So, this is what I have for my array devices. I'm not using Unraid as a NAS, but moreso as an application server that would backup to my Synology NAS. I'm running it on a Mini PC that could support only one mSata and one Sata device, so I'm using an external 4-bay enclosure for SSDs. This is what my Array Devices looks like:

 

 

I figure I might as well use the mSata for something, so using that for cache:

 

However, upon starting the array at the bottom, it shows "Total Size: 4 TB" not 12 TB as I would expect, but I'm also new to Unraid so I'm unsure if this is to be expected:

 

 

Is it 4 TB because of how Unraid "handles" RAID by not striping the data and each disk being independent? Or did I screw something up? I just don't want to have to wait 11 hours (which is crazy as my eight bay, 12 TB HDDs took less).

Edited June 18, 20233 yr by ajtatum

28 minutes ago, ajtatum said:

, it shows "Total Size: 4 TB" not 12 TB

That's total parity size, not array.

19 minutes ago, JorgeB said:

That's total parity size, not array.

 

Oh! Ok, that definitely makes sense now. Thank you for your prompt response. Now just have to wait for the array to be built... 

Is it normal for it to say "Array has 1 failed device. 1 heat warning. 1 SMART error." and the Parity drive be "invalid" while the array is building? For SMART, it shows as errors; however, these are new drives all purchased at the same time.

All except for the SMART error are normal, post the SMART report for that disk.