SAN Design: March 29, 2001 3:18 pm
2.4DUAL SWITCH HIGH AVAILABILITY CONFIGUR ATION - REDUN DANT FABR IC
FIGURE 4. Two Fabrics -- Simplest Redundant Fabric Configuration
H
SW
D
H - host
SW - switch
D - storage device
H
SW
•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
BROCADE Technical Note | Page: 9 of 31 |