HP StoreOnce 4430 HP StoreOnce Backup System Concepts and Configuration Guidel - Page 56

Scenario 4, dual fabric with dual switches, not advised

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Figure 30 Complex configuration with ports of different VTLs being presented to different fabrics, Fabric 2 fails Scenario 4, dual fabric with dual switches, not advised The FC configuration is the same as scenario 3, but the VTLs are presented to a single port, which means they are tied to a single switch within a single fabric. This configuration is not advised because it compromises the B6200 autonomic failover facility. FC configuration • Dual fabrics • Multiple switches within each fabric • Zoning by WWPN • Each zone to include a host and the required targets on the HP B6200 Backup system • Equivalent ports from each node are connected to the same fabric, but are directed to different switches • Each port is connected to only one switch within one fabric B6200 VTL configuration • Library configuration is all drives presented entirely to a single port, either Port 1 or Port 2. • Loss of a port, switch or fabric means that all access is lost to the VTLs that are dedicated to that port, switch or fabric 56 Configuring FC to support failover in a StoreOnce B6200 Backup system environment

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Figure 30 Complex configuration with ports of different VTLs being presented to different fabrics,
Fabric 2 fails
Scenario 4, dual fabric with dual switches, not advised
The FC configuration is the same as scenario 3, but the VTLs are presented to a single port, which
means they are tied to a single switch within a single fabric. This configuration is not advised
because it compromises the B6200 autonomic failover facility.
FC configuration
•
Dual fabrics
•
Multiple switches within each fabric
•
Zoning by WWPN
•
Each zone to include a host and the required targets on the HP B6200 Backup system
•
Equivalent ports from each node are connected to the same fabric, but are directed to different
switches
•
Each port is connected to only one switch within one fabric
B6200 VTL configuration
•
Library configuration is all drives presented entirely to a single port, either Port 1 or Port 2.
•
Loss of a port, switch or fabric means that all access is lost to the VTLs that are dedicated to
that port, switch or fabric
56
Configuring FC to support failover in a StoreOnce B6200 Backup system environment