Figure 83 Multipath Connection (When A San Connection Is Used - For Enhanced Performance) - Fujitsu ETERNUS AF250 Design Manual

2. Connection Configuration
SAN Connection
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
Port Port Port
CA#0 CA#1
CM#0
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
Server
HBA HBA
Port Port Port Port Port
CA#0 CA#1
CM#1
ETERNUS AF
"Storage Cluster" (page
FUJITSU Storage ETERNUS AF250 S2, ETERNUS AF250 All-Flash Arrays Design Guide (Basic)
Copyright 2019 FUJITSU LIMITED
105).
131
P3AG-1822-09ENZ0