Hitachi fastEST but a bit noisy seeks. 1TB variant has lots of whoosh as well due to number of platters.
Seagate noisiEST but still the slowEST. See StorageReview's benchmarks on last few generations of Seagate drives and you should get the point. High seek noise doesn't mean good performance.
Samsung and WD are faster than Seagate but slower than Hitachi. They are also quieter than Hitachi and Seagate.
Samsung: lowest idle noise at 7200rpm. Non-obtrusive seeks. Very high vibration. Absolutely requires decoupling.
WD 7200rpm models: non-obtrusive idle and very quiet seeks.
WD 5400rpm models (GreenPower): nearly inaudible idle and very quiet seeks. Slightly slower than most competition, for obvious reasons... but at least it's not slower than Seagate. (Don't believe me? Read this article:
http://www.storagereview.com/1000.sr and especially page 3 because there's the relevant single-user tests.)
All HDDs manufactured by Hitachi, Samsung and WD support AAM. That means, seek noise can be changed between noisy/performance & quiet/slightly_slower. Performance hit of enabling AAM depends on use scenario but will probably be in range of 1...10% while having a big effect on seek noise. Only in server environment enabling AAM might reduce performance in the same amount as it increases random access time... outside of server environment, random access time means less, caching algorithms and sequential transfer rate mean more.
Seagate doesn't support AAM, like already mentioned. They can't be configured to quiet seek mode. I don't see any reason to consider these drives for a quiet/silent build... nor for a noisy build that aims at top performance. (Yes, warranty alone is no reason to buy these drives.) These drives just suck today... there was a time when Seagates were something special but that time has long since passed.
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mcoleg:
"just wanted to mention - 7200.11 are am improvement over 7200.10 noise-wise. less vibrations and idle and seeks are more muffled. while it won't beat Samsung or Hitachi, obviously, they no longer will drive you to a suicide with all that ruckus"
7200.11 may (or may not) be a tad quieter than 7200.10 but
A) that's like saying an unmuffled V8 sounds quieter than space shuttle Atlantis taking off
B) 7200.11 still doesn't have AAM.
"there's an interesting seagate drive out there, btw - st3250410as. while it's listed as 7200.10, it's actually from 7200.11 family - it has single 250gb platter. the drive is half-height and not too loud."
What is "not too loud" is subjective but that drive sure is interesting... not because it's unusually high density (because Samsung and WD has up to 320GB on single platter) and not because it might be quietISH (but probably still far from actually being "quiet") but because it's thin.
And no, it's not "half-height". I have a 42 MB half-height Miniscribe... it is the height of CD-ROM drive. (Full-height was the height of two CD-ROM drives stacked.) Normal HDDs are all "low-profile". What you call "half-height" is actually "ultra-low-profile".
Ultra-low-profile HDDs are quite rare. Seagate still makes them. Hitachi's 7K80 and 7K160 are hybrids in that their casing are of ultra-low-profile size but top cover is bulged outwards so that it requires the same space as regular HDDs. Airflow is improved even, though.
Samsung had PL40. I have one of those around. 80GB/platter technology but only one side used. Actually kinda noisy one for a Samsung... but at least the vibration is like what we'd expect for a Samsung... terrible.
I also have a Medalist of ultra-low-profile. What is weird about it is that it has TWO platters with FOUR heads, all fit into the size of case that typically mounts only one platter (or like PL40, "half" a platter). It's pretty cramped HDD and makes me respect Seagates effort in stuffing the components in it... like I respect Hitachi's achievement with 5-platter monsters in low-profile. And Seagate Barracuda 180 with 12 platter and 24 heads fit into half-height. Now that's a MONSTER like no other... well, there's of course IBM RAMAC and stuff. "Dish washers"... HDDs the size of a washing machine with fifty 24 inch platters inside. GODLIKE.
"There's no use trying to talk - no human sound can stand up to this. Loud enough to knock you down."
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KenAF:
"But there are not 1,000,000,000 bytes in a gigabyte. There are 1,073,741,824 bytes per gigabyte."
But there really is 1,000,000,000 bytes in a gigabyte (shorted GB). 1,073,741,824 bytes make a
gibibyte (shorted GiB) (which is incorrectly referred as "gigabyte" by 90+% of software vendors, incl. Microsoft).
Ofter repeated lie has become a truth?
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to Wisebird: you should enable AAM feature and set it to quietest available. Download HDDScan if you're using WinXP or related OS. If you're using some other OS, create a bootable floppy disk with Hitachi Feature Tool (FTOOL). It works with non-Hitachi HDDs as well. (Alternatively you can burd an Ultimate Boot CD which includes HDD utilities from all HDD manufacturers. FTOOL is also there.)