The Menu Interface › Allocate New Dataset Parameters Menu (XCICADSN) › Parameter Fields › Block Size
Block Size
Defines the block size of the file.
- If RECFM=F, the LRECL must match the BLKSIZE parameter.
- If RECFM=FB, the BLKSIZE must be a multiple of the LRECL.
- If RECFM=U, CA XCOM Data Transport ignores this parameter.
- For F or FB data sets, allowable LRECL values are 4‑32760 bytes.
- For V and VB files, allowable values are 4‑32756 bytes.
- For FBA and VBM, allowable values are from 5‑32756 bytes.
- For V, VB, VBA and VBM files, the LRECL must be at least 4 bytes less than the BLKSIZE.
- For VBS and VS, allowable values are 256‑32767 bytes.
- For VS and VBS, the LRECL can be larger than the BLKSIZE.
Default: None
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