Check out AT&T's FREE camera phones- Related Stories
-
Intel cuts PC boot time
October 17, 2005
A hybrid hard drive is a hard drive that contains a flash memory chip that stores data and applications. Because the processor can retrieve data from flash, the drive--which spins constantly in an ordinary computer--can stay asleep most of the time.
Spinning drives are one of the most power-hungry components in a computer, so allowing it to idle will lead to about an extra half-hour of battery life on a notebook, said Don Barnetson, director of flash memory at Samsung Semiconductor. "We can cut about 70 to 90 percent of the power consumption" of hard drives, he said.
The drive will also be less prone to break down, he added. Boot-up time is also decreased, because applications can be retrieved from much speedier flash memory, which takes only a few milliseconds. Although slower, the drives can store more data for less money.
The flash chips will perform a couple of different functions. When consumers write a word-processing document, the data will go straight to flash. When the flash chips are almost full, the drive will wake up and take the data. Some PC makers will also likely embed media or music players along with other commonly used applications to ensure that boot time will be somewhat rapid.
Intel is working on a similar concept called Robson that lets the processor pull data out of flash. Although the end result is the same, the interaction among flash, the processor and the drive in Robson are different, Barnetson said.
South Korean electronics giant Samsung showed off a prototype of its hybrid hard drive last year at WinHec. This year, the company will show off the commercial version of the drive at the show, which takes place next week.
Samsung's hybrid drives, which work with Microsoft's Vista, will come in a variety of capacities when they appear in computers next year. The drives, though, will contain either 128MB or 256MB of Samsung's OneNAND flash memory. OneNAND is much faster than typical NAND memory.
Samsung will make the drives themselves but also coach other drive makers on how to incorporate its flash into their drives. (Samsung is the world's largest NAND flash maker, and OneNAND is a proprietary twist available only from the company.)
Technically speaking, hard drives already come with flash inside them, said Barnetson, but not enough to store applications or data.
The hybrid drives will be marketed under the ReadyDrive moniker, which is a Microsoft brand name. Notebook specification sheets thus will likely say something like "100GB drive enhanced with Windows Ready Drive."
Samsung is also working with Microsoft on ReadyBoost. In ReadyBoost (also known as EMD), a flash memory key stuck into a computer can act as supplemental main memory. With this technology, it will be easier to load Windows Vista, the upcoming update of the operating system, onto current computers. Vista will require more memory than Windows XP. One problem that Microsoft has had in the past is that consumers don't upgrade the operating systems on their existing computers much, because a software upgrade would entail a hardware upgrade.
See more CNET content tagged:
flash memory,
Samsung Electronics,
NAND,
hard drive,
notebook computer
Flash memory is life-limited - wouldn't a drive writing to flash memory burn through 100,000 or so read-write cycles in a relatively short time?
Is this a pay-me-now-or-pay-me-later situation? You get longer battery life now, but your hard drive starts corrupting your data after year and a half (or, just outside the warranty period)?
"Like all flash memory devices, flash drives can sustain only a limited number of write/erase cycles before failure. In normal use, mid-range flash drives currently on the market will support several million cycles, although write operations will gradually slow as the device ages. This should be a consideration when using a flash drive as a hard drive to run application software or an operating system."
http://en.wikipedia.org/wiki/USB_flash_drive
PS: I think there's an error in the story. I'm sure the author meant "Boot-up time is also REDUCED,"
The idea of a hybrid drive is great, the implementation that requires Vista "because of the interaction between the processor, flash, and disk) is a bad idea.
It sounds like yet another thing that sounds good on paper (fater, power saving, etc), but is actually the reverse in the real world because of the added processor load.