Hi all, long time lurker, first time poster. As SSD per-GB prices continue to drop at a healthy rate I''ve been thinking more and more about the benefit of creating pools out of SSDs rather than HDDs. My virtualization hosts seem to have at least a 2x dedup ratio, but I''ve been cautious on dedup due to the reports here of much more random I/O. I''m wondering what experiences or input some might have already had in running SSD pools and if doing so might be a "magic pill" to make some zfs features such as dedup and/or wider vdev stripes mostly pain free? My assumption is that the SSD pool could handle the higher random I/O requirement without really needing to worry so much about ARC or L2ARC requirements for dedup. Would this be true? If I wanted a pool that spans multiple chassis, should I be concerned about elevated IOPS rate if I were using a handful of JBOD/SAS expanders each connected with an external 6gbit link? Anything else I might be overlooking? Any input would be appreciated! Thanks, Tyler -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.opensolaris.org/pipermail/zfs-discuss/attachments/20130205/25f6f324/attachment.html>