Specifies how many tape I/O buffers the server can use to write to or read from tape media. The default is 1.
Note: | The server determines the value based on settings for the TXNBYTELIMIT client
option and the MOVEBATCHSIZE, MOVESIZETHRESH, TXNGROUPMAX, AND USELARGEBUFFERS
server options. the server uses the maximum number of buffers it can
fill before reaching the end of the data transfer buffer or the end of the
transaction. A larger number of I/O buffers may increase I/O throughput
but require more memory. The memory required is determined by the
following formula:
number_of_buffers x 32K x mount limit |
Syntax
>>-TAPEIOBUFS--number_of_buffers-------------------------------><
Parameters
Examples
Specify that the server can use up to 9 buffers to overlap the I/O with BSAM:
tapeiobufs 9