I finally got a Dell Poweredge 860 with SAS 5/IR running by backporting the mpt driver.
Those were the necessary commits from Linus' tree : a9b2937a1eab2939d0eed3830ead88664ed7445d f2ea8671a8376e09cf759aa8cb3de8b8d3bced9e c7c82987b4844f555d309ccbd42abe95d46822ff 816aa907b909177bdf6e6e6b0d00c5e5a6e2be8c (slightly modified to get rid of 2.6.16's mutexes) ** Attachment added: "backported patch" http://librarian.launchpad.net/5702451/linux-2.6.git-816aa907b909177bdf6e6e6b0d00c5e5a6e2be8c-backported.patch -- fusion mpt sas driver does not find a RAID1 disk during installation(Sun Galaxy X4200 and X4100, Dell SASR5/i) https://launchpad.net/bugs/37452 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
