Can FreeBSD handle redundant SAS controllers?

[Andy Young]

I'm having trouble finding information about this on the web. I have a SAS
backplane with redundant expanders designed so you can use redundant SAS
controllers. Seems obvious to me that the drivers need to support two cards
pointing to the same drives. Does this work in FreeBSD? Does it matter
which HBAs I buy?

Thanks!
Andy

[Ivan Voras]

Post by Andy Young
I'm having trouble finding information about this on the web. I have a SAS
backplane with redundant expanders designed so you can use redundant SAS
controllers. Seems obvious to me that the drivers need to support two cards
pointing to the same drives. Does this work in FreeBSD? Does it matter
which HBAs I buy?

The closest thing to what you want is gmultipath:

http://www.freebsd.org/cgi/man.cgi?gmultipath

[Andy Young]

Thanks Ivan. I will check it out.

Andy

Post by Ivan Voras

Post by Andy Young
I'm having trouble finding information about this on the web. I have a

SAS

Post by Andy Young
backplane with redundant expanders designed so you can use redundant SAS
controllers. Seems obvious to me that the drivers need to support two

cards

Post by Andy Young
pointing to the same drives. Does this work in FreeBSD? Does it matter
which HBAs I buy?

http://www.freebsd.org/cgi/man.cgi?gmultipath

--
Andrew Young
Mosaic Storage Systems, Inc
http://www.mosaicarchive.com/

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