High Availability; Reliability - HP A7533A - Brocade 4Gb SAN Switch Base Hardware Reference Manual

Description
B-Series MP Router Blade (Fibre
Channel router blade)

High availability

The following features contribute to the DC04 SAN Director's high-availability design:
• Redundant, hot-swappable CP8 and CR4S-8 blades and FRUs
• Enhanced data integrity on all data paths
• Fabric Shortest Path First (FSPF) re-routing around failed links
• Integration with Simple Network Management Protocol (SNMP) managers
• Automatic CP and core blade failover
• Non-disruptive "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 DC04 SAN Director 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 CP blade, 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.

Reliability

The DC04 SAN Director uses the following error detection and correction mechanisms to ensure
reliability of data:
• Data protected by the Error Detection and Correction mechanism, which checks for encoder errors
and fault isolation (EDFI), such as cyclic redundancy checking (CRC), parity checking, checksum,
and illegal address checking
• Power-on self-test (POST)
• Dual CP Blades that enable hot, non-disruptive fast firmware upgrades
• Each CP Blade containing one serial port and two Ethernet ports, for management and for service.
• Standby CP Blade to monitor diagnostics to ensure it is operational, in case a failover is required.
• Offline CP Blade diagnostics and remote diagnostics to simplify troubleshooting
• Bus monitoring and control of blades and other FRUs
Name
FR4-18i
HP StorageWorks DC and DC04 SAN Backbone Director Switches
Function
The FR4-18i blade integrates 16
physical FC SFP ports supporting FCR
Services and two physical Gigabit
Ethernet (GbE) SFP ports supporting
Fibre Channel Over IP (FCIP). The two
physical GbE ports can support up to
16 virtual E_ports. This Director blade
is compatible with the 4/256 SAN
Director, the DC SAN Director, and
the DC04 SAN Director.
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