My question is about SSD, and the differences between use SLC for
readzillas instead of MLC.
Sun uses MLCs for Readzillas for their 7000 series. I would think
that if SLCs (which are generally more expensive) were really
needed, they would be used.
That's not entirely accurate. In the 7410 and 7310 today (the members
of the Sun Storage 7000 series that support Readzilla) we use SLC
SSDs. We're exploring the use of MLC.
Perhaps someone on the Fishworks team could give more details, but
by going what I've read and seen, MLCs should be sufficient for the
L2ARC. Save your money.
That's our assessment, but it's highly dependent on the specific
characteristics of the MLC NAND itself, the SSD controller, and, of
course, the workload.
Adam
--
Adam Leventhal, Fishworks http://blogs.sun.com/ahl
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