SDXC

Does anyone else out there find it hard to believe the next generation of SD cards will have a capacity of up to 2 TB ?

To be honest I find it staggering.

http://www.sdcard.org/developers/tech/sdxc

Cheers,

/Ian.

Well,that`s going to make transportation of data alot easier but it`s not going to be a "plus" in all walks of life.

Didn`t someone say somewhere that size doesn`t matter..he he he...seriously though,I think I`ll stick with the 1GB or 2GB SD cards I`ve got until they need replacing.

Nic

Not really though and BTW it's the standard that support up to 2TB, they still need to make such cards I believe.

That's what was said about 16gig cards a few years back Stefan.

Keep watching, the memory firms will do it.

When they do watch laptops and notebooks adopt the cards as a main drive.

Not with windows though ...

The technology used in SD memory has a finite number of read/write cycles and windows continuously uses the same sectors on a hard disk for short term storage. If the OS remainined on a HDD but of a micro size then SDXC cards could used for data storage.

Polchraine: Actually, flash memory used in SD cards has finite write cycles. Read cycles are practically infinite (Give or take a few little details)
And even then, the wear leveling technology between the "drive" interface and the flash is extremely good. So, even though the OS may think it's writing to the same sectors - it actually isn't

In practice, flash based hard drives out perform real hard drives, and can out last them as well!! At the moment they're more expensive, but the price is coming down as demand increases

(I could bore you all silly with flash technology stuff - it's my day job )
Matt

Flash hard drives already exist (EEE PC), and I haven't heard of many failures, despite millions having been sold.

G

I was involved with a project being undertaken by one of my suppliers. Vibration was a problem and HDDs were often only lasting a couple of years and they tried using Flash memory instead and found that the failure rate was higher and that they often failed after a year or so of usage - and sometimes after just a few months.

I am involved with magnetic bearings for the gas industry and our controllers consist of a single board computer with flash drives. We only survive by our reputation for reliability.

Had an article (somewhere) that described the differences between flash & HDD storage. A well designed flash storage device will definitely last - even with massive write counts.

However, as with all things, there are plenty of ways of short-cutting the process to save costs (but reducing long-term reliability). For sure, not all flash-based-HDD replacements are created equal

But we're getting a bit OT now...
Matt

I didn't said they will not do it, I only said that it is about the standard and not about the cards them self.

Of course they will come with 2TB and even bigger, it's only a matter of time.

HVD for example might hold up to 6TB and a transfer rate of 1 Gbit/s, only a matter of time we will have those in our computers instead of DVD (BD)

You make one little remark about possible usage and look what happens!

Just go to back to my original post, am I the only person here who finds it amazing it will be possible to put 2 TB on a card that small ? The micro SDCX card is just 15mm x 11mm x 1mm.

Perhaps I'm just getting old. When I went to secondary school our computer science department consisted of one Commodore PET 2001, which only the brightest students were allowed near. (I was not among them !)

link

Cheers,

/Ian

Times are changing fast Ian

But we don't know that it will be possible. That is just the theoretical maximum allowed for in the spec.

It is too early to get amazed!

G