Recently I purchased a 20TB WD Gold drive - it didn't work in either of the DAS units. I assumed it was faulty and sent it back. I now have a new 24TB WD Gold drive which behaves exactly the same way - when connected to either DAS, the power light comes on (only the first of the two green lights) but the disk does not spin up and isn't detected/seen by the host operating system the DAS is connected to. This is the same for both systems.
I thought the disk may somehow also be DOA but that seemed very unlikely. This time around I had space to test it on an internal SATA port on one of the machines and I found to my surprise that the disk actually works fine when connected to a normal motherboard port and SATA power cable. So the issue isn't the disks, it's the DAS.
So the question is, why do these disks not work inside the D6-320 DAS chassis?
The DAS units are both using their original power supplies and cables and, with the exception of these specific disks, work fine.
Here is the disk info from the replacement drive for reference:
Code: Select all
Device Model: WDC WD242KRYZ-01CMSB0
Serial Number: <removed>
LU WWN Device Id: <removed>
Firmware Version: 01.01H01
User Capacity: 24,000,277,250,048 bytes [24.0 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 7200 rpm
Form Factor: 3.5 inches
Device is: Not in smartctl database 7.5/5706
ATA Version is: ACS-5 (minor revision not indicated)
SATA Version is: SATA 3.5, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Mon Mar 30 13:52:13 2026 BST
SMART support is: Available - device has SMART capability.
SMART support is: EnabledThanks.

