cpio_in_flags 

Default value: -iuvB

Required value: Flags for cpio commands that the SAP utilities use for reading files from a volume.

The option B causes a block size of 5KB to be used. You can also use a higher block size (if cpio permits this for your hardware platform), to increase performance when writing to tape.

The block size in cpio_flags and cpio_in_flags must match.