LSI MegaRAID 9260 on FreeBSD 8.2 amd64

Martin Nilsson martin at
Thu Jul 7 12:11:33 UTC 2011

On 2011-07-04 03.20, Sam Vaughan wrote:
> Hi,
> I want to use an LSI MegaRAID 9260 on FreeBSD 8.2 amd64 using mfi and I have two quick questions:
> LSI's MegaRaid SAS documentation [1] states that "Currently, the FreeBSD driver is supported only on 32-bit FreeBSD".  On the other hand the FreeBSD 8.2 hardware compatibility page [2] states that the mfi driver supports the MegaRaid 9260 in all three of the i386, ia64, amd64 ports.
> Is LSI's documentation simply out of date or is there some issue with the mfi driver on amd64?

There are two different diverged mfi drivers!
One that comes with FreeBSD and works well with the 9260 cards both 
under i386 and amd64.

Then we have the LSI driver, this one works under i386 and some versions 
also works under amd64 but the latest one on LSI:s web is i386 only. The 
current LSI driver supports the 9240 budget cards "skinny" and also the 
new fast 9265/9285 cards "Thunderbolt" these are not supported by the 
FreeBSD driver.


Martin Nilsson, CEO, Mullet Scandinavia AB, Malmö, SWEDEN
E-mail: martin at, Phone: +46-(0)708-59 99 91, Web:

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