Please do not top post....
LSI MegaRAID SATA 300-8x is PCI-X and LSI MegaRAID SATA 150-4 is not. But both work on 5V. The PCI connector pins define how the card draws power from the Mother Board. Pin arrangements are defined for +5 volts, +3.3 volts, or +5 and +3.3 volts. The +5 volt connectors and boards are Keyed, so that 3.3 volt cards may not be inserted. The +3.3 volt boards are also Keyed but in a different location on the connector, so that 5volt cards may not be inserted. However the difference between the two card types resides with the signaling protocol they use, and not with the power rails. I am not a guru on this. But I think PCI-X can (or is) backward compatible with PCI. But I am not sure on this. /Per-Olov On Wednesday 18 May 2005 02.51, Travis Gillitzer wrote: > Please be sure to double check before buying. I thought the same > thing when I ordred the LSI MegaRAID SATA 300-8x. It wasn't keyed for > a standard 5V PCI slot, and as such would not work. > > I went ahead and upgraded motherboards to a PCI-X capable board, > however it was a costly upgrade that I wasn't prepared to do when I > originally bought the card. > > On 5/17/05, Alexander Hall <[EMAIL PROTECTED]> wrote: > > Alexander Hall wrote: > > > Per-Olov Sjvholm wrote: > > >> LSI 150-4 works like a charm (OpenBSD 3.6 + driver cleanup patches > > >> from CVS)... I have many of them. Both in 32 and 64 bit slots. Now I > > >> use it on some OpenBSD 3.7 installations as well. > > >> What can I say... I wont buy any adaptec cards ;-) > > >> > > >> /Per-Olov > > > > > > So they work well in 32-bit PCI slots as well? I thought (for no other > > > than visual reasons) that they required a 64-bit slot. We were thinking > > > about byuing one for our ISP1100 (somewhat old, but stable), which has > > > no 64-bit PCI slot. Do you know if there is anything special to think > > > about or will it work with just about any 32-bit PCI slot? > > > > > > Can anyone else comment (pros/cons) on the ISP1100 and the LSI MegaRAID > > > 150-4? > > > > ** Rogier Krieger replied: > > LSI Logic mentions on its website (that is, its knowledge base; I > > don't have a direct link) that these cards also work in 32 bit slots. > > It does so for me, without a glitch. I think I also mentioned this in > > my first post. I'll try a 64 bit slot (for performance comparison) > > once the appropriate hardware arrives. > > > > ** Steve Shockley replied: > > I've rarely had problems using a 64-bit card in a 32-bit slot, as long > > as the card would physically fit without shorting the exposed card edge. > > The one time I did have a problem, I think it was a problem between > > the card, the motherboard and OpenBSD; the card worked fine in another > > 32-bit PCI system under some kind of Linux, as well as Windows. > > > > ** Per-Olov Sjvholm replied: > > I think you must have the following to put the 150-4 card in a 32 > > bit slot: > > * The motherboard must support PCI 1.1 (it probably does if it's not > > to old). > > * You also have to have a notch at the rear end of the pci slot. If > > you do not have it you can't put the card in the slot (I think all > > motherboards not older than a couple of years have this). > > > > http://lsionline2.lsil.com/esupport/esupportlsi/consumer/esupport.asp?id= > >bf88d26d-7205-4bcd-a542-d2a9b4af2b4e&resource=&number=0&isExternal=0&nShow > >Facts=&nShowCause=&nShowChange=&nShowAddInfo=&activepage=statement.asp&bFo > >rceMatch=False&strCurrentSymptom=&searchtype=normal&searchclass=QuickSearc > >h&bnewsession=false&selecttype=match > > > > **************** > > > > Thanks a lot for the pleasant replies! I'm very excited about getting > > some real RAID into the box. Now I only hope it's within our limited > > budget (including new disks and all). I'm trying to convince myself that > > software RAID isn't worth the hassle (root-on-raid issues, non-GENERIC > > etc). > > > > Sincerely, > > Alexande
