z/OS V1R6.0 DFSMS Access Method Services for Catalogs

DEFINE CLUSTERvvThe storage group to which these volumes belong is in the list of storagegroups selected by the ACS routines for this allocation.The data set is not a key range data set.The volume serial number is repeated in the list only if the KEYRANGEparameter is used. You can use this to have more than one key range on thesame volume. Repetition is valid when duplicate occurrences are used for theprimary allocation of some key range.If a VVDS is being defined, only one volume can be specified and that volumeserial number must be reflected in the name indicated in the NAME parameter.The VOLUMES parameter interacts with other DEFINE CLUSTER parameters.Ensure that the volume you give for the cluster is consistent with the cluster’sother attributes:vvCYLINDERS, KILOBYTES, MEGABYTES, RECORDS, TRACKS: The volumemust contain enough unallocated space to satisfy the component’s primaryspace requirement.FILE: The volume information supplied with the DD statement pointed toby FILE must be consistent with the information specified for the cluster andits components.Abbreviation: CYL, KB, MB, REC, TRKAbbreviation: VOLOptional ParametersACCOUNT(account_info)Defines up to 32 bytes of accounting information and user data for the dataset. It must be between 1 and 32 bytes, otherwise you will receive an errormessage.account_infoIs only supported for SMS-managed VSAM and non–VSAM data sets. It isonly used for the data set level (not member level) of PDSE/PDS.Abbreviation: ACCT||||||||||||||BUFFERSPACE(size)Specifies the minimum space for buffers. If BUFFERSPACE is not coded,VSAM attempts to get enough space to contain two data component controlintervals and, if the data is key-sequenced, one index component controlinterval.If the data set being defined is a KSDS, and the BUFFERSPACE specified is notlarge enough to contain two data and one index CIs, VSAM increases thespecified buffer space and completes the define. VSAM may also increaseindex CISIZE and, if necessary, increase the buffer space to accommodate thelarger index CISIZE.sizeThe space for buffers. Size can be given in decimal (n), hexadecimal (X'n'),or binary (B'n') form, but must not exceed 16776704.The BUFFERSPACE setting is ignored when the data set is opened forVSAM RLS or DFSMStvs mode.Chapter 14. DEFINE CLUSTER 151