
I've been lamenting the loss of lower power, slower drives since the Bigfoot went away. Slower storage started reappearing as second and third tier storage for datacenters, so it was only a matter of time til we got some I guess.
Interesting indeed. The whitepaper seems to imply though it has to fully ramp up to 7200rpm before access is possible again (granted anything else would be very difficult to do). Certainly this implies access times in the order of seconds after the drive has entered this mode. I wonder how that compares to access times after the drive has been put in standby mode?MikeC wrote: Low rpm idle, which is what the WD Greenpower PR implied, is actually implemented here: The drive slows to 4200rpm!
Unlikely to happen. USB provides a maximum of 0.5A @ 5V. Two cables gives you 1A = 5W. We know the drive consumes more than this in regular use.LAThierry wrote:Since this 3.5" drive has such low power, it would be very nice to have a USB HD that includes it. Maybe we could finally get rid of those ugly power bricks, simply giving it power with a double USB cables...
For those who don't know. Increased platter density means faster performance on top of more capacity.320 GB-per-platter technology will be deployed across WD's desktop, enterprise, CE and external hard drive product lines, including additional capacity points, throughout this calendar year. [2008]
areal density ... [has] an influence on both positioning and transfer performance
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WD Caviar® GP Series
Cap N.O. Shock Idle dBA Seek0 dBA Seek3 dBA R/W Watts Idle Watts Standby Watts Sleep Watts Vibration
WD5000AACS 500GB 300G 24 29 25 6.0 3.3 0.97 0.97 0.004 g²
WD7500AACS 750GB 250G 25 27 25 7.5 4.0 0.30 0.30 0.008 g²
WD10EACS 1TB 250G 25 27 25 7.5 4.0 0.30 0.30 0.008 g²
floffe wrote:As much as I'd like to say Tom's is wrong, if you read up to the last page of the review they clarify that "t can run at speeds between 5,400 RPM and 7,200 RPM, which WD defines at the factory, to save energy whenever high performance isn't needed", so the word "dynamically" is kinda misleading. Basically it's WD saying that they might release 5400rpm and 7200rpm drives in the same series, without necessarily saying that they're changing anything.
It's the ideal HTPC drive. I've got one in my PC along with a dual digital HDTv tuner card (so I do things like watch and record at the same time). It doesn't feel any slower than any previous drive i've had. I've never heard of the hard drive being the limiting factor for watching and recording HDTV.LorenzoS wrote:I've been considering a 500GB WD5000AACS GreenPower drive for an HTPC build. Will this drive be fast enough to record and play multiple High Def TV recordings simultaneously? That would be the most performance I would need.
I recently purchased a WD7500AACS and it makes a random clicking noise, it seems to happen more when the drive is being accessed or just after it has been accessed.Besides idle and seek noise, the Green Power produced one more noise: A pair of sharp clicks whenever the heads were loaded or unloaded (that is, whenever the drive went into or came out of idle mode).