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Nutanix - How to replace a disk

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Learn what actions to take before and after a Nutanix disk replacement.

 

Requirements

 

Instructions

Step 1: Access Prism Central and Prism Element

From the OVHcloud Control Panel, navigate to the Nutanix section via the Hosted Private Cloud menu and select your cluster.

In the General information panel, click Access Prism Central.

Nutanix general information

Click Launch Prism Element, which will open the single-cluster user interface.

From the Prism Element interface, select Menu and choose Hardware.

Nutanix dashboard hardware

 

Step 2: Put the host into maintenance mode

Click Table, and then Host.

Click your host and select Enter Maintenance Mode.

Nutanix hardware hosts enter maintenance mode

In the dialog box, check ☑️ Power-off non-migratable VMs to shut down any VMs that cannot migrate, and then click Enter Maintenance Mode.

Info

Wait until the spinning icon changes to show the host is in Maintenance Mode.

 

Step 3: Remove the disk

Select Disk, click the failing disk, and then Remove Disk.

Confirm the action in the pop-up window by clicking Remove Drive.

Nutanix hardware disks remove

Info

Prism will evacuate data from the disk and mark it as removed.

 

Step 4: Data center (DC) intervention

Once the disk is removed in Prism, an intervention will be created to replace the disk. The node will boot into Rescue Mode.

 

Step 5: Physical disk removal and replacement (by DC technician)

A DC technician will confirm that the host is still in Maintenance Mode and that the disk was removed in Prism. Once confirmed, the technician will physically remove the faulty disk and install a replacement.

 

Step 6: Add the new disk in Prism Central (customer)

Once the intervention has been completed, customers are required to add the new disk as well as exit maintenance mode.

In Prism Element, go to Hardware, then Table, and then Disk.

Click Add Disk to attach the new hardware.

Switch to the Host section, select your host, and click Exit Maintenance mode.

Nutanix hardware hosts exit maintenance mode

Info

The CVM will restart, VMs will migrate back automatically, and the node will rejoin the cluster.

 

Step 7: Final validation

Warning

NOTE: Complete this process within 2 hours of the disk replacement to ensure a successful cluster recovery.

Check that the following conditions exist in your cluster:

  • Cluster health: Normal
  • Data resiliency: OK
  • No maintenance or disk alerts remain.
  • All VMs and services are online.

 

Go further

Browse all the Nutanix guides.

Browse the rest of the OVHcloud US documentation for guides on our other products and services.

Learn more about Nutanix on OVHcloud on the OVHcloud US website.