Performance increase

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Performance increase

Veeam Logoby bjfails » Mon Dec 28, 2015 10:49 pm

My backup structure is as follows. 2 Hosts SAS connected to a PowerVault MD3200. The primary repository is a NAS network attached storage RAID 1. The redundant backup is a Tanberg RDX 3TB USB 3.0. The proxy is a virtual located on one of the hosts and the Datastore is on that host, not the SAN. The Backup is to the nas is configured as a ISCI Initiator through the 1gbps network. I backup approx 800gb incremental overnight when no network traffic. Getting about 35Mb/s with a bottleneck at the source - 96% source 67% proxy 9% network 4% target. My Backup Copy is to the RDX which runs through the proxy (A VM so uses the VM USB Controller) and as suspected only getting about 9Mb/s. Without major hardware changes is there a change I can make to speed up Backup Copy mainly, but anything would be nice.

Thanks in advance.
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Re: Performance increase

Veeam Logoby foggy » Tue Dec 29, 2015 11:48 am

What are the bottleneck stats for the backup copy job?
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Re: Performance increase

Veeam Logoby bjfails » Tue Dec 29, 2015 1:56 pm

Stats for Backup Copy are 25% Source > 2% Proxy > 16% Network > 74% Target.
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Re: Performance increase

Veeam Logoby foggy » Tue Dec 29, 2015 2:13 pm

That means that the target storage cannot provide enough IOPS. Try to target the job to some other storage to see whether it will perform better.

Am I understanding right, that RDX is also presented to the Veeam B&R server?
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Re: Performance increase

Veeam Logoby bjfails » Tue Dec 29, 2015 2:15 pm

Yes the RDX is presented to the B&R as a repository but I am pretty sure that the issue is it is connected to a USB 2.0 port and that is probably going to be my main problem. I am looking for a compatible USB 3.0 card to put in the host that is VmWare compliant then that hopefully will help a lot.
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Re: Performance increase

Veeam Logoby hucmat » Sun Jan 03, 2016 10:26 pm 1 person likes this post

I run a similar setup for our small sites and I've found that you just can't rely on VMware USB passthrough for any kind of performance. It works for small backups, but once you start to get a large amount of data the processing rate is just too slow to get the job done in any kind of reasonable backup window.

I've switched to using an old physical machine, with a USB 3 card, as a Veeam proxy for RDX backups. It doesn't have to be anything fancy. Just an old desktop machine will do.
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Re: Performance increase

Veeam Logoby bjfails » Mon Jan 04, 2016 1:10 am 2 people like this post

I added a USB 3.0 card and switched the controller to XHCI and my speeds increased to 66 Mb/s all over LAN.
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