What is the general failure mode of these partially-supported Adaptec
SCSI controllers? We have a Dell PowerEdge 2200 system with an
on-board AIC-7880 controller which got ordered by mistake because the
word "Linux" got left out of the PO request for this system even though
the purpose for ordering it was specifically to run Linux.
Blecch, I thought. Now we're stuck trying to convince purchasing to
return a system with a turkey SCSI controller.
Just for the hell of it, I tried installing Linux, and darned if it
didn't detect the SCSI inteface and install the driver for it. Looking
at the /var/log/messages file, I see messages about an aic7xxx driver,
and scsi0 is identified as an "AHA274x/284x/294x" interface. Everything
*seems* to be OK so far (no strange hangs, pauses, or error messages).
The information on these controllers at the Red Hat Web site says:
The following SCSI adapters are partially supported:
Adaptec AHA-294x(W/UW/D/WD), AHA-394x(W), AHA-398x(W); Adaptec
AIC-777x, AIC-785x, AIC-787x, AIC-788x, AHA-2920 (uses Future
Unfortunately, Adaptec has not actively supported the
development of a driver for the AHA-2940 SCSI adapter and
AIC7xxx SCSI chipset. Specifically, Adaptec continues to
release new BIOSes without making the specifications available
to the authors of the Linux driver. Consequently, some AHA-2940
adapters work well with Linux, because they have compatible
BIOSes, while other AHA-2940s have incompatible BIOSes and do
not work well with Linux. Until the authors of the Linux
drivers are able to make the driver work with the incompatible
AHA-2940 BIOSes, we recommend using a different SCSI adapter
with Red Hat Linux.
This seems to imply that it is pretty definitive if one works or not.
Does this mean we got the good luck of having an AIC-7880 with a
supported BIOS to cancel out the bad luck of getting the 7880 in the
Is there some sort of test suite I can run to verify that all is well?
David Barts N5JRN | UW Civil Engineering, Box 352700 | Seattle, WA 98195-2700
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