Compaq ProLiant CL380 User Guide

H-8 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
Use of the Active/Active Performance Failover Mode is encouraged for
configurations dealing with applications that use multiple logical drives that
can be spread across the two controllers. Assigning the logical drives to
separate Host I/O Channels increases the overall resource availability on each
controller. When you assign a logical drive to a Host Port, you are actually
assigning it to a different CR3500 Controller (see Figure H-5). This helps
manually balance the disk I/O load across the two CR3500 Controllers.
Figure H-5. Assigning a Logical Drive to a Host Port
NOTE: Compaq recommends the use of Active/Active dual CR3500 Controller
configurations for ProLiant CL380 clusters. This is the default setting when two CR3500
Controllers are present.