On Wed, 2007-05-09 at 21:09 +0200, Louwtjie Burger wrote: > > > LUN are configured as RAID5 accross 15 disks. > > Won't such a large amount of spindles have a negative impact on > performance (in a single RAID-5 setup) ... single I/O from system > generates lots of backend I/O's ?
yes, single io which hard to generate full stripe write on such large number of disks and then eventually depends on NVRAM in your EMC box to do the work. this is why small number of disks in a raid5 is recommended by EMC also. of course, again depends on your application workload pattern. Ming _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
