It is possible to increase the reliability of the SCSI bus
with minimum performance degradation by disabling a few of
the advanced features of the SCSI device driver.
Make an archive copy of the file
Look for the following lines:
int Sdsk_no_sg = 0;
int Sdsk_no_tag = 0;
int Sdsk_set_RCD = 0; (OpenServer 5 Only)
Change the 0 in each line to a 1.
Save the file, re-link the kernel, and re-boot.
These three lines control Scatter/Gather Enable, Tagged
Queuing, and target read cache respectively.
Disabling them will slow the system slightly while
If your system remains stable after a week or so of activity
you may try enabling these features one-by-one until
you fail. Then you'll know for sure which advanced feature
causes instability on your system.