The Joy of the Flash Drive
An anonymous reader writes "A post to the C|Net site covers the numerous benefits of flash drives, such as speed, temperature, and battery consumption. The perk author Michael Kanellos is most fond of? The distinct lack of noise. 'The notebook I'm testing--a Dell Latitude D830 with a 64GB flash hard drive from Samsung--hasn't emitted a sound in three days. Flash drives, which store data in NAND flash memory, don't require motors or spinning platters. Thus, there are no whirring mechanical noises. Compare that with my T42 ThinkPad. It sounds like a guinea pig got trapped inside, particularly during the start-up phase. Vzoooot. Cronk, cronk, cronk. Zip, zip. (Pause.) Gurlagurlagurla...zweeee. '"
It sounds like a guinea pig got trapped inside, particularly during the start-up phase. Vzoooot. Cronk, cronk, cronk. Zip, zip. (Pause.) Gurlagurlagurla...zweeee
I like the hard drive noises. Lets be honest here, they are soft clicks and chirps, not chainsaw noises. It gives me a non-visual feel of what the computer's up to.
-Grey
Silver Clipboard: Time Management Tips
"Vzoooot. Cronk, cronk, cronk. Zip, zip. (Pause.) Gurlagurlagurla...zweeee."
That's the pr0n your watching, not your hard drive dude.
Authority questions you. Return the favor.
Ought to be enough for anybody
I record my sleeptalking
Technically, they don't really become unreadable, there's just an uncorrectable bit flip or two (out of say, 128KB) and that block gets marked "bad" and then it's not used anymore. Whatever data it contained is still there though, and you could read it if you wanted to. That said, on an SSD there is an onboard controller that abstracts away the Flash itself, so I suppose that it might not provide any interface to reading "bad" blocks, other than that there's really nothing stopping you.
I remember when I had a Commodore 64, about 24 years ago, and solid state drives were 'just around the corner'. They have been lurking there for a VERY long time, but finally they arrived! I can't wait to get my hands on one. The next thing to emerge is Linux for the masses, which has been around the corner for about 12 years, if not longer. I'm very optimistic about that since the Eee PC turned out to be such a huge success last year. The future looks bright!
-- Cheers!
When you have that Intel chip that needs a fan that sounds like the Swamp Boat from the WaterBoy movie with Adam Sandler.
Every time I turn on my laptop and I hear the fan spin to life I think of that swamp boat and I can hear,
"My Mama says that alligators are ornery because they got all them teeth and no toothbrush."
"Wrong! Alligators are aggressive because of an enlarged medulla oblongata."
"No, Colonel Sanders, you're wrong. You're all wrong. Mama's right. Mama's right!"
"Somethin' wrong with his medulla oblongata."
I saw this link via The Inquirer - how to build your own from a bunch of RAIDed CF cards.
Assemble a SSD disk for less than 75 Euro
http://www.guru3d.com/article/memory/506
"Don't belong. Never join. Think for yourself. Peace." V.Stone, Microsoft Corporation
I've got a Sandisk Cruzer Titanium 4GB flashdrive. I've been using it since the day they were available in stores. As such, I've always kept it with me in my pocket. This wouldn't be a problem, except it's always exposed to heat and sweat. To make matters worse, I've thrown my pants in the washer and dryer *with* the drive about five times now.
It still works. I write and erase on the flashdrive almost daily. I easily copy 100MB files to it. No problems detected yet.
Dare I wash it for the sixth time?
Life is not for the lazy.
I've been looking for Flash drives for a while now, and it seems the best option at the moment perfomance wise is the Mtron Pro series at 120Mb/sec. But 32 gigs will cost you 1129.
Which is why I wonder how Dell and Apple and everyone else can provide 64 gig SSD options for their notebooks for less than 1000 dollars. None of the brands had any info on the specs of the drives easily locatable, and I am worried these are the low end SSDs that are much much slower... which is a shame, because performance driven users would probably prefer better drives even for an extra 500 to 1000 dollars.
Later this year Intel is suppose to release 200Mb/sec 80G drives, which is really the only reason I haven't gotten one yet, but I have yet to find any info on pricing.
Flash media is considerably slower than hard drive media at the same price point. This is mainly due to economies of scale: there is a huge demand for low cost, moderately high performance desktop and laptop hard drives, while the demand for flash is for dirt cheap, low performance usb fobs. This is likely to change over time, but it will take years. Production methods for low unit-cost, high performance flash chips have to be developed, fab plants have to be built, all the usual problems.
Flash media (NAND-gate type) is fundamentally slower than hard drives for sustained serial write behaviour, where the seek penalty does not apply. This is not likely to change, since performance for both technologies should increase at roughly the same rate; so long as NAND-gate technology is the best we have, hard drives are still going to be around for those workloads that need that kind of thing (various forms of audio/video work, some database stuff, scientific applications). It's faster for the other major operating modes (all read modes, random-access-write, latency, etcetera), so is likely to give overall better performance for desktop computing workloads. There are experimental technologies in the labs that can outperform hard drives in the sustained serial write mode, but those aren't on the market yet, and may never be. They've been promising us MRAM for twenty years now, and still haven't come up with a product.
Limitations in current flash products mean that everything on the market is also slower than hard drives in the random-access-write mode. That's a problem with a known solution, there just isn't anything on the market that does it yet. This should change in the next generation or two.