yeah, i'm aware of the performance aspects. I use these servers as mostly hd video servers for my house...they don't need to perform amazingly. I originally went with the setup on the old server because of everything i had read about performance with wide stripes...in all honesty it performed amazingly well, much more than i truly need...i plan to have 2 raidz2 stripes of 10 drives in this server (new one).
At most it will be serving 4-5 HD streams (mostly 720p mkv files, with some 1080p as well) The older server can EASILY max out 2 Gb/s links..i imagine the new server will be able to do this as well...i think a scrub of the old server takes 4-5 hours.....i'm not sure what this equates to in MB/s but its WAY more than i ever really need. This is what led me to use wider stripes in the new server, and i'm honestly considering redoing the old server as well, if i switched to 2 wider stripes instead of 3 i'd gain another TB or two....for my use i don't think that would be a horrible thing. On Fri, May 21, 2010 at 10:03 PM, Brandon High <bh...@freaks.com> wrote: > On Fri, May 21, 2010 at 5:54 PM, Thomas Burgess <wonsl...@gmail.com> > wrote: > > shouldn't the newer server have LESS load? > > Please forgive my ubernoobness. > > Depends on what it's doing! > > Load average is really how many process are waiting to run, so it's > not always a useful metric. If there are processes waiting on disk, > you can have high load with almost no cpu use. Check the iowait with > iostat or top. > > You've got a pretty wide stripe, which isn't going to give the best > performance, especially for random write workloads. Your old 3 vdev > config will have better random write performance. > > Check to see what's using the CPU with top or prstat. prstat gives > better info for threads, imo. > > -B > > -- > Brandon High : bh...@freaks.com >
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