I had a disk crash on my DATA raid5 made by 3x 8TB SATA HDD. The controller is an Adapted 6805T and ESXi has been installed with a custom ISO with vendor specific .vib. It worked fine for years...
Due to a supplier issue the disk was replaced with a different brand (old brand Toshiba, new brand is Seagate), still I read up in Internet and was also reassured by the vendor you can mix and match different HDD make, so I have installed it. Initialised the disk using the controller BIOS, added to the RAID5 and the re-sync immediately started. At that point I restarted the box to allow for ESXi to come back online.
Now... I personally don't think this has anything to do with the different HDD brand here but my issue is: after about 24 hours the RAID5 is still reported as degraded:
However... using arcconf I get a different message:
Logical Device number 2
Logical Device name : DATA
Block Size of member drives : 512 Bytes
RAID level : 5
Unique Identifier : D63F93AD
Status of Logical Device : Optimal
Additional details : Initialized with Build/Clear
Size : 15257590 MB
Parity space : 7628800 MB
Stripe-unit size : 256 KB
Interface Type : Serial ATA
Device Type : HDD
Read-cache setting : Enabled
Read-cache status : On
Write-cache setting : Disabled
Write-cache status : Off
Partitioned : Yes
Protected by Hot-Spare : No
Bootable : No
Failed stripes : No
Power settings : Disabled
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Logical Device segment information
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Segment 0 : Present (7630885MB, SATA, HDD, Connector:1, Device:0) WKD068VK
Segment 1 : Present (7630885MB, SATA, HDD, Connector:1, Device:1) 27M2K0VBFP9E
Segment 2 : Present (7630885MB, SATA, HDD, Connector:1, Device:2) 27M2K0VLFP9E
I suppose rebooting the box would be a thing to try but I'm worried about the re-sync to start over. Who to believe here?