Quite. I've only had one fail so far (touch wood) but this is how it panned out: My original P3 450 system came with a 13GB Seagate Medalist and I had a 16GB IBM Deskstar added (originally wanted a 60GB but it wouldn't fit in the lame Time case I had). My second XP 3000+ system came with a 160GB Caviar IDE 2MB which is now in an Akasa Integral USB enclosure, and that's my current external hard disk. I bought a 200GB 8MB Caviar (Still IDE) in late 2004, and that's the one that got killed by a Qtec Power supply last October. When I moved the old OS disk out, I swapped in a 40GB Maxtor Diamondmax+8 2MB IDE just to run Windows. It was when I added two 250GB Caviar SE 8MB (S-ATA) drives last October that the power supply wrecked the PC due to overloading (400W from a 450W unit, you'd've thought that'd be safe!). Thankfully those survived, and are now in RAID 0 on that system. My current system just has the two disks in my signiature, but I intentionally used two external S-ATA slots, so two is the limit for internal S-ATA drives unless I buy a card, which I've no intention of doing for the moment. My eventual intention is to either buy or borrow a 320GB USB disk of some sort, copy the files from the RAID over, then wipe the RAID drives, take them out and give them their own IcyBoxes, then put the data back. i'll either return the 320 or put it back in the older system, 40GB ain't a lot, especially since it has two partitions, one of them running Linux.