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Forum Discussion
RN104 - Sudden loss of volume. V6.9.3. No Volumes Exist. Remove Inactive Volumes.
Hi All,
Running V6.9.3 on an RN104, 4 x WD Red 4TB drives installed, showing no errors, and suddenly on Tuesday evening lost the ability to write to any share. Unit has been running perfectly f...
If you look at smart_history.log you'll see that your system has had disks with 3 different capacities. So it's had to add additional RAID layers for the vertical expansion. That's why you have a md125, md126 and md127, not just a md127.
Whilst having multiple RAID layers is not a problem it can make investigation a little more involved e.g. if the RAID won't start (which isn't the case here).
There are free tools for Linux that can be used to attempt to recover data from a BTRFS filesystem.
There is also paid software for Windows.
Situations like this are considered on a case by case basis. When it comes to data recovery attempts it's important to proceed carefully to maximise the chances of success.
Hi MDGM,
Ah ok - that makes mych more sense, and yes I started out with varying sizes and types of disks until finally getting the 4 x WD Red's I'm with now. Many thanks for the explaination - it's very much appreciated.
I will have good look at the linux/Windows options, and also have an initial chat with Support to see the options they might present. Do they tend to look at the logs first before charging to ascertain the best course of action and charge?
Cheers,
Nick
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