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Print 55 comment(s) - last by mcnabney.. on Jan 29 at 8:37 PM

Western Digital cracks the 2TB barrier

Western Digital has announced its latest drive, a 2 Terabyte Caviar Green hard drive with 32 MB of cache and a seek time of 8.9ms. It runs between 7200 or 5400 RPM depending on load, which saves power.

Due to advances in Perpendicular Magnetic Recording (PMR), it is able to achieve this using a four platter design, with 500 GB per platter. Having fewer platters reduces power consumption as well.

WDC's previous capacity champion was only 1TB, so this new flagship has been anticipated for use in DVRs and archival systems. The model number is WD20EADS, and is being shipped to distributors this week.

In addition to the 2TB model, Western Digital is also launching a 1.5TB model (WD15EADS) to accompany its revised 1TB model (WD10EADS). Both also feature 32MB of cache, which helps to increase access speed to commonly accessed data.

"While some in the industry wondered if the end consumer would buy a 1 TB drive, already some 10 percent of 3.5-inch hard drive sales are at the 1 TB level or higher, serving demand from video applications and expanding consumer media libraries," said Mark Geenen, President of Trend Focus.

WDC's primary competitor Seagate recently unveiled their Barracuda 7200.12 series of 3.5" desktop drives, featuring a 1TB 2 platter design. It is available with 32MB of cache as well.

Seagate is being particularly cautious these days, after firmware problems with the flagship Barracuda 7200.11 series of drives caused problems with RAID and Linux setups, and lowered prosumer confidence in the world's leading hard drive supplier.

Its Barracuda 7200.11 1.5TB drive (ST31500341AS) was previously the largest single hard drive available to consumers, and the only one to go above 1TB.

Seagate may very well release their own 2TB 7200.12, but they still haven't been able to supply the Momentus 7200.4 500GB laptop drives that they announced six months ago on July 10.



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By therealnickdanger on 1/27/2009 11:02:42 AM , Rating: 2
About the only drawback to having such massive hard drives is that it is equally a lot of data to lose . I hope anyone that is buying these drives has the intelligence to buy at least two and RAID-1/5/6/10.


RE: Nice to have high end products, but...
By TomZ on 1/27/2009 11:19:40 AM , Rating: 2
One word: backup.

And BTW, a 2TB HDD makes an awesome backup medium.


By VooDooAddict on 1/27/2009 12:17:58 PM , Rating: 2
Exactly this single drive can make a great backup medium.

As a comment to the parent though ... this is NOT a good solution to use in RAID. The alternating spindle speeds arn't synched between all drives in the raid set.

If they used a fixed 5400 or fixed 7200 than I'd be more comforatable with it.

As it is though ... as a single drive (internal or external) to backup an existing RAID set this is very cool.


RE: Nice to have high end products, but...
By Spivonious on 1/27/2009 11:55:58 AM , Rating: 2
RAID 5 would require at least 3. ;)


RE: Nice to have high end products, but...
By Etsp on 1/27/2009 11:59:47 AM , Rating: 2
So would RAID 6, and RAID 10 would require 4... Hence why he said "at least" with the number of drive changing depending on the type of RAID being used.


RE: Nice to have high end products, but...
By SunAngel on 1/27/2009 12:00:51 PM , Rating: 1
I run Intel Matrix Raid and I only needed 2.


By TomZ on 1/27/2009 12:08:07 PM , Rating: 2
...for RAID5? AFAIK that always requires 3 or more HDDs.


By VaultDweller on 1/27/2009 12:19:06 PM , Rating: 2
Then you're not using RAID-5.


By feraltoad on 1/27/2009 11:50:11 PM , Rating: 2
I use RAID-Apple/Peaches/Pumpkin Pie.


By glennpratt on 1/28/2009 12:19:35 AM , Rating: 2
Just remember, RAID is not a backup. For most people RAID should be the second step, after a reliable backup system.


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