I am looking at the specs and manual for the IBM System x3650. According to the specs a ServeRAID-8k-l hardware RAID comes standard, but there's an option to upgrade to ServeRAID-8k. If I understand this correctly, this system will always have some h/w RAID.
I have found that h/w RAID firmware often assumes that all disks attached should be part of a RAID configuration managed by h/w, and of the same make of h/w at that. This won't always be the case, either because one is using s/w RAID and/or because HDDs are being brought in from other systems with data on them.
My question is whether this limitation applies to the x3650 or whether the on-board SAS ports can 'pass-through,' allowing the OS to 'see' an attached physical disk directly.
(I'm quite cautious because I once bought an Adaptec RAID whose specs and manual claimed it had this capacity, only to find out it didn't.)
I'm also wondering of the same on-board controller, notwithstanding the usual cautions on using disks that big, whether it is able to talk to 2TB disks (I've seen some that don't).