IDF: Flat hybrid hard drives with larger flash cache
The circle of hybrid hard drive vendors is growing: After so far only with the Seagate Momentus XT with additional flash drive provided a buffer for shorter access times, and Toshiba recently announced a hybrid drive, here is Western Digital. The still unnamed 2.5-inch drive with a single slice will indeed have only 500 GB of magnetic storage, with an ultra-thin height of 5 mm but are also suitable for use in Ultrabooks. Western Digital is cooperating with Asus.
The thinnest notebook drives are so far about 7 millimeters high, the hybrid hard drives from Seagate and Toshiba soon as there are only 9.5-millimeter versions. WD equips its hybrid hard drive also made with a larger flash buffer to hold 32 GB in multi-level cell (MLC) chips. Seagate uses far more expensive, but more robust single-level cell (SLC) chips with only 8 GB capacity.
There hybrid drives store more frequently read from the magnetic disk data additionally so they load it from there with SSD speed. While Seagate's hybrid drive their flash buffer until now managed more self-sufficient, this should take over the WD Drive (also) the operating system. This suggests that the WD drive could support the first announced at the Flash Memory Summit Hybrid Information Protocol standard.
About the proposed Serial ATA protocol extension can drive or the operating system to address the flash cache of hybrid drives and drop specific data - such as well to fill the cache with data to anticipate what promises more speed. When the drive comes on the market, WD has not yet revealed.
At the Intel Developer Forum, which is currently taking place in San Francisco, shows WD prototype of its new hybrid drives, including the WD5000MPVK Black (500 GB, 7200 rev / min) and a drive from the blue line at 5400 r / min. In addition to the 500-gigabyte version is also a 1-TB specimen with 7-mm height in development. The size of the MLC flash buffer fits WD individually according to requirements of OEMs.
WD will deliver the plates initially only to handset manufacturers. They have a special micro-SATA connector.
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