Ransomware attackers specifically target and attempt to destroy backup systems to increase the probability of payment. Hardening your system is critical. Please ensure you have reviewed your platform security using the Security Hardening Checklist
Cohesity

COHESITY Documentation

Explore our documentation to get started, discover products & new features, access troubleshooting guides, register sources, platforms support.

Products
Data Security Alliance
Visit Cohesity.com
Demos
Support
Blogs
Developers
Partner Portals
Cohesity Community
© 2026 Cohesity, Inc. All Rights Reserved.
Terms of Use|
Privacy Policy|
Legal|
  1. Home
  2. NetBackup™ Flex Scale Administrator's Guide
  3. Appendix A. Maintenance procedures for HPE servers
  4. Replacement procedure for power supply
NetBackup™ Flex Scale Administrator's Guide

Replacement procedure for power supply

This topic describes the process for replacing a power supply unit in a NetBackup Flex Scale node. Each node contains two power supply units. If one of the PSUs fails, the node can function. If both the units fail, the node becomes unhealthy.

Identifying a power supply failure (performed by the CHS team)

The following section describes how to identify a power supply failure from NetBackup Flex Scale:

A node can tolerate failure of a single power supply unit. However, you are required to replace the failed power supply unit.

If both the power supply units fail, the node is shown as unhealthy because the node is down. In the NetBackup Flex Scale infrastructure management UI, navigate to Monitor > Infrastructure > Nodes to view the health of the nodes. If the NetBackup Flex Scale infrastructure management UI is running on the node where the failure occurs, the UI fails over to another cluster node.

The following section describes how to identify a power supply failure from third-party tools:

The HPE Integrated Lights-Out (iLO) remote console shows a failure. Navigate to Power & Thermal > Power and note the status of the malfunctioning power supply unit.

Collecting HPE Active Health System (AHS) logs (performed by Veritas Support)

Before you contact the hardware vendor for replacing the failed component, collect AHS logs. To collect the AHS logs, in the NetBackup Flex Scale infrastructure management UI, navigate to Settings > Diagnostics > Basic > Appliance.

Replacing the power supply (performed by the HPE vendor)

Contact the hardware vendor to replace the hardware component. An HPE representative replaces the power supply.

Completing the post-replacement tasks (performed by Veritas TSE)

After the hardware vendor notifies you that the hardware component is replaced, verify that the issue is resolved.

Reinsert the power cables back into the power supply and the node will be healthy again. Verify the node status in the NetBackup Flex Scale infrastructure management UI:

Verify that all the services are up and running:

To view the power supply status in the NetBackup Flex Scale management infrastructure UI, navigate to Monitor > Infrastructure > Hardware > Power Supply.

Verify the power supply status in the iLO remote console.

Feedback

Was this page helpful?
Previous

Replacement procedure for a chassis fan

Next

Replacement procedure for a single OS disk

Feedback

Was this page helpful?