HDD Initialization

Hi all,

So I made the “Ultimate” Rackmount NAS Killer, and I’ve got everything setup except the hard drives. Unraid is installed, an array consisting of a 12TB drive for parity and 5 6TB drives for storage has been established. However, now I’m trying to add additional 12TB HDDs for storage (which Unraid allows) however neither of the two new 12TB HDDs are being acknowledged by the system.

The 12TB drives are brand new, just like the one that was used for Parity, however, unlike the one used for parity, neither of these 2 new drives are being initialized by the system. I’ve checked to make sure the power and data cables are working. I’ve even set up one of the new drives to use the same type of SATA port directly on the MOBO that’s feeding to the 12TB drive.

Nothing. I’ve plugged the two 12TB drives into a Windows PC just to confirm they spin up correctly, and they do.

Any ideas to what’s going on? Why did that first brand new 12TB drive spin up and initialize without issue but these won’t?

Would formatting the drives into FAT32 on a windows PC and THEN trying help?

Is there a reason that 7 drives is an unlucky number for that Supermicro X9SCM-F mobo? Although considering I was able to add another 6TB drive to test that limitation I’m guessing no?

This is my only roadblock to NAS bliss right now and it’s kind of frustrating. And I’m betting it’s something super easy/obvious.

With one of the new 12TB and the 26TB array with a Parity 12TB drive plugged in, this is what lsblk returns:

loop0 7:0 0 9.1M 1 loop /lib/modules
loop1 7:1 0 7.1M 1 loop /lib/firmware
loop2 7:2 0 20G 0 loop /var/lib/docker
loop3 7:3 0 1G 0 loop /etc/libvirt
sda 8:0 0 1.8T 0 disk
└─sda1 8:1 0 1.8T 0 part
sdb 8:16 1 28.9G 0 disk
└─sdb1 8:17 1 28.9G 0 part /boot
sdc 8:32 0 5.5T 0 disk
└─sdc1 8:33 0 5.5T 0 part
sdd 8:48 0 5.5T 0 disk
└─sdd1 8:49 0 5.5T 0 part
sde 8:64 0 5.5T 0 disk
└─sde1 8:65 0 5.5T 0 part
sdf 8:80 0 5.5T 0 disk
└─sdf1 8:81 0 5.5T 0 part
sdg 8:96 0 5.5T 0 disk
└─sdg1 8:97 0 5.5T 0 part
sdh 8:112 0 10.9T 0 disk
└─sdh1 8:113 0 10.9T 0 part
md1 9:1 0 5.5T 0 md /mnt/disk1
md2 9:2 0 5.5T 0 md /mnt/disk2
md3 9:3 0 5.5T 0 md /mnt/disk3
md4 9:4 0 5.5T 0 md /mnt/disk4
md5 9:5 0 5.5T 0 md /mnt/disk5

sdh is the Parity drive, but there’s no other 12TB drive recognized