Product Documentation

Run in Maintenance Mode

Oct 16, 2015

You may need to take a managed server offline for a number of reasons, such as a rolling upgrade of virtualization software, adding or testing connectivity to a new network, diagnosing an underlying hardware issue or adding connectivity to a new storage system. In XenCenter, you can take a server offline temporarily by placing it into Maintenance Mode. If the server is in a resource pool, when you place it into Maintenance Mode, all running VMs will be automatically migrated from it to another server in the same pool. If the server is the pool master, a new master will also be selected for the pool.

When Workload Balancing is enabled, the virtual machines running on that server will be automatically migrated to their optimal servers when available, based on Workload Balancing recommendations (performance data, your placement strategy, and performance thresholds).

While a server is Maintenance Mode, you cannot create or start any VMs on it.

To place a server in Maintenance Mode

  1. In the Resources pane, select the server and then do one of the following:
    • Right-click and click Enter Maintenance Mode on the shortcut menu.
    • On the Server menu, click Enter Maintenance Mode.
  2. Click Enter Maintenance Mode.
When all running VMs have been successfully migrated off the server, the server's status in the Resources pane is changed to .

To take a server out of Maintenance Mode

  1. In the Resources pane, select the server and then do one of the following:
    • Right-click and click Exit Maintenance Mode on the shortcut menu.
    • On the Server menu, click Exit Maintenance Mode.
  2. Click Exit Maintenance Mode.