DFSMS: Extended Address VolumeThe rapid growth of big data and the storage of all that data is creating a critical problem for many organizations with IBM® z SystemsTM environments. This situation occurs because the data that is stored is using all of the addressable device storage that is available. This IBM RedpaperTM publication describes how extended addressable volume (EAV) for IBM 3390 Direct Access Storage Device (DASD) devices can solve the lack of addressable device storage space problem. The paper also describes the design points of EAV, the value of implementing EAV, and the use of EAV. |
Common terms and phrases
28-bit cylinder number 28-bit cylinder track 4-bit track number address volume EAV Alert Threshold allocated BreakPointValue buffer list CAMLST CCCCcccH command configured CVAFDIR macro CVAFDSM CVAFFILT CVAFSEQ cylinder track address cylinder-managed space DADSM DASD Data Compression data set types defined device number DEVTYPE DFSMS DFSMSdfp DFSMSdss DFSMShsm DFSORT dynamic volume expansion EADSCB=OK EAS eligible EAS-eligible data sets EATTR value EAV volumes EBCDIC ECKD environment EXCP EXPDATA EXPMSG extended address volumes extended attribute DSCBS extents FlashCopy format format-1 DSCB free space HyperPAV IBM Redbooks ICKDSF IDCAMS IGDSMSXX Implementation tips Implementing EAV includes the following input/output INTERNATIONAL BUSINESS MACHINES LSPACE macro moving data multicylinder unit non-EAV non-VSAM data set number of cylinders OBTAIN option Parallel Access Volumes parameter PAVs provides records space management specified Storage Group storage management subtasks SYSPLEX track-managed space Tracker Facility trademarks TRKADDR macro Update VSAM data sets VTOC index VVDS