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32 GB Flash Storage Drive Announced
Audrius writes to tell us TG Daily is reporting that Samsung has just announced a new 32 GB Flash storage device. The aim of this new solid state disk (SSD) drive is to completely replace the traditional hard drives in many laptops on the market. Some of the advantages offered are the 1.8" form factor, read speeds more than twice that of a normal hard drive, and the promise of 95% less power use.
This will only work if they can get the prices of flash down.
$50.00~70.00 per gb is still nothing in comparison to $0.40~$0.80 you can get on hard drives.
If you RTFA you would see the target price is $750 and $1000 ... $6400 is the price of current flash hard drives in that size range.
During heavy disk read activity, the HD is only uses 15% of all the power. (source) The real key to decreasing laptop power consumption is dimming the screen, which can reduce power consumption percentage from 26% down to 7%.
This technology has already been put to use in a commercial environment, and has given outstanding performance from what I've seen. The game EVE Online http://www.eve-online.com/ has already done this with their clustered servers and greatly reduced the lag. Keep in mind that this is a game where there is only a single universe (No shards or other servers) and they quite often push over 20,000 simultaneously logged in accounts at a time.
When placed in the right environment, this technology just screams. A good example would be for huge database operations that have hundreds if not thousands of concurrent accesses. The databases that maintain the pay information for the US Military come to mind easily.
The author is talking about 1.8" hard drives like what is used in the iPod. I don't know about you but I have seen Apple selling any 400gb iPods yet...
It estimated to cost$700 - $1000. While this may seem like a lot, for something new, this isn't. I remember reading how much a hardrive would have cost for an old IIGS that had maybe 8 disks worth of storage space I think. And although expensive, $700 isn't expensive enough to be out of the reach for consumers. Just expensive enough to be out of the reach for most sane typical consumers.
In undeveloped countries, the consumer controls the market. In capitalist America, the market controls you.
Price point on the 32gb drive is expected to be $750-$1000. The $6400 product is a currently available military grade drive. It'll take a wee bit more abuse and temperature range then the 'cheapest bidder' built one that will hit the commecial market.
-Rick
"Most people in the U.S. wouldn't know they live in a tyrannical state if it walked up and grabbed their junk." - MyFirs
Most flash can handle something like 100,000 erase cycles. And most flash file systems have wear-leveling algorithms to ensure you're not hitting the same sectors over and over. Even with standard usage they should be good for several years at the very least.
Flash memory that works has a much longer MTBF than hard drives, but each cell fails at approximately 10000 writes. HDDs fail randomly, Flash fails predictably, so this can be a good thing. Just make sure your filesystem rarely does or needs defragging, and does not log every read.
The device you link to has only 2.5" and 3.5" form factors available. This device fits in a 1.8" form factor. Nice try, though. I can see why you post as an AC.
"You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
This is certainly a valid worry. As I understand it, however, modern flash memories have more or less dealt with this problem, because:
(1) The number of rewrites is now quite large (hundreds of thousands?)
(2) The writing-to-disk software/hardware implements "load balancing." If you rewrite the same file 1000 times, it won't use the same exact block on the flash disk for each of those writes. Instead it will move from block to block with various writes/deletes/modify actions. This, coupled with some "slack" (the actual disk size is a little bit bigger than the "useable" disk size) allows for the wear to be distributed over the whole device.
(3) The system uses conventional error-correction and flagging of bad blocks.
As another poster pointed out, magnetic hard disks also have a limited number of rewrite cycles. But in practical terms we usually don't reach this limit. For critical applications I imagine you'd use a RAID of flash disks just like a RAID of magnetic drives.
Actually, this won't work. The wear levelling doesn't know if a block is 'full' or not, so it will just switch the contents of a pair of blocks. Your frequently-written file will move all over the flash chip(s), and so will your static files.
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The nice thing about Flash is that after a cell has failed, it just becomes read-only. You can get around this quite easily in the OS by just marking the failed block as bad in your inode list. Over time, your flash drive will shrink in capacity. When it gets too small, you just copy it over to a new one and repeat the process.
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