Hello grant, Thursday, June 1, 2006, 4:01:26 AM, you wrote:
gb> On Wed, May 31, 2006 at 03:28:12PM +0200, Roch Bourbonnais - Performance Engineering wrote: >> Hi Grant, this may provide some guidance for your setup; >> >> it's somewhat theoretical (take it for what it's worth) but >> it spells out some of the tradeoffs in the RAID-Z vs Mirror >> battle: >> >> >> http://blogs.sun.com/roller/page/roch?entry=when_to_and_not_to gb> thanks, that is very useful information. it pretty much rules out raid-z gb> for this workload with any reasonable configuration I can dream up gb> with only 12 disks available. it looks like mirroring is going to gb> provide higher write IOPS and increased redundancy, obviously at the gb> expense of the available space. Well, mirroring probably would actually give you less IO/s for writing. However you will get much less IO/s when reading many small files using multiple streams. That behaviour just ruled out raid-z here... -- Best regards, Robert mailto:[EMAIL PROTECTED] http://milek.blogspot.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
