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EMC Connectrix B Series v6.2 ED-DCX-4S-B Hardware Reference Manual
Hardware Overview
High availability
The following features contribute to the ED-DCX-4S-B
high-availability design:
◆ Redundant, hot-swappable blades and FRUs.
◆ Enhanced data integrity on all data paths.
◆ Fabric Shortest Path First (FSPF) rerouting around failed links.
◆ Integration with Simple Network Management Protocol (SNMP)
managers.
◆ Automatic control processor failover.
◆ Nondisruptive “hot” software code loads and activation.
◆ Easy configuration, save, and restore.
◆ Hot-swappable World Wide Name (WWN) cards.
The high-availability software architecture of the ED-DCX-4S-B
provides a common framework for all applications that reside on the
system, allowing global and local states to be maintained through
any component failure. High-availability elements consist of the High
Availability Manager, the heartbeat, the fault/health framework, the
replicated database, initialization, and software upgrade.
The High Availability Manager controls access to the standby control
processor, facilitates software upgrades, prevents extraneous
switchover activity, closes and flushes streams, provides flow control
and message buffering, and supports a centralized active and
standby state.
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