IBM DU3 manual For Hacmp configurations in standby or mutual takeover mode

One Adapter in Each of Two Using Systems Connected to One 2104 Model DU3

1 1

Maximum of 12

disk drive modules

2104 Subsystem

2

Using System

2

Using System

Figure 32. One Adapter in Each of Two Using Systems Connected to One 2104 Model DU3 (Single-Bus Mode)

1	SCSI interface card
2	For HACMP configurations in standby or mutual takeover mode:
	v PCI Dual-Channel Ultra2 SCSI Adapter (type 4-R, feature 6205)
	The two adapters must not be in the same using system.
	v PCI Dual-Channel Ultra3 SCSI Adapter (type 4-Y, feature 6203)
	The two adapters must not be in the same using system.
	Note:

For non-HACMP configurations:

vPCI Dual-Channel Ultra2 SCSI Adapter (type 4-R, feature 6205)

vPCI Dual-Channel Ultra3 SCSI Adapter (type 4-Y, feature 6203)

vUltra2 SCSI Integrated Port

Note: In non-HACMP configurations, connections can be made to two separate using systems, or to the same using system. Connection can be to an Ultra2 SCSI integrated port or to an Ultra2 SCSI connector on the SCSI adapters listed. Access to the disks in the 2104 cannot be shared.

Attention: This 2104 configuration is not supported on the Linux operating system.

Attention:

vThe SCSI address of the adapter that is connected to the 2104 must be different from the addresses of the installed disk drive modules. When a second adapter is connected to a 2104, the SCSI address of that adapter must be different from the address of the first adapter and the addresses of the installed disk drive modules.

vIn each 2104, slots 6 and 7 (SCSI addresses 5 and 6) must contain dummy disk drive modules.

vEach 2104 can contain no more than 12 disk drive modules.

462104 Model DU3 Installation Guide