On Jul 21, 2009, at 12:49 PM, Bob Friesenhahn wrote:
On Tue, 21 Jul 2009, Andrew Gabriel wrote:
The X25-M drives referred to are Intel's Mainstream drives, using
MLC flash.
The Enterprise grade drives are X25-E, which currently use SLC
flash (less dense, more reliable, much longer lasting/more writes).
The expected lifetime is similar to an Enterprise grade hard drive.
Yes, but they store hardly any data. The X25-M sizes they mention
are getting to the point that you could use them for a data drive.
With wear leveling and zfs you would probably discover that the
drive suddenly starts to wear out all at once once it reaches the
end of its lifetime. Unless drive ages are carefully staggered, or
different types of drives are intentionally used, it might be that
data redundancy does not help. Poof!
Eh? Would you care to share how you calculate this?
-- richard
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