Pre-upgrade considerations for Enhanced Link Mode

Consider the following before starting the Enhanced Link Mode (ELM) upgrade.

  • Upgrading a VxBlock System in a VMware vSphere 6.0 or 6.5 ELM configuration requires a corresponding upgrade for any other VxBlock System joined to the same VMware vSphere SSO domain.
  • Create a backup of all PSCs configured in the ELM. Create simultaneous backups of all PSCs and VMware vCenter Servers participating in the ELM ring topology.
  • Inventory and document all PSCs and VMware vCenter Servers participating in the same SSO domain before upgrade.
  • Configure NTP for all PSCs.
  • Verify the current status of the PSC by logging into the web interface for each PSC https://<FQDN_PSC>:5480. Use the username root and the Dell EMC standard password unless otherwise noted.
    1. Navigate to the Summary screen. Verify the following:
      • The build version is correct.
      • The Overall Health status is Good.
      • The SSO Domain Status is RUNNING.
    2. If the status does not meet the conditions, do not proceed with the upgrade until the PCSs meet these conditions.
    3. Enable SSH access to the PSC.
      NOTE: Make sure the partner server is 0 changes behind. If any of the PSCs are not synchronized with each other, do not proceed with the upgrade until all PSCs display Partner is 0 changes behind. See Verifying PSC and PSC Partner Status in the Administration Guide for your Converged System.