The Seagate firmware issue I'm talking about is
this one -- a bunch of the 7200.11 32MB drives were shipped with faulty firmware that instead of using 32MB cache, use
0MB cache. Good thing you have that warranty.
And the Seagate drive probably seems very quiet to you because you've got a friggin Raptor in there -- the loudest drive out there. You can't hear it over the Raptor. The sound and heat issues are all relative. Of course, compared to your Raptor, the Seagate seems cool and quiet. Try putting that Seagate in with WD's AAKS or GP offerings and the Seagate drone will drive you insane. It did to me. My two Segate drives are now relagated to an external Firewire 800 case that I turn on once a month for a time machine backup. My god are they're loud compared to my 3 WDs.
0 cache?? My seagate is showing the 32mb of cache (I'm sure like any other hdd and products there will be some group of people with some kind of defects/problems and yes even your precious WD hdd). And its not a bunch of them, its like 4-5 people complaining about it as to millions of users that are fine with the drive. I'm sure if I google hard enough I can find similar or even other problems with your WD drive as well.
Plus the 150gb raptor doesnt make any noise except the click noise when its thinking which isnt a huge deal at all, if anything I like that click noise when the raptor drive is thinking, I guess I'm used to that noise since the good ol pc days 15+ years ago. Other than that I dont hear any other clicking noise/vibration nothing out of the whole mac pro its dead silent. Only if I put a dvd in will it sound like an airplane taking off but other than that no noise whatsoever, even my 8800gt is completely silent (cant even hear the fan on even on intensive tasks).
Also in this thread and if you scroll down I found:
http://discussions.apple.com/thread.jspa?messageID=6896145
supposedly there is a high % defect of
doa for these drives, good thing you have that 3 year warranty as to just 90 days.
Someone commented: "Follow up to my post re the WD6400AAKS RMA from Western Digital. Turns out...WD couldn't replace this drive due to it being out of production availability?? I took that to mean I don't need this drive, period. I requested they ship me a 7500AAKS in place of the original order and not charge me for the huge inconvenience. Apparently they're shipping it to me, but we'll see it I get my CC billed. Newegg gave me a refund minus shipping.
Their website has many DOA posts recently for this drive. STAY AWAY is my advice."
I mean I can say stuff like that as well and I've heard about these drives dieing pretty quickly as well. And if you ask me reliability is #1 reason for buying a hdd and these WD hdd fail at the first/main priority task.
Its quite the opposite for me though, I used to love Western Digital hdd's back 10 years ago and was the only hdd's that I used to purchase. And I had a bad experience with seagate drives in the past about 5-6 years ago, but these days I've switched to the other way around.
Honestly though, I really dont hear a difference in the hdd's making its noises at all unless I take pop the side panel door open from the mac pro and put my ear inside the case right next to the hdd almost touching it. To me dB is not a huge deal since they all sound relatively the same when operating and especially with the mac pro closed up and 2+ ft away from you. Heat is another issue but for me I'm in a small room with the mac pro and the heat is fine (doesnt really heat up my room with adding the seagate) but the speed is very welcomed from the seagate 1tb.