When I have a >2TB SSD I'll worry about booting from a >2TB drive.

Seriously anyone that makes a storage drive their boot drive right now isn't paying attention.

I agree. Still, iMacs can be configured with a single 2 TB drive, haha.

I'm more interested in the promised blazing fast boot times of UEFI. Maybe when paired with SSDs I can finally have a machine ready before I'm done scratching my butt.

Or, alternatively, they're using a large hardware RAID array which makes an SSD a pointless expense.

This, the new Intel SSDs, new AMD CPUs, new Radeons—there's a very interesting synergy of product launches.

Afaik you would need something like a 6+ disk RAID1 array to match the random access times of a good SSD. Talk about a pointless expense :D The SSD is probably the less expensive option if all you care about is boot/load times. (again, afaik)

Oh, and linux software raid ftw!

Also, from a system administration point of view, I would think you'd generally want to keep a RAID like that as a separate resource that can be taken offline for maintenance, etc., rather than having the added complication of saddling it with the bootable OS partition.

I know people with 6+ disk RAID5 arrays. Hardware with battery backing and RAM for performance. They make SSDs look like cheap toys, oh, and they store terabytes, not gigabytes.

And yeah, software RAID is great.. Except it doesn't scale all that effectively to large arrays. A hardware controller is a much more effective option for arrays containing more than a handful of drives.