Failover managers, Virtual managers – HP LeftHand P4000 SAN Solutions User Manual
Page 120
Failover Managers
The Failover Manager is a specialized version of the LeftHand OS software designed to operate
as a manager and provide automated failover capability. It runs as a virtual appliance in either
a VMware vSphere or Microsoft Hyper-V Server environment, and must be installed on network
hardware other than the storage systems in the SAN. The Failover Manager participates in the
management group as a manager; however, it performs quorum operations only, not data movement
operations. It is especially useful in a Multi-Site SAN configuration to manage quorum for the
multi-site configuration without requiring additional storage systems to act as managers in the sites.
shows the Failover Manager installed, configured, and appearing in the
CMC.
Figure 60 Failover Manager in the available systems pool
Virtual Managers
A virtual manager is added to a management group, as shown in
, but is not
started on a storage system until a failure in the system causes a loss of quorum. Unlike the Failover
Manager, which is always running, the virtual manager must be started manually on a storage
system after quorum is lost. It is designed to be used in two-system or two-site system configurations
which are at risk for a loss of quorum.
120 Working with managers and quorum