Hp 3par quorum witness – HP 3PAR Operating System Software User Manual
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HP 3PAR Peer Persistence failover can occur when either the array or the site becomes unavailable,
as shown in
and
). To ensure that applications can
continue running without any interruption, a quorum witness is required to enable the automatic
failover.
Figure 43 HP 3PAR Quorum Witness
The HP 3PAR Quorum Witness does not preclude the performance of manual peer-persistence
switchovers. Users may also want to execute a manual peer-persistence switchover in the following
circumstances:
•
When vMotion is performed to migrate a VM from a source site to a target site.
•
When a VM dies and the vSphere cluster brings up that VM on the remote site.
In these circumstances, a switchover ensures that the migrated VM can continue I/O operations
to the HP 3PAR StoreServ array that is local to the VM. See
.
HP 3PAR Peer Persistence
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