Pre upgrade tasks Complete these tasks to ensure an uninterrupted upgrade for VxBlock Central and create a back-up of information that may not persist. Child TopicsVerify system requirementsSystem, hardware, and license requirements require that minimums are met to support the VMs. Upgrade verification tasksThe verification tasks help to ensure an uninterrupted VxBlock Central upgrade. Supported upgrade pathsReview the supported paths to upgrade VxBlock Central. Download VxBlock Central upgrade files To upgrade VxBlock Central, download the required files to upgrade the Core VM, MSM VM, and the MSP VM to the latest software version. Collect the custom display namesIn a single MSM VM deployment, custom display names are not retained after an upgrade. Take a snapshot of VMsBefore upgrading, create a snapshot of a Core or MSM VM. If you encounter problems during the upgrade process, you can use the snapshot to revert the VM. Take a snapshot of VMs in the cluster Before upgrading, create a snapshot of each VM in the cluster. If you encounter problems during the upgrade process, you can use the snapshot to revert the VM. Configure the VMs to use the NTP serverEnsure that each VM is configured to use an NTP server. If redeploying an MSM VM, specify an NTP server IP address when configuring the server. Parent topic VxBlock Central upgrade overviewThe VxBlock Central upgrade can be performed for the Core VM, MSM VM, and MSP VM in single site or multisite clusters.