I just recently bought a Hitachi 2T, Deskstar 7200rpm. Just on impulse really, and it was the cheapest in the shops, I didn't even bother to google it. It doesn't run too hot, this is compared to a WD 500G I bought a few years ago. These days, most new HDs are power saving (so the man in the shop told me, but then he would say anything wouldn't he?). The 'greener' ones he said, are 5400rpm.
I use the HD as external USB storage using a cheapo case. I don't know if this is true for other 2Ts, but it takes about 45 seconds for XP to initialise it. This is compared to about 15 secs for a WD 500G and 5 secs for a Samsung 80G. So maybe it's to do with the size. Linux of course does not have this problem, you just mount it and it's ready. Linux also performs copying much faster, especially for many small files (XP takes ages for many small files).
In hindsight, I might have gone for two 1Ts, for safety that I only lose half my files in a disaster, and also the startup time issue (above) with XP.


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