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Forum Discussion
RND2000 unit and drive 1 dead
I've had my ReadyNAS Duo v1 for a decade or so. It had been running nicely with 2x2TB drives in X-Raid with the last firmware update. It has been on a UPS since purchase. Over the last couple of ...
DominicH2 wrote:
The backup USB disk seems to be missing quite a bit of data (and alway the most important stuff). I strongly suspect that, despite emailing me intermittently to say it had done a RAID sync, the NAS has not been copying across onto drive 2 for a long time. What is on the USB drive has now been copied across onto OneDrive on 2 laptops, so I think that data is now safe...
Did you get any emails regarding backup jobs? RAID sync and backup are entirely different things. And I wonder why it would be doing so many RAID syncs.
Thanks Sandshark
I was getting emails confirming all my backup jobs (x3/week for each of the shares) to a WD Passport plugged into the front USB. I just feel stupid that I had blithely assumed that because my early backups had been perfect, the latter ones would be as well.
The sync emails were a lot less frequent - mainly following a crash. Possibly every few months. Should it have been syncing more/less frequent'y than this?
I had always assumed that data was written to disk 1 immediately, and then copied across to disk 2 almost straight away afterwards, rather than waiting for a formal whole-drive sync. Was I wrong?
DominicH2 wrote:
The sync emails were a lot less frequent - mainly following a crash. Possibly every few months. Should it have been syncing more/less frequent'y than this?
Normally it never resyncs unless there is a problem (or you replace a disk).
It will usually resync after a crash, since there can be lost writes that weren't written to both disks. But of course it shouldn't be crashing in the first place.
DominicH2 wrote:I had always assumed that data was written to disk 1 immediately, and then copied across to disk 2 almost straight away afterwards, rather than waiting for a formal whole-drive sync. Was I wrong?
It isn't copied from one drive to the other. It's written in parallel to both drives. FWIW, it could be written to disk 2 before disk 1, there's no guarantee that it be written to disk 1 first.
You might need to try RAID recovery software, and see if it can get the missing data back. But I don't know if that will work on disk 2 (which isn't partitioned in the usual way).
R-Studio is the cheapest option (there is a windows version that supports the ext file system). https://www.r-studio.com/ Download it first (w/o purchasing) and see if it can recover anything.
In the end I sent the disks away to a data recovery firm. They managed to recover the folder/file structure. When we compared what the USB backup had on it with the list they sent, it was clear that only a handful of files were actually missing - just the ones my wife happened to have been looking for! She's been able to recreate each of the files, so didn't have to pay for data retrieval in the end. Phew!
All data now backed up on OneDrive pending purchase of a new NAS unit, with 4 bays rather than 2!
Was looking at the RN214, but I think I'm going to go for Synology's DS418play in part because their integration with OneDrive is more mature. Am I mistaken?
Thanks again for your opinions.
DominicH2 wrote:
Was looking at the RN214, but I think I'm going to go for Synology's DS418play in part because their integration with OneDrive is more mature. Am I mistaken?
I have no idea.
Some info on ReadyNAS OneDrive sync is here: https://kb.netgear.com/000049510/ReadyNAS-OS-6-9-Sync-with-OneDrive
The main limitation I've seen posted here is that the ReadyNAS can only log into one OneDrive account. But there is a workaround that sounds reasonable for home users here: https://community.netgear.com/t5/Using-your-ReadyNAS-in-Business/OneDrive-and-multiple-users/td-p/1519538
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