[blue68f100]

Most bios updates are done with a utility program, but some of the newer bios have an upgrade built it. BIOS updates can be very risky. The reason I have a programmer, I have had several updates go south. I never update unless I have a copy of the original bios. Some updates do not allow you to save the original/current BIOS. Bios updates cover the hardware. The OS covers how the hardware is utilitized, which what makes a system. The bios should not be the source of the problem due to the fact the way unix/linux reads drives.

Now a history on how Adaptec has worked with the Snap os. There were a period where Snap resized the drives from default. This minor change made the starting points different. So they had to get the correct size hd or resize used a drive utility. Snap would pullup your drive info as shipped and pre-format so it would plugin and work.

But since you had the orig array (1T) built, this is why I think you only have 1T with the newer drives. It was still seeing your original setup.

There are only a few threads on upgrading the guardian OS, HD's. One has a pretty detail procedure needed to remove all previous HD history.