Figure 108 Multipath Connection (When A San Connection Is Used - Basic Connection Configuration); Figure 109 Multipath Connection (When A San Connection Is Used - Switch Connection) - Fujitsu ETERNUS DX S5 Series Design Manual

5. Connection Configuration
SAN Connection
■
Multipath Configuration
A multipath configuration connects the ETERNUS DX to a server via multiple paths (multipath). System reliability
is improved due to the path redundancy.
If a path fails, access can continue by using the path failover function that switches access from the failed path
to another path.
Figure 108 Multipath Connection (When a SAN Connection Is Used – Basic Connection Configuration)
Server
HBA HBA
Port Port
CA#0
CM#0
Figure 109 Multipath Connection (When a SAN Connection Is Used – Switch Connection)
Server
HBA HBA
Switch
Port Port
CA
CM#0
When the ETERNUS DX is accessed from both of the servers, performance can be secured by connecting to the
ETERNUS DX using one host interface port on each of the four host interfaces.
Server
HBA HBA
Port Port
CA#0
CM#1
ETERNUS DX
Server Server
HBA HBA HBA HBA
Switch
Port Port
CA
CM#1
ETERNUS DX
214 Design Guide