High Availability - IBM SAN768B-2 Installation, Service And User Manual

High availability

The following features contribute to the SAN768B-2's high-availability design:
v Redundant, hot-swappable FRUs, including blades, power supplies, blowers,
v Enhanced data integrity on all data paths
v Fabric Shortest Path First (FSPF) rerouting around failed links
v Integration with Simple Network Management Protocol (SNMP) managers
v Automatic control processor failover
v Nondisruptive "hot" software code loads and activation
v Easy configuration, save, and restore
The high-availability software architecture of the SAN768B-2 provides a common
framework for all applications that reside on the system, allowing global and local
status 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 CP failover activity, closes and
flushes streams as needed, provides flow control and message buffering, and
supports a centralized active and standby state.
Table 2. Blades available for the SAN768B-2 (continued)
Description Feature Code
64-port 8-Gbps port FC3864
blade
FCIP extension blade FC3890
WWN cards
Name Function
FC8-64 A 64-port port blade
supporting 2, 4, and
8 Gbps port speeds
with mSFPs. This
port blade is
compatible with the
SAN768B-2,
SAN384B-2,
SAN768B, and
SAN384B
FX8-24 The FX8-24 blade
enables FCIP
functionality over
existing IP
infrastructure. It has
12 FC ports, ten 1
GbE ports, and two
10 GbE ports
available. This
application blade is
compatible with the
SAN768B-2,
SAN384B-2,
SAN768B, and
SAN384B
Chapter 1. Introduction
7