I currently have two RAID arrays, one RAID5 (3x8TB) at /dev/md127 and a newly created RAID6 (5x12TB) at /dev/md0.
I'll post the details here and then ask my questions below. To wit:
root@cubeserv:~# mdadm --detail /dev/md127
/dev/md127:
Version : 1.2
Creation Time : Thu Nov 12 19:17:48 2020
Raid Level : raid5
Array Size : 15627788288 (14.55 TiB 16.00 TB)
Used Dev Size : 7813894144 (7.28 TiB 8.00 TB)
Raid Devices : 3
Total Devices : 3
Persistence : Superblock is persistent
Intent Bitmap : Internal
Update Time : Mon Jan 26 11:05:36 2026
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 512K
Consistency Policy : bitmap
Name : Cubeserv:PrimeRAID
UUID : 48766f2b:7657af02:cfdc3053:e72e22d1
Events : 173923
Number Major Minor RaidDevice State
0 8 64 0 active sync /dev/sde
1 8 96 1 active sync /dev/sdg
2 8 80 2 active sync /dev/sdfroot@cubeserv:~# mdadm --detail /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Sat Jan 24 14:27:17 2026
Raid Level : raid6
Array Size : 35156259840 (32.74 TiB 36.00 TB)
Used Dev Size : 11718753280 (10.91 TiB 12.00 TB)
Raid Devices : 5
Total Devices : 5
Persistence : Superblock is persistent
Update Time : Mon Jan 26 10:44:07 2026
State : clean
Active Devices : 5
Working Devices : 5
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 512K
Consistency Policy : resync
Name : cubeserv:0 (local to host cubeserv)
UUID : 450ea103:fd5e7912:8984f17a:99d496cc
Events : 530
Number Major Minor RaidDevice State
0 8 0 0 active sync /dev/sda
1 8 16 1 active sync /dev/sdb
2 8 32 2 active sync /dev/sdc
3 8 48 3 active sync /dev/sdd
4 8 112 4 active sync /dev/sdhFrom /etc/mdadm/mdadm.conf:
# definitions of existing MD arrays
ARRAY /dev/md/PrimeRAID metadata=1.2 UUID=48766f2b:7657af02:cfdc3053:e72e22d1
ARRAY /dev/md0 metadata=1.2 UUID=450ea103:fd5e7912:8984f17a:99d496ccQuestion 1:
Can I rename the new RAID6 array from cubeserv:0 to Cubeserv:Custom_name_here? If this requires taking the array down and reassembling it, what are the steps to do so safely? (Note: I don't have any data stored on the new array yet; I did create a filesystem on it but can delete and re-create if needed.)
Question 2:
The older array (/dev/md127) was created under OMV 5 and uses a bitmap, whereas the new array uses a 'resync' policy. Is this due to changes between OMV versions?
Should I enable the bitmap on the new array, or are there any disadvantages in doing so?
Question 3: What is the /dev/md/PrimeRAID entry in mdadm.conf all about? Why wouldn't it just be /dev/md127?
In any case, I happened to run into the