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Database Failovers in Exchange
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Database failovers are sometimes associated with maintenance windows (patching, restarting mailbox servers, etc.) A database will failover any time the connection to the active database is severed. Database failover testing will be part of regular operational maintenance of Exchange
- Clients currently connected will need to reconnected for OWA this represents a simple re-sign in, for cached client connections this should be automatically negotiated and worse case scenario is a client restart of the mail application
- Some Mac Mail clients will disassociate thier local cached copy of the mailbox and require a mailbox rebuild or worst case mailbox remapping to resolve.
- Root cause of this is unknown at this point, there have been 3 instances recognized across the university during failover testing.
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