About Linux buffer size and concurrent pipe usage

On the Linux x86_64 computers that host FT media servers, Symantec recommends that you use 20 or fewer pipes concurrently.

If you use more than 20 pipes, Symantec recommends that you configure the number of data buffers to a value less than 10. To do so, create (if necessary) the following file and include a single integer that specifies the number of pipes:

/usr/openv/netbackup/db/config/NUMBER_DATA_BUFFERS_FT

To prevent jobs from failing when they attempt to obtain resources: Symantec recommends that the number of buffers times the number of pipes be 322 or fewer.

For the number of buffers per pipe, the default value is 16 for disk and 12 for tape.