HQT-4180: Correct procedure to replace failing power supply (PS) in VSP E590

Question

You need to replace a failing power supply (PS) in a VSP E590. What is the correct procedure?

A. Check if the status of the PS is blocked, and if yes, then replace it directly.
B. Use the Maintenance Utility for blocking the PS, then replace it.
C. Use the Maintenance Utility for blocking the controller, then replace the PS.
D. Use the MPC for blocking the PS, then replace it.

Answer

B. Use the Maintenance Utility for blocking the PS, then replace it.

Explanation

The correct procedure to replace a failing power supply (PS) in a VSP E590 is:

1. Check the status of the PS using the Maintenance Utility. If the PS is blocked, you can proceed to replace it. If the PS is not blocked, you must first use the Maintenance Utility to block the PS before you can replace it.
2. Disconnect the power cord from the failing PS.
3. Remove the screws that secure the PS to the chassis.
4. Carefully remove the PS from the chassis.
5. Install the new PS in the chassis.
6. Secure the new PS to the chassis with the screws.
7. Connect the power cord to the new PS.
8. Use the Maintenance Utility to unblock the PS.
9. Verify that the new PS is functioning properly.

Here are some additional details about each step:

• Checking the status of the PS: The Maintenance Utility can be used to check the status of all the components in the VSP E590. To check the status of the PS, open the Maintenance Utility and select the “System” tab. In the “Power Supply” section, you will see the status of all the PSs in the system. If the PS is blocked, it will be shown as “Blocked.” If the PS is not blocked, it will be shown as “Unblocked.”
• Disconnecting the power cord: Before you can remove the PS from the chassis, you must first disconnect the power cord. To do this, locate the power cord for the PS and disconnect it from the power supply.
• Removing the screws: Once the power cord has been disconnected, you can remove the screws that secure the PS to the chassis. There are two screws on each side of the PS. Use a Phillips head screwdriver to remove the screws.
• Removing the PS: Once the screws have been removed, you can carefully remove the PS from the chassis. Be careful not to damage the cables or the connectors.
• Installing the new PS: To install the new PS, simply reverse the steps for removing the old PS. First, connect the power cord to the new PS. Then, secure the new PS to the chassis with the screws.
• Unblocking the PS: Once the new PS has been installed, you must use the Maintenance Utility to unblock it. To do this, open the Maintenance Utility and select the “System” tab. In the “Power Supply” section, you will see the status of all the PSs in the system. Click on the “Unblock” button next to the new PS.
• Verifying that the new PS is functioning properly: Once the new PS has been unblocked, you must verify that it is functioning properly. To do this, run a system health check. You can do this by opening the Maintenance Utility and selecting the “System Health” tab. In the “System Health” section, click on the “Run System Health Check” button. The system health check will scan the system for any errors. If the new PS is functioning properly, there will be no errors reported.

Reference

• Hitachi Vantara Qualified Professional – VSP Midrange Installation HQT-4180 Exam | Hitachi Vantara
• VSP E590 VSP E790 Hardware Reference – Hitachi Vantara Knowledge
• Installing your VSP E590 and VSP E790 storage system – Hitachi Vantara Knowledge

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