Veeam performance

[boraq11]

Hi,

 

this is my first topic, I hope I am in the right section, but my question is about a problem with SMB sharing.

The hardware:

for testing Unraid I am using an old HP G8 microserver with Xeon 1220 and 16 GB DDR3 ECC RAM.

I use two Seagate IronWolf Pro 16 TB as primary storage (fill-up), two old WD green for testing purposes, no cache.

 

I am using Veeam Agent free on my notebook (Windows 11).

Creating a backup to an Unraid array is a bit weird. I reach max 700 Mbit/s, which is okay, I guess my notebook is the bottleneck creating the backup.

But the problem is, every 30–60 seconds the throughput drops to 0 for up to 30 seconds. Neither my notebook nor Unraid shows throughput, so it seems to be really 0.

Using Wi-Fi, I do not have this problem, maybe because only 250 Mbit/s are possible, but: using another backup software I do not have this problem either. Bigger but: backing up to another SMB share, my desktop for example, I do not have this problem on the notebook. Same job, same settings ...

 

iperf shows 909/902 Mbit/s (sender/receiver).

Do you have an idea for me?

Veeam is using VSS and CBT, I do not see a problem here. Backing up the notebook to an external harddrive is much faster, above all, writing is continuous.

When copying a 100 GB test file from the notebook to unraid (same folder), I also have constant speed.

 

Thank you!

[trurl]

Do you have a parity disk assigned?

[boraq11]

Hi, sorry for late response. Yeah, two 16 TB disks in total, one as parity.