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RN424 swap out all 4 disks together - factory reset procedure
Per earlier posts, RN424 has 4x4TB Barracuda SMR disks, about 80% full.. Contents are fully backed up via two other NAS units (RN528X and RN212). Plan is to remove all 4 disks for archiving, repl...
You can save the configuration file from the old volume and then restore it to the new after it's created, assuming you use the same volume name. If you have any apps installed, you should re-install them before restoring the configuration. Of course, especially if you were using ReadyCloud, then you may want to take this opportunity to start from scratch.
RN424, Installed 4 new 18TB drives:
- LCD display displayed "Booting" followed by "Factory Reset...", then "Configuring Network", then it completed booting
- LCD shows "Resync data 0.4%" and it's crawling along
On login (admin/password), the wizard automatically appeared and walked me through initial setup. Perfect.
In the System/Volumes tab, I can see the resyncing taking place, says it will take another 24 hours??
There's no data copied onto these drives yet, so what is the NAS "resyncing"? Nomenclature is confusing.
jimk1963 wrote:
In the System/Volumes tab, I can see the resyncing taking place, says it will take another 24 hours??
There's no data copied onto these drives yet, so what is the NAS "resyncing"? Nomenclature is confusing.
Keep in mind you operate the total storage of what was a big system a few years ago
Even with "no data", the RAID5/RAID6 has to build the parity stripe all over all your disks plugged and active in a RAID5/RAID6.
FMI: https://en.wikipedia.org/wiki/Standard_RAID_levels ... focus on RAID5/RAID6.
jimk1963 wrote:
There's no data copied onto these drives yet, so what is the NAS "resyncing"? Nomenclature is confusing.
The RAID array is a virtual disk that is protected by RAID parirty blocks. Those parity blocks are being created during the resync. This is "below" the file system, so the amount of data in the volume doesn't matter. RAID parity protects both the used and unused space on the volume. Syncing the volume is the same process (and takes the same amount of time) whether the volume is empty or full.
As far as time goes, the process requires every sector on every disk to be either read or written. So it will take a while (and could easily take longer than the 24 hour estimate).
I tried placing the removed RN424 disks (4x4TB Barracuda's) back into my RN314, thinking they should just work. After all, these are the same 4 disks I swapped from the RN314 to the RN424, and that worked fine.
But this time, it didn't work. Getting the dreaded "Remove inactive volumes to use the Disk #1,2,3,4." Did some digging, found others who had this issue, none who reported ability to fix it without losing the data.
The data on these drives is fully backed up, so I'm not overly concerned. Plus, these drives are SMR and one disk showed 8 errors during the Disk Test, so I'll be ditching these drives eventually anyway. Still, would like to understand how this happened. One thing I did observe was that when I powered up the unit, the LCD reported the ReadyNAS OS is being upgraded. The OS on the RN314 was very close to the latest (in fact I thought it was on the latest, guess not). Maybe that created the issue, dunno. Weird thing is, I can access the RN314 just fine, including SSH'ing into it. It's just the volume on the drives - seems inaccessible.
jimk1963 wrote:
But this time, it didn't work. Getting the dreaded "Remove inactive volumes to use the Disk #1,2,3,4." Did some digging, found others who had this issue, none who reported ability to fix it without losing the data.
It depends on what happened - I have been able to help several folks remount the volume.
If you can get me the full log zip file, I can take a look. Send me a link via PM.
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