Starting Your Product › How to Configure Without CA CSM › Allocate the TMC and Audit Data Sets › Block Size Requirements

Block Size Requirements

The BLKSIZE for the Tape Management Catalog (TMC) must be 340 or a multiple of 340 greater or equal to 1020. A BLKSIZE of 680 is not valid. The BLKSIZE for the Audit data set must be a multiple of 370. When using a BLOCKSET audit data set there is a minimum BLKSIZE of 4440.

Note: For more information about space requirements for the TMC and Audit data sets, see the Programming Guide.

The following table is an example of block sizes and records per cylinder which can be used for the TMC and Audit data set on various devices.