![]() The OpenIndy boxes write for a bit, then stop, then write for a bit, then stop. The Linux boxes hit the disk all the time. My theory on that is that ZFS is doing a much better job of caching writes, then writing out sequentially to disk, than whatever Linux is doing. The Ubuntu boxes get less than half that. I get near wirespeed on the OpenIndy boxes. These guys are getting hit with constant random reads and writes from about 40 other boxes as fast as they can read and write. Similar hardware specs and storage amounts on all the boxes (good old Q6600's, 8GB RAM all around, sasuc8i and lsi cards, mostly 2TB drives). The Ubuntu boxes all give me kernel panics every couple months. ![]() The OpenIndiana boxes have uptimes measured in years. I've been using OpenIndiana v148 and v151 with raidz2 for a couple years now, alongside Ubuntu 10.04 and 12.04 boxes with mdadm/raid-6/xfs, for serving up NFS and iSCSI. Didn't see any advantages over Linux, personally, but I've never been interested in BSD. Tried FreeBSD briefly but worse hardware support than Linux yet without the benefits of ZFS having evolved natively on that platform (i.e. Happened with multiple OpenSolaris distros. And again it happened to two different machines that I'm familiar with - the machines had completely different hardware (one AMD and one Intel and a couple generations apart). devs mean well, but I have no idea what they think they're improving when they're causing near-wire-speed file transfers to slow down to ~30MB/s via updates. So to me it's either Solaris (real Solaris) or Linux. Then again, you could just never update your kernel, and you'd have a scenario more comparable to FreeBSD ![]() Otherwise you'll be grabbing the source from GIT and hoping things will be stable enough. In my opinion ZoL's downside is that they are sometimes slow to support new kernel versions, especially if you wait for an actual release of ZoL. I also moved to ZoL I found it to be the easiest to get good performance from (especially compared to OpenSolaris-based distros which had performed well for me in the past, but at some point were ruined via updates - also happened to a friend that runs NexentaStor after doing an update).
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