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.
Figure 83 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
PortPort
Port
Port
Port
•
When configuring multipathing for reliability, make sure to configure a redundant connection for the con-
trollers of the
ETERNUS AF. Configure paths to connect to different controllers (CM#0 and CM#1). Combina-
tions 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 inter-
face 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 DX/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 con-
nections are not supported.
For more details on Storage Cluster, refer to "Storage Cluster" (page 105).
2. Connection Configuration
SAN Connection
131
FUJITSU Storage ETERNUS AF250 S2, ETERNUS AF250 All-Flash Arrays
Design Guide (Basic)
Copyright 2019 FUJITSU LIMITED
P3AG-1822-09ENZ0
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