[Beowulf] SSD prices - q: how many writes/erases???
landman at scalableinformatics.com
Thu Dec 18 06:03:19 PST 2008
Jeff Layton wrote:
> Nifty Tom Mitchell wrote:
>> On Fri, Dec 12, 2008 at 04:35:26PM +0100, Peter Jakobi wrote:
>> Sun and Micron recently reported a million plus cycles for a single
>> level flash
>> product. Current shipping product is on the order of 100000 cycles.
> From what I understand these were cherry picked parts from
> a normal production run. Has anyone heard if this is a new
> production process or a new concept in SSDs? BTW - Samsung
> has reported 500K rewrites from cherry picked parts.
I thought the Samsung parts were actually a production run (low yield).
I hadn't heard that they had done a cherry pick on the existing process.
> If they are cherry picked, then it's not really a turning point
> in SSDs. It also bothers me that a normal production run can
> have parts with rewrites at 100K and 1M. Sounds like there
> are some variabilities that can't be controlled.
Similar things happen with RAM.
> Don't forget that 100K rewrites are SLC products and MLC's
> are general 10K. Although the Intel drives state 100K with
> MLC (and pretty decent performance). I'm not sure of the
I can't find the Intel P/E cycle, but the Ridata units are 2x10^6 (2E+6).
Joseph Landman, Ph.D
Founder and CEO
Scalable Informatics LLC,
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