On Feb 14, 2009, at 12:45 PM, Nicholas Lee wrote:
A useful article about long term use of the Intel SSD X25-M: http://www.pcper.com/article.php?aid=669
- Long-term performance analysis of Intel Mainstream SSDs.
Would a zfs cache (ZIL or ARC) based on a SSD device see this kind
of issue? Maybe a periodic scrub via a full disk erase would be a
useful process.
Indeed SSDs can have certain properties that would cause their
performance to degrade over time. We've seen this to varying degrees
with different devices we've tested in our lab. We're working on
adapting our use of SSDs with ZFS as a ZIL device, an L2ARC device,
and eventually as primary storage. We'll first focus on the specific
SSDs we certify for use in our general purpose servers and the Sun
Storage 7000 series, and help influence the industry to move to
standards that we can then use.
Adam
--
Adam Leventhal, Fishworks http://blogs.sun.com/ahl
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