Hello Bob, Friday, August 29, 2008, 7:25:14 PM, you wrote:
BF> On Fri, 29 Aug 2008, Kyle McDonald wrote: >>> >> What would one look for to decide what vdev to place each LUN? >> >> All mine have the same Current Load Balance value: round robin. BF> That is a good question and I will have to remind myself of the BF> answer. The "round robin" is good because that means that there are BF> two working paths to the device. There are two "Access State:" lines Assuming that you have only two paths and each one connected to different controller you will be using only one path for each LUN as 25x0 is an asymmetric disk array. Sometimes people tend to create several luns and assign some of them to one controller and some of them to another one. Now if you do striping or raid-10 between these luns you will end-up using both controllers which will improve performance for some workloads. The drawback is that in case one controller fails you may expect performance degradation. -- Best regards, Robert Milkowski mailto:[EMAIL PROTECTED] http://milek.blogspot.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
