#Softraid update serial number
#Softraid update upgrade
#Softraid update pro
#Softraid update software

Swapped out the OWC cable for an Apple cable.I discovered they have a Known Issues page and the issue is there: Added 2 new unformatted drives to the Thunderbay 8-bay, for future Raid setup.Thunderbay 8-bay works fine connected via Thunderbolt 2 cable to Intel Mac. Same result: SoftRaid sees the drive, but will not mount it. Moved those drives to it, connected to Max 16', via OWC Thunderbolt 3 cable. SoftRaid sees the drive, but will not mount it.

#Softraid update pro

New MacBook Pro M1 Max 16' with Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter + Thunderbolt 2 cable.

I've had an external OWC Thunderbay 4-bay system for years.

At the very bottom, you should now see 'Done' enabled so hit it and proceed.

RAID 4/1+0 (10) are currently Mac only at this time. SoftRAID Pro works with OWC storage solutions and third party enclosures.

#Softraid update serial number

All these mdX softRAID partitions will now appear under USED DEVICES and you are ready to proceed with Ubuntu's installation. The SoftRAID serial number will work with both Mac and Windows but can only be active on one computer at a time.

Select md2 and then 'Add GPT Partition', format as EXT4 and mount on /.

Select md1 and then 'Add GPT Partition', format as SWAP.

So select md0 and then 'Add GPT Partition', format as EXT4 and mount on /boot.

#Softraid update upgrade

We now have 3 pairs of AVAILABLE DEVICES which will now format as the actual softRAID partitions. Upgrade to SoftRAID 6 will be a paid upgrade (expect around 100 for single license, but again, no official confirmation).

Repeat the process for md2 and select the two 'partition 4' entries.

Repeat the process for md1 and select the two 'partition 3' entries.

We'll create the first softRAID partition (md0) by selecting the two 'partition 2' entries (one from each disk).

#Softraid update software

Now click on 'Create software RAID (md)' under AVAILABLE DEVICES.Under each disk on AVAILABLE DEVICES you will now see 'partition 4'. 'Add GPT Partition' on the 1st disk, do not set a size (so it uses all available) and choose to leave it unformatted as with all the other partitions you created so far. Under each disk on AVAILABLE DEVICES you will now see 'partition 3'. let's say 16G cause we have 16G of actual RAM - but it's really up to you to decide that) and choose to leave it unformatted. 'Add GPT Partition' on the 1st disk, give it the same or half the size of your RAM (e.g.

Now we'll prepare the swap partitions.

Under each disk on AVAILABLE DEVICES you will now see 'partition 2'. These will be the /boot partitions for the softRAID array.

So go ahead and 'Add GPT Partition' on the 1st disk, give it a 1G size and choose to leave it unformatted.

The trick to setup a softRAID array is to create partitions for /boot, swap and / on each disk, but WITHOUT formatting them (and as such, there won't be a mount point for now).

These small partitions will be used by GRUB for booting the server.

You should now see two 1.000M bios_grub partitions created under USED DEVICES.

Now select the 1st disk to add as 'boot' disk (same menu that had REFORMAT in).

This will (temporarily) wipe out the partitions.

If the disks have existing partitions, click on each disk under AVAILABLE DEVICES and then select REFORMAT.

Select 'Custom storage layout' when you reach the storage configuration step of the installer.

And as of March 2021 it's possible that there's a bug as well with how the bios_grub partitions are created when using multiple disks. Let's start with the basics: the official guide by Ubuntu ( ) is outdated/wrong. Looking to create a Software RAID 1 setup for your 2-disk server on Ubuntu Server 20.04?