Dieter wrote:
They claim to have solved that issue. There are plans to use flash
memory for the buffer on a hard disk -- the hybrid disk drive.
I haven't been following these devices closely. Did they really solve it,
or just get it good enough to get by for a few specific applications for a
couple years or whatever the life expectancy of consumer electronics is
these days?
Note my skepticism "they claim".
SanDisk states that their cards have error detection and correction just
like a HD does. So, this would deal with single bit failures.
They have just come out with a SSD that is 32 GBytes and 1.8 inch form
factor. For this they claim 1 in 10^20 error rate and a product life of
43,800 hours or 5 years.
I think the idea for the hybrid disk drive is to put the stuff
you need for booting
I don't need a HDD for that, I can just use a compact flash card and an
IDE/ATA adapter for that.
and a few common apps on the semi. and then you don't
have to spin up the disk very often, for "typical" users. Useful for a
laptop to reduce battery drain.
I think that the idea was to use the flash memory as a cache that would
have the most often used files on it. MS is talking about pushing this
for desktop workstation and I don't see how this is going to help much
if the flash drive isn't much faster than the disk.
Which is the intended market for their SSD. It supports DMA-7
(100MBytes/sec) so it would be faster than my hard drive due to the
shorter seek time. This would be good for a disk less machine, but
wouldn't help much to speed up a system that had a hard disk.
--
JRT
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