I'm unsure if I'm doing something wrong or how to fix this, but I'm brand new to NAS and Unraid, so I thought I'd ask!

I set this array up with 2x12TB drives, 3x14TB drives, and 4x16TB drives. 2 of the 16TB are parity.

My question is - why do disks 1 & 2 show only 12TB of space when they are 14TB drives? I set them all up at the same time, and the 2x16TB and 1x14TB show their capacity, but not the other 2 14TB. Any idea how this happened and how do I fix it? Thanks!

6 hours ago, awestera said:

My question is - why do disks 1 & 2 show only 12TB of space when they are 14TB drives?

I have no idea, but no one can answer without more information on your system.

Please attach your diagnostics to your next post.

Please post the diagnostics

Thanks, I ran the diagnostics - I'm assuming you want the info for "vars.txt" on the two drives? From what I can see, while it sees they are 14TB (ST14000), the size is only 12TB? The weird thing is that before I put them in the NAS I wiped them of all their data and there was definitely 14TB of free space.

[disk1] => Array

(

[idx] => 1

[name] => disk1

[device] => sdf

[id] => ST14000NM001G-2KJ103_ZL2AV00J

[size] => 11708591084

[sectors] => 27344764928

[sector_size] => 512

[transport] => ata

[rotational] => 1

[discard] => 0

[removable] => 0

[spundown] => 0

[status] => DISK_OK

[format] => GPT: custom

[temp] => 43

[numReads] => 880539990

[numWrites] => 792231731

[numErrors] => 0

[type] => Data

[color] => green-on

[spindownDelay] => -1

[spinupGroup] =>

[idSb] => ST14000NM001G-2KJ103_ZL2AV00J

[sizeSb] => 11708591084

[deviceSb] => md1p1

[luksState] => 0

[fsType] => xfs

[fsStatus] => Mounted

[autotrim] => off

[compression] => off

[warning] =>

[critical] =>

[exportable] => no

[comment] =>

[fsColor] => green-on

[fsSize] => 11706504172

[fsFree] => 147314112

[fsUsed] => 11559190060

)

[disk2] => Array

(

[idx] => 2

[name] => disk2

[device] => sdg

[id] => ST14000NM001G-2KJ103_ZTM0HKPL

[size] => 11708591084

[sectors] => 27344764928

[sector_size] => 512

[transport] => ata

[rotational] => 1

[discard] => 0

[removable] => 0

[spundown] => 0

[status] => DISK_OK

[format] => GPT: custom

[temp] => 39

[numReads] => 311834953

[numWrites] => 293963111

[numErrors] => 0

[type] => Data

[color] => green-on

[spindownDelay] => -1

[spinupGroup] =>

[idSb] => ST14000NM001G-2KJ103_ZTM0HKPL

[sizeSb] => 11708591084

[deviceSb] => md2p1

[luksState] => 0

[fsType] => xfs

[fsStatus] => Mounted

[autotrim] => off

[compression] => off

[warning] =>

[critical] =>

[exportable] => no

[comment] =>

[fsColor] => green-on

[fsSize] => 11706504172

[fsFree] => 2316868280

[fsUsed] => 9389635892

)

3 hours ago, awestera said:

Thanks, I ran the diagnostics - I'm assuming you want the info for "vars.txt" on the two drives?

Generally it means the whole zip file. I'll let Jorge decide if this is enough for him. :D

I mean, I can upload that too lol.

plex-diagnostics-20250628-0837.zip

The disks had existing partitions, and from 7.1 Unraid will use the larges one:

Jun 19 18:10:16 Plex emhttpd: disk sdf 14000519643136 gpt

Jun 19 18:10:16 Plex emhttpd: part 1 sdf1 2048 298844160 gpt 0fc63daf-8483-4772-8e79-3d69d8477de4

Jun 19 18:10:16 Plex emhttpd: part 2 sdf2 585728 8192524288 gpt 0fc63daf-8483-4772-8e79-3d69d8477de4

Jun 19 18:10:16 Plex emhttpd: part 3 sdf3 16586752 2047868928 gpt 0fc63daf-8483-4772-8e79-3d69d8477de4

Jun 19 18:10:16 Plex emhttpd: part 4 sdf4 20586496 11989597270016 gpt 0fc63daf-8483-4772-8e79-3d69d8477de4

Jun 19 18:10:16 Plex emhttpd: part 5 sdf5 23437768664 2000381018112 gpt 0fc63daf-8483-4772-8e79-3d69d8477de4

In this case, it's partition #4 which is 12TB, if you are reusing partitioned disks, recommend erasing them before adding to the array, you could also resolve the issue now by rebuilding the affected disks one at time, and Unraid would recreate the standard partition layout.

So weird, as I did reformat them before I put them in the array (they were for a Mac, so I reformatted to exFAT). I suppose all I did was wipe the one partition of files and not completely rebuild the drive, which eliminates any separate partitions.

Eitehr way, I'm so new to UnRaid, how do I reformat the drive? When I put them in the array my understanding was it reformatted them then? I imagine I first use unbalance and scatter all the files off it first to make sure I don't lose any data?

Unless I am mistaking, formatting change the file system of a partition. In that case, you need to remove all partitions and then let Unraid manage the formatting.

I think you can remove partitions of a disk from Unassigned Devices, but you would have to activate 'Destructive Mode'.

To create the new partition layout, you need to rebuild, not just reformat:

https://docs.unraid.net/unraid-os/manual/storage-management#rebuilding-a-drive-onto-itself