Legato NetWorker ClientPak for MPE/iX Installation Guide

Configuring the MPE Client on the NetWorker Server
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backup images of any files that are changed during the backup. If you don’t set
this system variable, the shadow logs are saved to the MPE volume set of the
file that NetWorker and TurboSTORE are backing up currently. If you decide
not to save the shadow log to a different volume set, then make sure that you
have enough space on the volume set to which you are backing up.
Important: You must not include the NetWorker-expected tag,
“_VOLUME_SET”, for nonsystem volume sets.
To store temporary shadow logs on a separate MPE volume set named
SHADOW_LOG, enter the following system variable to the JNSRSTRT file:
!SETVAR NSR_MPE_ONLINE_SAVE_LOGVOLSET "SHADOW_LOG"
Turning Off Parallel Backups
Setting the system variable NSR_MPE_SCHED_SAVES_PARALLELISM_OFF
to any value, including null, turns off any parallelism of server-initiated
backups. Backups that are scheduled to run at the same time as defined in the
client resource on the NetWorker server will run sequentially.
This variable is useful when the host and its I/O are unable to gracefully
sustain more than one volume-set-based save at the same time. Note that
parallelism can also be turned off by setting the "parallelism" attribute of the
client resource to "1" (refer to the Legato NetWorker Administrator’s Guide).
To turn parallelism of server-initiated backups off, add the following system
variable to the JNSRSTRT file:
!SETVAR NSR_MPE_SCHED_SAVES_PARALLELISM_OFF ""
Note that if you set this variable to "no", parallelism will still be turned off.