Doug Hughes wrote: >I'm not sure why you say that flash is slow. Any recent flash, say the >last 2 years, is MUCH faster than spinning media in all dimensions. For >example, try putting a ZIL (ZFS intent log) on flash media and watch >your NFS meta-data operations go from moribund to zoom. Wear levelling >is a concern but is becoming less of one over time. Sun is partnering >with a vendor on flash with 1 million write cycles. If you have that and >a 30 or 80GB flash, it would last years even under relatively hostile >circumstances.
Flash reads are reasonably fast, I agree. Writes are not in my experience. And one probably writes to swap at least as often as one reads from it. "Years" sounds like a long time. But many embedded systems are intended to remain in service for ten years or more. A worn-out flash memory after eight years (for example) would not be fun. -- Dave Close, Compata, Irvine CA "You can't go to Windows Update [email protected], +1 714 434 7359 and get a patch for stupidity." [email protected] -- Kevin Mitnick _______________________________________________ Discuss mailing list [email protected] http://lopsa.org/cgi-bin/mailman/listinfo/discuss This list provided by the League of Professional System Administrators http://lopsa.org/
