HP ProLiant 1500 User Guide: Online Storage Controller Recovery Option - Page 67
Mismatched Controller Pairs
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5-6 Configuration Errors to Avoid Mismatched Controller Pairs OSCRO allows you to form multiple controller pairs in a single server. Each controller pair must conform to the configuration guidelines for single-channel or dual-channel controller pairs. Incorrect configurations can result from connecting the cables incorrectly, as shown in Figure 5-3. Connecting the secondary (idle) interface of the wrong ProLiant Storage System/F or /U, for example, causes an incorrect configuration that the Online Storage Controller Recovery Utility can detect only if you run a Verify. If you do not run a Verify, you will be able to merge the controllers into a controller pair but the configuration will not function if either of the active controllers fails. ProLiant ProLiant Storage 1 System 2 /F or /U 1 Storage 1 System D/F or /U L I2 2 A Active VStandby Active I N Standby Device Driver Device Driver Figure 5-3. Invalid Configuration -- Mismatched Controller Pairs - Logical Diagram