Compaq ProLiant CL380 User Guide

H-6 Compaq ProLiant CL380 User Guide
Compaq Confidential – Need to Know Required
Writer: Marcello Frau Project: Compaq ProLiant CL380 User Guide Comments:
Part Number: 118128-003 File Name: n-apph SCSI ID Configurations.doc Last Saved On: 8/28/00 4:55 PM
You will notice that in this configuration that although there are two instances
of SCSI IDs 2 and 3, one is active and the other is passive (see Figure H-3).
This prevents a SCSI ID conflict. It is not possible to configure all four Host
I/O Channels to be active.
Server
Node 1
CR3500
Host
Side
Bus
Disk
Side
Bus
Host
Side
Bus
Disk
Side
Bus
Internal Shared Disks
SCSI
Adapter
Host Port 0
(Channel 0)
Server
Node 2
SCSI
Adapter
Drive Bus
(Channel 2)
Host Port 1
(Channel 1)
CR3500
Host Port 0
(Channel 0)
Drive Bus
(Channel 2)
Host Port 1
(Channel 1)
Repeater to
4214 External
Storage
Disk Disk Disk Disk Disk Disk
6
2A 2P3P 3A
7
A = Active
P = Passive
Figure H-3. Active/Active Failover Mode