Compaq ProLiant 1000 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

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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
Storage
System
/F or /U
1
ProLiant
Storage
System
/F or /U
2
1
2
1
2
Device
Drive
r
Standby
Active
Device
Drive
r
Standby
Active
I N V A L I D
Figure 5-3.
Invalid Configuration -- Mismatched Controller Pairs - Logical Diagram