Re: flash memory reliability

From: someone (someone_at_somewhere.com)
Date: 01/04/05 

Date: Tue, 4 Jan 2005 10:21:23 -0600

Pretty much every flash card description I've seen has said 'reliable up to
100,000 rewrites' so you will be fine with a year worth of writes (~36,500)
also keep in mind that this is for each byte on the card so some spots will
deteriorate faster than others so they would well surpass the 100,000 mark.
As long as your cards are of a reliable brand then you should have no
problem.

"Andrea" <Andrea@nospam.it> wrote in message
news:Opi$$Cl8EHA.3592@TK2MSFTNGP09.phx.gbl...
> Sorry if this was already answered, but I have not found any trace of this
> question on google...
> Basically, I need to store a database on a WinCe/PocketPC device.
> Apart the software used, we need a reliable data store (that survive a
> power loss, warm/cold reset).
> For this we will provide a sd flash card. But this card (and I think every
> flash card) have a maximum number of cycles life.
>
> We are afraid of the long term reliability of these sd cards.
> There is some differencies in sd card (there is some card more reliable
> than others?)
> Does anyone have some experience in card reliability (for example running
> over one year with about 100 database writes a day)?
> There is reliability differencies from external sd card and internal flash
> memory that I have found in some device ?
> Where I can find some informations on this subject ?
> There is a way to detect some sort of card status in order to advise the
> user of the exausted life of the memory ?
>
> Best regards,
> thanks in advance for any infos
> Andrea
>

Relevant Pages

  • Need help regarding flash memory options
    ... does not have an external memory interface. ... I realize I could simply place a card reader slot on ... I wish to keep cost down by any means possible. ... of a SD flash card proprietary or does someone sell the chip/chipset? ...
    (sci.electronics.design)
  • Re: Need help regarding flash memory options
    ... does not have an external memory interface. ... The micro does have a SPI buss. ... I realize I could simply place a card reader slot on ... of a SD flash card proprietary or does someone sell the chip/chipset? ...
    (sci.electronics.design)
  • Re: Garmin 2620 Map Loading Error
    ... they generally apply incremental improvements ... :>> enhance functionality and reliability. ... the failure rate for CF cards is 0.1%, and for hard drives is 0.3 percent. ... If I but the CF card in a card reader everything is there. ...
    (sci.geo.satellite-nav)
  • Re: SD memory card with a tether? Public application...
    ... it runs well on a 32meg 133mhz Jornada 548 installed on the memory card. ... If the Adobe source is on a memory card at the conference, I have to stick it in my PDA to install it. ... Unless I have two memory card slots, or sufficient free internal memory, I can't use a flash card to install it. ...
    (microsoft.public.pocketpc)
  • Re: flash memory reliability
    ... Thanks for the infos ... ... > Pretty much every flash card description I've seen has said 'reliable up ... >> We are afraid of the long term reliability of these sd cards. ...
    (microsoft.public.pocketpc.developer)