Figure 35 Associating Host Groups, Ca Port Groups, And Lun Groups - Fujitsu ETERNUS DX60 S4 Design Manual

Hybrid storage systems
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1.
Function
Improving Host Connectivity
The host affinity can be set by associating "Host Groups", "CA Port Groups", and "LUN Groups".

Figure 35 Associating Host Groups, CA Port Groups, and LUN Groups

Host group 1
Server A
HBA
HBA
Server B
HBA
HBA
Server C
HBA
HBA
Server D
HBA
HBA
Host group 2
The host affinity can also be set by directly specifying the host and the CA port without creating host groups and
CA port groups.
Host Group
A host group is a group of hosts that have the same host interface type and that access the same LUN group.
HBAs in multiple hosts can be configured in a single host group.
CA Port Group
A CA port group is a group of the same CA type ports that are connected to a specific host group. A CA port group
is configured with ports that access the same LUN group, such as ports that are used for multipath connection to
the server or for connecting to the cluster configuring server. A single CA port group can be connected to multi-
ple host groups.
LUN Group
A LUN group is a group of LUNs that can be recognized by the host and the LUN group can be accessed from the
same host group and CA port groups.
A LUN group is mapping information for LUNs and volumes.
Host access must be prevented when changing or deleting already set host affinity settings. When adding a
new LUN to the host affinity settings, it is not necessary to stop host access.
When servers are duplicated and connected using a cluster configuration to share a single ETERNUS DX
among multiple servers, cluster control software is required.
FUJITSU Storage ETERNUS DX60 S4, ETERNUS DX60 S3 Hybrid Storage Systems Design Guide (Basic)
Switch
Port
Port
Switch
CA port group 2
Switch
Port
Port
Switch
56
Copyright 2019 FUJITSU LIMITED
ETERNUS DX
LUN group 1
Vol#0
Vol#1
Vol#2
CA port group 1
Vol#10
Vol#11
LUN group 2
P3AM-8992-14ENZ0

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