Recently installed a new backup server with Bacula and connected to our SAN based on Brocade switches and HDS (DF700XS unit type, microprogram rev. 0781/A-X). We've never tested this HDS unit, but I was interested, so pasting results here. The test was done on ubuntu-9.04 running x86 kernel with "ProLiant DL380 G4" hardware and Emulex FC cards (multipathd with default configuration). HDS LUN defined as following: 2Tb, raid5 (6D+1P), stripe size 64k, 400Gb SATA disks.

ubuntu# bonnie -s 5000 -d /mnt/backup1 -u bacula
Version 1.03c       ------Sequential Output------ --Sequential Input- --Random-
                    -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP
ubuntu        5000M 33760  75 50988  18 32570   8 36339  92 139228  16 386.2   1
                    ------Sequential Create------ --------Random Create--------
                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
                 16  7236  45 +++++ +++  4874  28  5797  37 +++++ +++  3957  23
ubuntu,5000M,33760,75,50988,18,32570,8,36339,92,139228,16,386.2,1,16,7236,45,+++++,+++,4874,28,5797,37,+++++,+++,3957,23