Network Router User Manual

SAN Design: March 29, 2001 3:18 pm

53-0001575-01 BROCADE Technical Note Page: 9 of 31

2.4 DUAL SWITCH HIGH AVAILABILITY CONFIGURATION - REDUNDANT FABRIC

FIGURE 4. Two Fabrics -- Simplest Redundant Fabric Configuration

• Can use multiple hosts sharing single disk device, with redundant

paths in two fabrics

• Redundant switches, not combined into fabric

• Dual HBAs in hosts, host level software provides for failover to

alternate HBA when failure is noted in one HBA

• Dual ported storage allows for either host to access the same data

• With 8 port switches can support 4 hosts and two disk devices,

larger configurations possible with 16 port switches

H - host

SW - switch

D - storage device