Alexander, > - Ultra320 bus does not work physically, too many errors. > - Ultra160 bus works relable, no errors. Ultra320 was generally problematic. I worked on two different hardware platforms that both gave up on the original plan of using 320 and went back to an Ultra160 ASIC between prototype and GA. Mainly due to signaling problems. Even internal controller to disk backplane cabling was a problem. So make sure your cabling and termination is in good working order and rated for 320. > Unfortunately Adaptec does not work with CDB-16 too :( I don't have any SPI hardware anymore. But my suggestion would be to look for an LSI 53C1030-based card. It's a different ASIC than the 1010 you tried (has more in common with the first gen SAS controllers). It's the final generation of SPI products and would stand the best chance of working. -- Martin K. Petersen Oracle Linux Engineering