October 9, 20232 yr Community Expert I'm upgrading an 8TB disk in my array to a larger 16TB (same size/model as my Parity Disk). A healthy array which I have had no errors/issues with. Following the documentation, I stopped the array, unassigned the disk to be replaced and restarted the array. The Disk3 that's being replaced did not come up as emulated as expected, and even at the bottom of Main, at Array Operation, Unraid is reporting "Configuration Valid". What is going on here, and how do I recover from this? Currently the original 8TH is removed and 16TB is in the system. System has been rebooted, no change. I have a free slot to reinstall the original 8TB into the system. I recently upgraded to 6.12.4 from 6.10.3. I have done this upgrade before and have not seen this happen. Edited October 9, 20232 yr by ConnerVT Solved
October 9, 20232 yr Author Community Expert Diags and some screenhots from Main and Dashboard. malta-tower-diagnostics-20231009-0847.zip
October 9, 20232 yr Community Expert According to the diags emulated disk3 mounted, cannot see stats since array was then stopped.
October 9, 20232 yr Author Community Expert Started array again, not showing emulated disk in Main or dashboard. gathered this new diagnostic then stopped array. malta-tower-diagnostics-20231009-0920.zip
October 9, 20232 yr Community Expert Solution Disk is being correctly emulated: Filesystem Size Used Avail Use% Mounted on /dev/md3p1 7.3T 4.3T 3.1T 59% /mnt/disk3 You will see the used/free space on the main GUI page, just need to assign the new disk to rebuild.
October 9, 20232 yr Author Community Expert I assigned the new 16TB drive and restarted the array. Now Unraid is reporting an emulated drive and is rebuilding it on the new 16TB drive. I know I'm old and my memory isn't always working as it should. But it seems that previously Unraid would display (on Main and Dashboard) that the affected (removed/disabled) disk was being emulated. That the drive just isn't displayed definitely puts people in a panic. Did this change in 6.12 (or even in 6.11, since I upgraded from 6.10.3)? For the current behavior is contrary to what is written in the manual: Quote Start the array to commit this change and make Unraid 'forget' the current assignment. Unraid will now tell you that the missing disk is being emulated. It does this using the combination of the remaining data drives and a parity drive to dynamically reconstruct the contents of the emulated drive. From a user perspective the system will act as if the drive was still present albeit with a reduced level of protection against another drive failing.
October 9, 20232 yr Community Expert 16 minutes ago, ConnerVT said: But it seems that previously Unraid would display (on Main and Dashboard) that the affected (removed/disabled) disk was being emulated. AFAIK it's always been like this, dashboard doesn't show emulated disks, only main, and just did a quick test with v6.10.3 and it's exactly the same.
October 9, 20232 yr Author Community Expert Hmmmm... Interesting. As I wrote earlier, I was not 100% sure of this. The documentation should be updated, as what it currently says is either misleading or just plain incorrect: Quote Unraid will now tell you that the missing disk is being emulated. Anyway, crisis has been averted and the new disk is currently rebuilding. As always, thank you so very much for your support! Edited October 9, 20232 yr by ConnerVT speeling
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