,the critical application can be switched
onto the new volumes.
2.2.6 PerformanceManagement
Monitoring I/O performance of DB2 requires also teamwork between DB2 and
storageadm inistratorsto adopt a common approach with tools of both disciplines
in analyzing performance situations.Performance monitoring should be done at
the Storage Group levelto have a consistent action.