Feeds

Crucial releases really skewed cheap flash drive

64GB RealSSD

Next gen security for virtualised datacentres

Lexar has announced a 64GB version of its Crucial RealSSD flash drive with enormously skewed read and write rates.

The 2.5-inch format product is a dwarf compared to its 128GB and 256GB counterparts, and a comparative sluggard at writing.

The 64GB version uses the same multi-level cell flash from Micron as the other two but there is obviously much less of it, so the scope for parallelism is reduced. It has the same fantastic 355MB/sec sequential read rate and a 50,000 random read IOPS rating, with 4K blocks, equal to the 128GB unit, but its sequential write rate is a derisory 70MB/sec, and its random write IOPS rating is 15,000. The 128GB product's is 30,000 and the 256GB product's is 45,000.

The sequential write bandwidth for the 128GB and 256GB products are 140MB/sec and 215MB/sec respectively. According to Micron SSD spokesman Ben Thiel, quoted in a Micron blog, the reason for the skewed read and write performance on the 64GB product is "parallelism".

Thiel went on to say: "As we add more NAND die to the C300 platform, the drive can perform more parallel transactions, which increases write performance.

"The other capacity-specific difference is the amount of over-provisioning that is available. Over-provisioning essentially refers to 'spare area' that is reserved for background operations that are fundamental to the drive’s performance. NAND natively has around 6 percent over-provisioning built in, so as SSD capacity goes up so does the corresponding percentage of over-provisioning. This increase in 'spare area' results in greater performance in the larger capacity drives."

The 64GB product is comparatively cheap at $149.99 (about £121.00), and is intended as a boot drive and application loader, not a general read/write device, for consumer notebooks. It also has a 6Gbit/s SATA interface, and the sequential read rate drops to 265MB/sec with SATA II and its 3Gbit/s, which is what the majority of notebooks use. Still, that's not exactly slow compared to a hard disk drive. ®

The essential guide to IT transformation

More from The Register

next story
The Return of BSOD: Does ANYONE trust Microsoft patches?
Sysadmins, you're either fighting fires or seen as incompetents now
Microsoft: Azure isn't ready for biz-critical apps … yet
Microsoft will move its own IT to the cloud to avoid $200m server bill
Oracle reveals 32-core, 10 BEEELLION-transistor SPARC M7
New chip scales to 1024 cores, 8192 threads 64 TB RAM, at speeds over 3.6GHz
US regulators OK sale of IBM's x86 server biz to Lenovo
Now all that remains is for gov't offices to ban the boxes
Object storage bods Exablox: RAID is dead, baby. RAID is dead
Bring your own disks to its object appliances
Nimble's latest mutants GORGE themselves on unlucky forerunners
Crossing Sandy Bridges without stopping for breath
prev story

Whitepapers

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.
7 Elements of Radically Simple OS Migration
Avoid the typical headaches of OS migration during your next project by learning about 7 elements of radically simple OS migration.
BYOD's dark side: Data protection
An endpoint data protection solution that adds value to the user and the organization so it can protect itself from data loss as well as leverage corporate data.
Consolidation: The Foundation for IT Business Transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?