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Best way to swap drives ReadyNAS nv+ v2
I know that my ReadyNAS nv+ v2 is no longer supported, however I would like to use it as a place to store data that can easily be reproduced. I've had it fitted from day 1 with two 3 TB Western Digit...
With the help of StephenB, I disabled write cache in the new three drive setup, also opted to disable AFP, NFS, ReadyDLNA and UPnP services while I was at it.
Low and behold, this time Robocopy was able to copy 35+ GB at 200 Mbps to the NAS without any issues! So I now have Robocopy copying a lot of other data to the NAS, my guess is that whatever the issue was has gone.
That's a CMR drive, so should work well. It sounds like you may be overwhelming the OS. Try using a backup job on the NAS instead of robocopy. It may go slower, but not needed to keep re-starting would be preferable, I think.
Yeah the drives are from an era when SMR had yet to be invented. However, I don't believe it should be possible to overwhelm the OS of the ReadyNAS nv+ v2 using a standard Windows tool like Robocopy that simply relies on SMBv1 to create/write to files on the NAS at about 250 Mbps. Happy to try copying using other tools, not sure how to slow things down though. What I like about Robocopy is that you can preserve the timestamps of files and directories.
Not sure how one would configure a backup job to copy from a Windows PC in the network? Happy to try that of course to see if it makes a difference. The "good" news is that the issue is easily reproduced within 15 minutes or so.
What I like about Robocopy is that you can
https://www.smallnetbuilder.com/nas/nas-reviews/netgear-readynas-duo-v2-reviewed/
preserve the timestamps of files and directories.
FWIW, I use Robocopy also.
The name stands for "Robust File Copy". It is designed to handle intermittent connection failures, and still provide accurate copies and mirrored folders. Those robustness features do slow it down, so it is NOT a good tool to measure the NAS performance. A better tool you can use for testing is NAStester
As far as what your NAS is capable of, it was an entry-level NAS, and it is certainly limited by its CPU.
There is an old review of the Duo v2 here:
- https://www.smallnetbuilder.com/nas/nas-reviews/netgear-readynas-duo-v2-reviewed/
That is the two-bay version of your NAS. They measured RAID-1 write performance at about 50 Mbps, and about 87 Mbps RAID-1 read performance.
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