So the job is running, we're at 750GB of 19,5 TB.
The Speed is down to 86MB/s per drive and 347MB/s in total, Bottleneck is Target at 64%
The CPU is at around 30% usage on the Proxy/Target and the resource monitor shows me:
- Code: Select all
Image Read (B/sec) Write (B/sec) Total (B/sec)
System 347.283.712 348.485.097 695.768.809
System 0 296.533.713 296.533.713
VeeamAgent.exe 1.858.839 11.540.294 13.399.133
VeeamAgent.exe 238.313 7.054.057 7.292.369
VeeamAgent.exe 0 6.953.146 6.953.146
VeeamAgent.exe 1.811.177 4.645.795 6.456.972
VeeamAgent.exe 7285.975 3.875.561 4.161.536
(Yes, this is the best formatting I could do, sorry :/ )
So I've got 2x System tasks that write a around 300MB/s simultaniously, additionally one of them is reading the same amount and some VeeamAgent.exe's which are also moving data on the drive.
In above mentioned Whitepaper (which unfortunately is in German, just saw it), I see for Forward Incremental without synthetic fulls: "Die gesamte IO-Last wird von einem Lese- und zwei Schreib-Vorgängen auf nur einen Schreib-Vorgang sowie eine ReFS 3.1 MetadatenOperation reduziert"
Which translates to "The whole IO is reduced from one read and two write-processes to one write and one ReFS 3.1 Metadata Operation"
So I don't really get why System is reading at the same speed as it is writing and who the 2nd System Process is and what it is writing.
Also What are all the VeeamAgent.exe Processes doing?
I am looking to improve the speed of that backup as we expect the storage to grow from 4x20TB Drives to even more, possibly over 200TB in total.
If you have any other idea to improve the speed, just comment please