Symantec 7 manual NetBackup Deduplication Engine queue processing

Managing deduplication 91

About maintenance processing

■NetBackup Deduplication Engine queue processing.

Operations that require database updates accumulate in a transaction queue. Twice a day, the NetBackup Deduplication Manager directs the deduplication engine to process the queue as one batch. The schedule is frequency-based.

By default, queue processing occurs every 12 hours, 20 minutes past the hour. Queue processing is CPU-bound. The postgres database process usually consumes 100% of the CPU cycles during queue processing.

■NetBackup Deduplication Engine garbage collection.

In a few rare scenarios, some data segments may become orphaned. Garbage collection cleans these segments up by removing them.

Garbage collection is an unobtrusive process; once a week the NetBackup Deduplication Manager directs the deduplication engine to collect and remove garbage.

NetBackup cannot change the maintenance process schedules. Because these processes do not block any other deduplication process, rescheduling should not be necessary. However, it you must reschedule these processes, contact your Symantec support representative.

See “NetBackup Deduplication Manager logs” on page 84.