Those numbers are pretty good, right? Who needs onboard XOR anyway :) On Fri, Jan 9, 2009 at 03:30, Danny Carroll <[email protected]> wrote:
> Koen Smits wrote: > > My guess is it probably has to do with the way ZFS does cache flushes: > > > http://www.solarisinternals.com/wiki/index.php/ZFS_Evil_Tuning_Guide#Cache_Flushes > > It might be worth it to disable the forced flushing and test again, if > > you feel like it. > > I've just done this and the results are on the same page: > > http://www.dannysplace.net/quickweb/filesystem%20tests.htm > The Excel version is here: > > http://www.dannysplace.net/quickweb/filesystem%20tests.xls > > It is a major improvement but I do not know 100% for sure if the disks > are protected by the write cache/battery backup when in Passthrough mode. > > When creating a passthrough disk the "Volume Cache Mode" can be set to > "Write Back" or "Write Through". This makes me feel as though the cache > is being used and that when the cache is used, so is the BBU. But I > cannot be 100% sure. I will send an email to Areca support to ask. > > -D > _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hardware To unsubscribe, send any mail to "[email protected]"
