Hello!
I have a new server with an Adaptec 2100S hardware raid controller and _only_ scsi hard disks. I'm trying to install debian linux 3.0r2 but the hard disk are not recognized by the default kernel. Does anyone have a clue about this situation ?? any information will be very usefull.
Info on this seems to be fairly hard to track down. With a bit of Googling, I turned up this much:
Apparently the 2100s requires a dpt_i2o.o module. This is (or was; I can't find an actual link) available from Adaptec, and it *may* be the same module that is now part of recent 2.4.x kernels (associated with "Adaptec I2O RAID support").
In any case, this link the closest I can to working instructions ...
http://www.togaware.com/linux/survivor/Load_RAID.html
... and it does not describe a complete process -- though it does discuss compiling the module for kernel 2.2.19 and concerting the Debian bootdisks to use that kernel.
I suspect you will need eventually to compile a kernel with initrd support so it can load the needed modules before trying to mount the root filesystem on the RAID array. Or you will need to boot/init from a different location -- were I facing this problem, I'd add a small (10-20 GB or so, small by today's standards) IDE drive and use it as boot media and the root filesystem ... mounting the RAID array at a point appropriate to whatever use calls for a RAID array (/home ? some database directory?).
For more information, try Googling "linux Adaptec 2100S debian". Especially if you read German (I don't), you'll find a lot.
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