[citation][nom]loubarouba[/nom] 1. Can computers even recognize 5tb hard drives? 2. Or will an add-on card be necessary?[/citation]
1. You need the newer UEFI BIOS to read them without any hassle. Just built a new PC for my aunt and uncle, Asus P8Z68-V and it has a great UEFI BIOS, I love it. Crucial M4 128GB SSD, very nice, not the fastest, but rather have good quality than too much speed and RMA's. Especially if not my PC, where Images and what not I could deal with it easier, non tech people, it would be a big PITA.
Got a WD 3TB green drive and the Asus MB and Win7 x64 recognized it just fine. I did run a 6 hour hard drive test on it before I started using it and am happy with it. I like my Samsung HD204UI 2TB drives, but that WD is the one I'd like in my system.
I'm turned off of Seagate right now, but maybe they'll start doing better quality control with these 5TB's? I really, really hope so. I'm hoping that SpinRite 6 will eventually come out with 6.1 to handle these bigger drives. I'm sure it does just fine, but it's an old program, and would feel much more comfortable with a newer version, just in case the bigger drives I'll eventually will be buying run into problems.
2. The right addon cards should work just fine. I thought I read many months ago that some models come with one?
I was thinking of an addon card and such and more DDR2 RAM for my Intel 775 (Q6600) PC. But I'm just going to hold off and build all new and I'll get UEFI BIOS, USB 3.0 and PCIe 3.0 that just came out.
Of course it helps I'm close to a Micro Center though. Their CPU, MB combo's are very, very competitive.