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Second Controller Option 5-15
Compaq Confidential – Need to Know Required
Writer: Bob Young Project: RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Comments:
Part Number: EK-SMCPO-UG. C01 File Name: f-ch5 Second Controller Option.doc Last Saved On: 12/4/00 1:48 PM
Verifying the Controller Operating Parameters
For optimal dual-controller performance and load balancing, the host ports
should be configured as listed below. Verify these parameters from the
Controller Properties page:
■ Host I/O channel 0 for Controller 1 (top) to Active
■ Host I/O channel 1 for Controller 1 to Passive
■ Channel 0 Target ID for Controller 1 to 0
■ Channel 1 Target ID for Controller 2 to 1
NOTE: It is allowable to configure the host I/O and target IDs as follows:
Controller 1 (top) may be set to
“ Passive” while host I/O channel 1 for Controller 1 is set
to “ Active” . As long as each host channel value and channel target ID value is unique, the
system is correctly configured for Active/Active mode.
1. Select the Environment tab from the Controller Properties window.
2. Ensure the cabinet and UPS settings are set to normal.
3. Select the Cache tab from the Controller Properties window. The
SIMMs parameters must be identical between controllers.
4. Select OK. The system is now ready for dual-controller operation.
Configuration of additional RAIDsets may now be performed as
desired.