Unresponsive/Slow NAS performance post Anti-Virus + upgrade

Question

Hello all&nbsp;Since upgrading to firmware V6.4.1 and upgrading Ant-virus + to version 2.0.3 I have been suffering extraordinary slow/unresponsive performance from my Ready NAS 102.&nbsp;For example:There have been times when it would not allow me to login to the web GUI.Windows Vista, 7 and 10 explorer progress bars took minutes to load directory structures.I noticed an improvement after rebooting the NAS but this was short lived less than 15 minutes.&nbsp;The 4TB NAS drives are only about 25% full operating in a home environment so has a light duty cycle. The Web GUI says the drives are healthy and are operating in the ~38 degree Celsius. The fan is running about ~800 rpm.&nbsp;No virus have ever been found on these drives.&nbsp;Ani-Virus + is the only application that I run on the NAS other than the default ones. I turned off AFS (Apple File System) as not required.I have cleaned out the dust accumulation from 2 years use but the CPU temperature remained in the mid-high 60 degree Celsius range. I felt this is a little higher than it should be. On a hunch I decided to turn off the Anti-Virus + process. A partly loaded file suddenly and dramatically completed loading and equally importantly the CPU temperature dropped to mid-50s degree Celsius within a few minutes.&nbsp;I then performed some file loading tests using an I5 Lenovo T430 laptop. Test file was an XLS of 1.8GB. Application was pre-loaded.Anti-Virus off 7 seconds CPU temp ~55 degrees CAnti-Virus on 3:52 CPU temp rose to ~66 degrees Celsius during the load.I do not any pre-upgrade load time figures for comparison but load times where acceptable. The conclusion is that there is something seriously wrong with the latest version of Anti-Virus + or the priority assigned to the application.&nbsp;I note that other users are experiencing similar response problems but the little I have read have not done much in the way of quantitative measurements.&nbsp;I am reluctant to turn off Anti-Virus + but see little alternative.&nbsp;How can I roll back the Anti-Virus + application and/or when is a fix coming?&nbsp;Regards DavidBa

DavidBa · Answer

Sorry can not see how to edit a recent post:mansad:The above should read "Test file was an XLS of 1.8MB not 1.8GB"&nbsp;Cheers DavidBa

mdgm-ntgr · Answer

The problem is not with Anti-Virus Plus, but rather with the AV service itself. We are working on a fix, but this won't be in 6.4.2.
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For now you could disable the Anti-Virus service under System &gt; Settings &gt; Services

StephenB · Answer

mdgm wrote:
THe problem is not with Anti-Virus Plus, but rather with the AV service itself. We are working on a fix, but this won't be in 6.4.2.
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For now you could disable the Anti-Virus service under System &gt; Settings &gt; Services

Yes. &nbsp;If you really don't want to do that, then you can roll back to 6.4.0 w/o data loss.
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I'd disable the service myself - especially if your PCs have their own real-time AV.
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DavidBa · Answer

Thanks Stephen&nbsp;The NAS been working well since&nbsp;I disabled the Anti-virus software. As all my PCs are running anti-virus i feel the risk is minimal.&nbsp;It would be nice if Netgear could email the effected customers as it took a reasonable time to figure it out - as theh web interface is theonly tool i have to work with the NAS and I am sure that I am only scratching the surface of what it can so.&nbsp;Incidently, do you have a link to some instruction about how to roll back the NAS software version?&nbsp;Cheers David

StephenB · Answer

DavidBa wrote:Incidently, do you have a link to some instruction about how to roll back the NAS software version?
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It is not difficult to roll back to 6.4.0. &nbsp;Going back further is painful, and requires a factory reset. (basically you first downgrade to 6.4.0 beta, then downgrade again to 6.2.4, then you have to do the factory reset).
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But within 6.4.x, all you need to do is download the zip file of the release, and extract the img file within it. &nbsp;Then go to system-&gt;settings, and click on "manual update". &nbsp;Then choose the image file, and follow the prompts.

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Unresponsive/Slow NAS performance post Anti-Virus + upgrade

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