Le 15 févr. 08 à 03:34, Bob Friesenhahn a écrit : > On Thu, 14 Feb 2008, Tim wrote: >> >> If you're going for best single file write performance, why are you >> doing >> mirrors of the LUNs? Perhaps I'm misunderstanding why you went >> from one >> giant raid-0 to what is essentially a raid-10. > > That decision was made because I also need data reliability. > > As mentioned before, the write rate peaked at 200MB/second using > RAID-0 across 12 disks exported as one big LUN.
What was the interlace on the LUN ? > Other firmware-based > methods I tried typically offered about 170MB/second. Even a four > disk firmware-managed RAID-5 with ZFS on top offered about > 165MB/second. Given that I would like to achieve 300MB/second, a few > tens of MB don't make much difference. It may be that I bought the > wrong product, but perhaps there is a configuration change which will > help make up some of the difference without sacrificing data > reliability. > If this is 165MB application rate consider that ZFS sends that much to each side of the mirror. Your data channel rate was 330MB/sec. -r > Bob > ====================================== > Bob Friesenhahn > [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ > GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ > > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
