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Dell Storage Manager 2020 R1 Administrator's Guide

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Automatically Failing Over

Enabling Automatic Failover on a Live Volume allows the secondary Live Volume to automatically activate in the event of a failure. The following steps occur during an automatic failover.

CalloutObjectCalloutObject
1Primary Storage Center4Primary Live Volume
2Tiebreaker5Secondary Live Volume
3Secondary Storage Center6Servers
  1. The primary Storage Center fails.
    Figure 1. Step One
    Auto Failover step 1: Live Volume Storage Center failure
  2. The secondary Storage Center cannot communicate with the primary Storage Center.
  3. The secondary Storage Center communicates with the tiebreaker and receives permission to activate the secondary Live Volume.
  4. The secondary Storage Center activates the secondary Live Volume.
    Figure 2. Step Four
    Automatic Failover step 4: Secondary Live Volume is activated
NOTE:When the primary Storage Center recovers, Storage Center prevents the Live Volume from coming online.

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