Я открыл страницу 31, figure 2-1 p5-570 logic data flow и нашёл на этой схеме только два dual SCSI Ultra 320
И дальше:
2.7 Internal storage
Two Ultra320 SCSI controllers under EADS-X chips that are integrated into the system planar
are used to drive the internal disk drives. The six internal drives plug into the disk drive
backplane, which has two separate SCSI buses and controllers with three disk drives per bus.
Each of these controllers can be dynamically assigned to partitions if required.
Значится, память меня подвела и SCSI-контроллеров два :blush:
