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Multipath Configuration
A multipath configuration connects the ETERNUS AF 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 88
Multipath Connection (When a SAN Connection Is Used – Basic Connection Configuration)
Server
HBA
HBA
Server
HBA
HBA
ETERNUS AF
CM#0
Port
Port
CA#0
CA#0
CM#1
Port
Port
Figure 89
Multipath Connection (When a SAN Connection Is Used – Switch Connection)
Server
HBA
HBA
Server
HBA
HBA
Server
HBA
HBA
Switch
Switch
ETERNUS AF
CM#0
Port
CA
Port
Port
CA
Port
CM#1
When the ETERNUS AF is accessed from both of the servers, performance can be secured by connecting to the
ETERNUS AF using one host interface port on each of the four host interfaces.
3. Connection Configuration
SAN Connection
148
Design Guide
Summary of Contents for ETERNUS AF S3 Series
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