Oh, I am so jealous. That should yield about 3.07TB in RAID5!
I'd be tempted to try RAID6 with that many drives though, or at least reserving one as a hot spare. You'd still get about 2.79TB.
I take it that this is work-related and on someone-elses dollar. Can you tell us which sata card you're using?
Here's my bonnie++ test using 10GB logical volumes.
Code:
Version 1.03 ------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
genixia-ext2-4k 2049M 34531 82 74377 16 17483 5 23804 60 57312 10 436.0 1
genixia-ext3-4k 2049M 31148 75 68173 20 21928 6 28116 68 54798 10 364.1 1
genixia-jfs-4k 2049M 33759 82 70475 16 19181 5 23839 49 50013 9 466.9 1
genixia-reiser-4k 2049M 34656 78 67953 23 21457 6 24017 60 52841 11 417.0 0
genixia-xfs-4k 2049M 35217 81 72467 22 19437 6 24457 56 56003 10 431.5 1
genixia-ext3-4k-noatime 2049M 32251 75 60789 18 22492 7 28932 61 56562 11 388.6 0
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files:max:min /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
genixia-ext2-4k 16 3815 99 +++++ +++ +++++ +++ 3880 96 +++++ +++ 11239 99
genixia-ext3-4k 16 2809 98 +++++ +++ +++++ +++ 2799 97 +++++ +++ 6702 95
genixia-jfs-4k 16 1163 0 +++++ +++ 546 0 511 0 +++++ +++ 342 0
genixia-reiser-4k 16 23224 99 +++++ +++ 25527 100 22164 100 +++++ +++ 22071 98
genixia-xfs-4k 16 1353 14 +++++ +++ 1381 11 1397 16 +++++ +++ 579 6
genixia-ext3-4k-noatime 16 2791 99 +++++ +++ +++++ +++ 2816 99 +++++ +++ 6145 96