mattesW

That worked now, it shows Raid1 allocation profile. The same balance conversion had no effect prior going through this process of re-adding the pool. Looks like it's all in great shape now. Thank you so much for your help!

Thank you, the array started back with that change. After assigning the second drive and starting the array, I see diskFsProfile=single again in the pool, even though it started back up with both assigned... Is that normal? I do see the second drive listed now but I want to make sure it actually is running in RAID1. Diagnostics attached. Thanks again for all your help! nexus-nas-diagnostics-20250122-1302.zip

Stopped the array. Assigned the second drive as app2, but now it cannot even start the array and gives the following error... nexus-nas-diagnostics-20250122-1204.zip

OK, I did that. What seems odd is that when I went through the steps and re-added the new pool (same name) with a single slot, assigned the 522 drive, and started the array - it automatically shows me "Apps 2" as not installed. Did it reuse the old pool config somehow? Attached also the new created diagnostics. nexus-nas-diagnostics-20250122-1113.zip

Here it is, thank s for checking. nexus-nas-diagnostics-20250122-0756.zip

Pretty new with Unraid and starting on 7.0, so this may be a newbie issue. That said: I'm using an SSD pool as store for my docker apps and VMs. Initially, the pool consisted of a single 4 TB drive, I've now added a 2nd 4TB drive. The intent is to mirror these for redundancy, RAID1. Paused the arrays, added the drive to the pool, started the array... But the stats looked like that 2nd drive isn't really being used. I also didn't notice a rebalancing or anything, even though I triggered it manually. It also only shows the first drive in the status and file system, and "allocation profile: single" which I cannot change. How can I add the 2nd drive and have it properly be used in RAID1? Thank you