Figure 90
Multipath Connection (When a SAN Connection Is Used for Enhanced Performance)
Server
HBA
HBA
HBA
Server
HBA
ETERNUS AF
Port
CM#0
Port
Port
CA#0
CA#1
CA#0
CA#1
CM#1
Port
Port
Port
Port
Port
Caution
•
When configuring multipathing for reliability, make sure to configure a redundant connection for
the controllers of the ETERNUS AF. Configure paths to connect to different controllers (CM#0 and
CM#1). Combinations of host interface numbers (CA#0 and CA#1) in controllers do not need to be
taken into consideration.
•
Paths from a single server should be separately connected to a different host interface in case of
host interface failure.
■
Cluster Configuration
When servers are duplicated and connected using a cluster configuration to share a single ETERNUS AF among
multiple servers, cluster control software is required.
■
Storage Cluster Configuration
An ETERNUS AF is duplicated and connected in a cluster configuration by using Storage Cluster.
The connection interface is FC or iSCSI. In addition, only the switch connection topology is supported. Direct
connections are not supported.
For more details on Storage Cluster, refer to
.
3. Connection Configuration
SAN Connection
149
Design Guide
Summary of Contents for ETERNUS AF S3 Series
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