Hello Team,

We have two mailbox servers configured in our envoirnemt, both the clients have been added to the group exchange_bkp. However after first successful completion of backup , on the second run backup fialed with the following error:

79248:nsrsnap:Ignoring unrecognized option 'q', use '-?' to see usage

92347:nsrsnap:***************** Snapshot Management operation has started, logging to "C:\Program Files\EMC NetWorker\nsr\logs\nwsnap.raw" *****************02/14/17 22:00:26.023559 [nsr/save/nsrsnap.c 611] Calling nsrrm_host

02/14/17 22:00:26.054811 [nsr/save/nsrsnap.c 886] Calling get_pool_name..

52051:nsrsnap:Printing savecmd=nsrsnap_vss_save after parsing

nsrsnapck -s mcxsrvnetworker.mcx.in -c MCXDAG02 -L -D b4a957a7-00000006-58a1e00f-58a1e00f-00011502-0223015d -A NSR_PS_DEBUG_ID=1487089825 nsrsnapck -s mcxsrvnetworker.mcx.in -c MCXDAG02 -D 9246709b-00000006-58a1e04b-58a1e04b-00011502-00462b5d -A NSR_PS_DEBUG_ID=1487089825 51513:nsrsnap: Retention failure, error encountered while deleting snapshots.

51513:nsrsnap: Retention failure, error encountered while deleting snapshots.

APPLICATIONS:\Microsoft Exchange 2013

Kindly add your valueable inputs if the issue is known.