On average, my Windows file system storage policy aux copy job starts out with about 15 readers and maintains a steady pace of about 80 GB/hr. As each source copy completes, I notice the throughput of the job starts to decrease. I expect this, but when it goes down to one source copy being left, the throughput drops below 1 GB/hr. The source copy only contains ~5GB so I would expect the job to finish in under one hour.
The source copies reside on an HP D2700 array using 900GB drives and replicate to an EMC VNX with the same drive type.
Does anyone have any recommendation for performance tuning aux copy jobs on disk libraries? I've been through the documentation and tried a few options but no luck.
On the MediaAgents, I have UseCacheDB and DataMoverUseLookAheadLinkReader options enabled.
The mount paths are configured to use 1024 blocks for fragmentation, and number of writers are set to 15 (will boost them to 25 to test).
The Aux Copy has DASH enabled and network optimized selected.
Running out of decent options here. Anything else to check?