IBM manual Summary of Valid 2104 Model DU3 Configurations

Summary of Valid 2104 Model DU3 Configurations

A summary of valid configurations and SCSI ID assignments is shown in the following table:

Table 2. Summary of Valid Configurations

SCSI Bus				Number of	SCSI IDs of	Maximum	SCSI IDs of Disk	SCSI ID of	Adapters Supported
Mode				Connected	Adapters	Number of	Drive Modules	Enclosure
				Adapters		Disk Drive		Services
						Modules		Processor
Single Bus				1	7	14	0,1,2,3,4,5,6,	15	All adapters listed on
							8,9,10,11,12,13,14		page 38.
Single Bus				2	5, 6	12	0,1,2,3,4,8,9,	15	See Notes 1 and 2.
							10,11,12,13,14
Dual Bus
v	SCSI	Bus	1	1	7	7	0,1,2,3,4,5,6	15	All adapters	listed
v							(See Note 3.)		on page 38.
	SCSI	Bus	2	1	7	7	8,9,10,11,12,13,14	15	All adapters	listed
							(See Note 4.)		on page 38.

Notes:

1. In HACMP configurations: PCI Dual-Channel Ultra2 SCSI Adapter (type 4-R), or PCI Dual-Channel Ultra3 SCSI Adapter (type 4-Y) in separate using systems

2. In non-HACMP configurations : PCI Dual-Channel Ultra2 SCSI Adapter (type 4-R), PCI Dual-Channel Ultra3 SCSI Adapter (type 4-Y), or Ultra2 SCSI Integrated Port , either in the same, or in separate using systems, but not sharing access to the disk drive modules.

3. Left hand half of the 2104 Model DU3, viewed from the front

4. Right hand half of the 2104 Model DU3, viewed from the front

Appendix A. Operating with RISC Systems 39