BE2012 - Duplicate from DeDup Device is VERY slow
Hopefully someone can help me - I'm running out of ideas:
We're using DeDuplication for the firststage-backup, afterwards the data is copied to external media - this time USB-disks (USB3 with USB3-controller)
The first stage is running fine, but the copy to usb is awfully slow - and gets slower every day.
It started with about 1400 MB/min, now it's down to 150-250 Mb/min.
To have a comparison to a "normal" duplicate to usb-job, I've created a b2d-device on the same storage as the dedup-foleder, made a backup and duplicated that to usb-disk - everthing identical, except the b2d-device used as a source instead of the dedup-device.
The result is about 6.000-7.500 MB/min - so the diskchannel and the usb-disk-channel is fine.
I don't have a problem with the slower speed from the dedup-device (due to the rehydrating) - as long it stays above 1000 MB/min, but it mustn't drop that far.
BE2012 with actual updates. The hardware is a HP DL180G6, CPU: E5606, 12 GB RAM. 5 SAS 1 TB Harddisks attached to an HP SmartArray P410 with 256 MB Cache and battery. CPU usage below 50%, RAM-usage ~ 50%.
Any idea ?