5 Replies Latest reply on Sep 17, 2009 8:10 AM by w00thisButtonDo

    Limited write (erase) cycles

    Fluffy

      Hi, I would like to know how many write cycles typical MLC flash memory can sustain. Is it around the endurance of  10,000 cycles?

        • 1. Re: Limited write (erase) cycles
          jdr2006

          When the intel ssd toolkit is available for release, one can see the S.M.A.R.T attribute "Media Wearout indicator". This count goes from 100 down to 1, where 1 is when it reached the max number of erase cycles. My officemate who is using his Gen1 SSD for 8 months now (heavy user), the wearout indicator is at 96. This means that only 4 wear-indicator units got used in 8 months. This translates to a useful life of 16 years. Intel did a good job on wear-levelling and write amplification algorithms.

          • 2. Re: Limited write (erase) cycles
            w00thisButtonDo

            A little bit more information... informal, not from Intel

            Specific attributes possibly used by Intel

            232 - Endurance Remaining aka "Media Wearout indicator".

            233 - Unknown

            and Reallocated Sector Count used as non-standart implementation (no RAW data, parameter grows up) to count used "spare flash"

            More information is not avaible for public today

            • 3. Re: Limited write (erase) cycles
              jdr2006

              Intel product Manager quoted that the mlc cells used in the intel ssd can go up to 100,000 erase cycles. http://blog.laptopmag.com/intel-product-manager-talks-ssds

              • 4. Re: Limited write (erase) cycles
                emoacht

                JFYI, an Intel representative said on September 12 in Akihabara that Intel would release "Intel SSD Toolbox" hopefully in Q4, until public release of Windows 7.  He showed a screenshot of the "SSD Toolbox" and touched on  three SMART attributes related to SSD end of life, namely E1: Host Writes ("LBA's written" in the screenshot), E9: Media Wearout Indicator and E8: Available Reserved Space.  The screenshot can be seen in a Japanese site.

                 

                So, I think information on Intel SSD's remaining life time can be checked in very near future.

                • 5. Re: Limited write (erase) cycles
                  w00thisButtonDo

                  So it's just HEX, we can convert it to decimal and use any S.M.A.R.T.  tool to check it now

                  E1=225=Host Writes "LBA's written"

                  E8=232=Available Reserved Space

                  E9=233=Media Wearout Indicator

                   

                  Message was edited by: w00thisButtonDo