Feeds

WD fattens up S25 with third juicy platter

3G drive swells up to 900GB

Application security programs and practises

The third generation S25 drive from Western Digital has had a third platter added to reach the 900GB capacity point.

WD's S25 is a 2.5-inch enterprise disk drive spinning at 10,000rpm with a 6Gbit/s SAS interface. It comes in 150, 300 and 600GB capacity points and competes with Seagate's Savvio 10K – the 10K.4 600GB version of which has three 200GB platters compared to the second generation S25's 600GB with two platters.

However Seagate announced a 900GB Savvio 10K.5 in March last year, with 3 x 300GB platters using 506Gbit/in2 areal density, and a self-encrypting drive (SED) option. Then Hitachi GST went the 3-platter route with its Ultrastar C10K900 drive, with SED and the 6Gbit/s SAS interface. WD had to raise its game. There were two possible routes: move to 450GB or 500GB platters and produce a 900GB/1TB SV25 or go the added platter route.

It has chosen to add platters and the third generation SV25, with 300, 450, 600 and 900GB capacity points and 32MB cache, also has the SED option. Its transfer speed is 204MB/sec, compared to the second generation S25's 128MB/sec, and WD says it has a 2 million hour MTBF rating, an industry high.

Seagate's Savvio is unique among this 3-platter threesome in that it has a 4Gbit/s Fibre Channel interface as well as the SAS one. As Fibre Channel disk connectivity is thought to be on the way out, that is likely to remain a Seagate-only attribute.

With WD buying Hitachi GST and the acquisition being closed tomorrow, why has WD introduced a drive that competes with the Hitachi GST Ultrastar? It's surely partly because the Chinese competition regulators require Hitachi GST to operate independently of WD for two years, which includes separate research and development activities, and so we will have the ludicrous situation of a parent competing with its own arms-length subsidiary.

This S25 move sparks off thoughts of a 900GB Velociraptor, since Velociraptor is a10K, 2.5-inch drive with 150GB to 600GB capacity points and two platters. Its users would sure appreciate the added data velocity a third platter would give them. ®

Bridging the IT gap between rising business demands and ageing tools

More from The Register

next story
Apple fanbois SCREAM as update BRICKS their Macbook Airs
Ragegasm spills over as firmware upgrade kills machines
Auntie remains MYSTIFIED by that weekend BBC iPlayer and website outage
Still doing 'forensics' on the caching layer – Beeb digi wonk
Attack of the clones: Oracle's latest Red Hat Linux lookalike arrives
Oracle's Linux boss says Larry's Linux isn't just for Oracle apps anymore
THUD! WD plonks down SIX TERABYTE 'consumer NAS' fatboy
Now that's a LOT of porn or pirated movies. Or, you know, other consumer stuff
EU's top data cops to meet Google, Microsoft et al over 'right to be forgotten'
Plan to hammer out 'coherent' guidelines. Good luck chaps!
US judge: YES, cops or feds so can slurp an ENTIRE Gmail account
Crooks don't have folders labelled 'drug records', opines NY beak
Manic malware Mayhem spreads through Linux, FreeBSD web servers
And how Google could cripple infection rate in a second
prev story

Whitepapers

Top three mobile application threats
Prevent sensitive data leakage over insecure channels or stolen mobile devices.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Top 8 considerations to enable and simplify mobility
In this whitepaper learn how to successfully add mobile capabilities simply and cost effectively.
Application security programs and practises
Follow a few strategies and your organization can gain the full benefits of open source and the cloud without compromising the security of your applications.
The Essential Guide to IT Transformation
ServiceNow discusses three IT transformations that can help CIO's automate IT services to transform IT and the enterprise.