Dell Rapid CIFS

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Dell Rapid CIFS

Veeam Logoby stevil » Mon Sep 05, 2016 9:58 pm

I've been playing with a couple of new Dell DR4300 NAS's as backup a repository. We're running backups over 1Gb at the moment so I thought I'd try the rapid CIFS driver that dell provide to do source side dedupe/compression to speed things up. The result was pretty impressive with effective throughput going from 1Gb to over 7Gb. This is all well and good but at the same time Dell don't officially approve the use of the driver with Veeam, and I have noticed some odd stalls in the backup job which at the moment I'm blaming on this driver. It's going to be hard not to use the driver given the massive impact it has on reducing our backup times.
Have any of you guys have a go with the rapid CIFS driver? Any comments?
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Re: Dell Rapid CIFS

Veeam Logoby stevil » Fri Sep 09, 2016 1:42 pm

For those interested. Speaking to Dell, they've seen the same issues, hence why the driver isn't certified to use with Veeam. They are working with Veeam on this (where the proxy stalls and needs the driver reloading). No word on priority or ETA. It seems like an awesome addition if it can be productionised.
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Re: Dell Rapid CIFS

Veeam Logoby enoch » Sun Sep 11, 2016 2:40 pm

Be aware that we dropped using the Dell Rapid CIFS driver because it was not supported by Dell and we got disk corruptions using it together with Veeam!
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Re: Dell Rapid CIFS

Veeam Logoby stevil » Mon Sep 12, 2016 12:47 pm

Did the backup jobs themselves become corrupt?
I've reduced our two proxies down to 4 threads each, this seems to have fixed the issue we were previously seeing. Apparently each CIFS container on the NAS can only handle 16 threads anyway. Previously I had 2 x 12 threads firing at it, so this may have made things worse. I've done a couple of test restores from the data, it seems OK so far.
What environment were you testing it in? 1Gb/10Gb? How many threads/proxies?

Thanks for your feedback. Interesting to hear someone else has been down this road :)
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Re: Dell Rapid CIFS

Veeam Logoby enoch » Mon Sep 12, 2016 1:04 pm

It was back with Veeam 8.0 and with 2xDR4100

We only used them for Backup Copy jobs, but as I wrote we got disk corruptions when using the Rapid CIFS driver.

It was on 10 Gb network.
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Re: Dell Rapid CIFS

Veeam Logoby stevil » Tue Apr 11, 2017 12:23 pm

I notice that Dell have released a new version of firmware and driver for the DR series (V4). I'm in the process of upgrading the NAS's and the driver. I'll test it again over the coming days and see if it's still 'broken' with veeam.
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Re: Dell Rapid CIFS

Veeam Logoby Rick_M » Tue Apr 11, 2017 11:23 pm

If you're going down this path - ensure Veeam is the only thing writing to the DR Device. We encountered the below errors causing Veeam job hangs when RDA connections were made to the DR Device at the same time from Netvault - It's worth noting Netvault didn't even need to write to the device for this to occur - having an active connection was enough (This added months to the troubleshooting process)

Error PrepStorageForWriteEx failed *.vib' at Veeam.Backup.AgentProvider.CBackupClient.PrepStorageForWriteEx(String storageFilename, Int32 kbBlockSize, Int32 blockAlignmentLogarithm) Error Exception of type 'Veeam.Backup.AgentProvider.AgentClosedException' was thrown. at Veeam.Backup.AgentProvider.CClientAgentProtocol.WaitUntilWorking(Int32 timeout) Error Failed to connect to agent's endpoint *. Host: ********.
Error No connection could be made because the target machine actively refused it ************ (System.Net.Sockets.SocketException)
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Re: Dell Rapid CIFS

Veeam Logoby btmaus » Wed Jul 26, 2017 9:32 am 2 people like this post

Quest has released v4.0.0.3 of their firmware for these appliances, it now has Rapid CIFS support with Veeam 9.5.
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Re: Dell Rapid CIFS

Veeam Logoby stevil » Tue Nov 14, 2017 10:05 am

That's great news. Shame I didn't see this months ago. I'll go on the hunt for it and give it a try. Thanks!
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Re: Dell Rapid CIFS

Veeam Logoby stevil » Tue Nov 14, 2017 10:22 am

https://www.quest.com/community/b/en/po ... ompetitors

Adding this link in for anyone else who struggled to find it.....
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Re: Dell Rapid CIFS

Veeam Logoby jerseyconnect » Tue Nov 14, 2017 2:41 pm

stevil let us know how it goes this time around.

We have a DR4100 as our remote repository and tired RapidCFS this September with our backup copy job. It ran great for 2 weeks with throughput improved 2.5x, but then the Veeam copy job would hang and just stop processing VMs. This was with only 6 threads from one proxy.

Our DR4100 is on v4.0.0.3 and Veaam is v9.5 U2.
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Re: Dell Rapid CIFS

Veeam Logoby opg70 » Wed Nov 15, 2017 3:41 pm

I had the same experience when I tested RapidCIFS and a DR6000 - it ran well for a while then the copy job hung and basically wouldn't run properly until I removed the driver. No problems afterwards, all was back to normal.
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Re: Dell Rapid CIFS

Veeam Logoby btmaus » Wed Nov 15, 2017 11:07 pm

Anyone using the RapidCIFS driver successfully yet for a long period of time?
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