DFSMS: From Storage Tears to Storage Tiers
IBM Redbooks, Jun 6, 2016 - Computers - 18 pages
This IBM® RedpaperTM publication describes how class transitions differ from the classic migration processes and how they can influence application performance levels.
This paper applies to the IBM z/OS® V2.2 level.
&ACSENVIR ACS routine statements allocated application programs application’s Backup Versions Business applications CICS Class Transition Criteria class transition processing classic migration approach cold data configuration data between SSDs data movement DFSMS DFSMShsm Easy Tier device eligible for transition Enterprise disk Enterprise volumes external storage Fast Replication FlashCopy following Storage Groups frequently accessed Group selection heat map hot data IBM Redbooks publication International Business Machines lifecycle Management Class definitions Management Class MCSTMT45 MCDBHIST MCDBTMP MCHSTRC Metro Mirror primary Migrate to ML2 migration and recall move the data non-IBM products primary hierarchy project’s DB2 tables RPM disk drives sample programs Scenario 2 ACS Serialization Error Exit Serialization User Exit serialized and moved set can transition set is transitioned SGHIST shown in Figure shows the ACS Smart Tier SPMGCLTR SSD and Enterprise standard I/O statements for setting Storage Class storage controller storage management Storage Tier target volume Transition Copy Technique z/OS