Our mutual customer is in the process of qualifying the IBM Ultrastar 36LP Hard Drive on the Intel L440GXC Server Motherboard. It is their first SCSI U160 drive qualification. System configuration: Intel L440GXC motherboard w/ onboard Adaptec AIC-7896 SCSI Controller w/BIOS v2.20S1B1. OS Redhat Linux 6.1 Pisces - 36GB - 80pin w/ S60B Bottom line.. During Linux installation from CD, when Red Hat Linux attempts to load the Adaptec driver (aic7xxx driver), the Adaptec chip hangs during the Parallel Protocol Request. During the Parallel Protocol Request, we assert REQ for the REQ/ACK Offset of 3FH (63), however ACK is never asserted by the initiator. Why is the driver sending an Ultra 3 message? Do you have an update Adaptec aix7xxxx driver? Our previous generation drive, Ultrastar 18ES (SCSI Ultra 2) works fine w/ Linux 6.1, because we reject the Parallel Protocol Request.
I could provide you a SCSI bus trace of issue. Send request to bbetanco.com BTW- you can call me Bill!
assigned to dledford
Thank you for your help! The latest aic7xxx driver solved the issue!
Closing at customer's request.