Redundancy Failed I/O Request Error - HP StorageWorks MSA500 G2 User Manual

Troubleshooting 99
2. Wait 10 seconds.
3. Reinstall the controller, and be sure that it seats fully in the chassis.
If this action does not solve the problem, wait until downtime is available and do
the following:
1. Power down the storage system (on page 28).
2. Remove both controllers.
3. Reinstall both controllers, and be sure that they seat fully in the chassis.
If this action does not solve the problem, contact HP support.

51 Redundancy Failed I/O Request Error

Type: Error
Description: While either attempting to enter redundant mode or already
operating in redundant mode, one of the controllers encountered an error while
sending I/O on the communication channel between the two controllers.
Redundancy is disabled at this time.
Action:
If the storage system is currently involved in host I/O:
1. Remove the standby controller.
2. Wait 10 seconds.
3. Reinstall the controller, and be sure that it seats fully in the chassis.
If this action does not solve the problem, wait until downtime is available and do
the following:
1. Power down the storage system (on page 28).
2. Remove both controllers.
3. Reinstall both controllers, and be sure that they seat fully in the chassis.
If this action does not solve the problem, contact HP support.