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Slow VTL backups using Veeam and Starwind VTL on Azure

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Slow VTL backups using Veeam and Starwind VTL on Azure

Postby marciofeld » Wed Oct 24, 2018 4:11 pm

Hi,
I have a Veeam B&R Infrastructure on premisses. I deployed an Azure VM with 8 vCPUs, 16 GB Memory and Premium SSD disks and installed Starwind VTL for evaluation porpuses.
I have a 200 Mbps dedicated Azure ExpressRoute connection between my Datacenter and my Azure Infrastructure.

I am experiencing performance problems when trying to write VTL Tapes using Veeam. The tape writing rates never go beyond 11 MB/s.
On some tests, I transmit data directly from my on premisses Veeam Repository, and on other tests, I create a Veeam Backup Copy to a local disk on my Starwind VTL VM on Azure, but the performance bootleneck is always the target (the tape drive).

Could someone help me to improve the write performance?
marciofeld
 
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Re: Slow VTL backups using Veeam and Starwind VTL on Azure

Postby Oleg(staff) » Fri Oct 26, 2018 12:27 pm

What StarWind build are you using?
Please make sure you are running the latest StarWind build.
Oleg(staff)
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Re: Slow VTL backups using Veeam and Starwind VTL on Azure

Postby marciofeld » Sun Dec 09, 2018 1:27 am

After lots of troubleshooting, I was able to identify and correct the issue.
I'm running the latest version of Starwind VTL.
The issue is that Azure VM disks are very very slow!!! I could manage that using Windows Storage Spaces. I created a Striped Storage Pool using a group of disks. This setting helped to increase the volume throughput and IOPs, and now my VTL backups are running much faster.
marciofeld
 
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Re: Slow VTL backups using Veeam and Starwind VTL on Azure

Postby Boris (staff) » Sun Dec 09, 2018 7:48 am

Thanks for sharing the solution. It may be useful for other community members.
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