When you start Backup Server, you can use the -m parameter to improve the performance of the dump and load commands by configuring more shared memory for the Backup Server. The -m parameter specifies the maximum amount of shared memory used by the Backup Server. You must also configure your operating system to ensure that this amount of shared memory is available to the Backup Server. After a dump or load operation is completed, its shared memory segments are released.
Configuring more shared memory improves dump and load performance
only if the performance limits of the hardware setup have not been
reached. Increasing the value of -m may not result
in improved performance when dumping to a slow tape device such
as QIC, but it can improve performance significantly when dumping
to a faster device, such as DLT.
