Configuration: About Your Host 99
Managing Host Groups
A host group is a logical entity of two or more hosts that share access to
specific virtual disks on the storage array. You create host groups with MDSM.
All hosts in a host group must have the same host type (operating system). In
addition, all hosts in the host group must have special software, such as
clustering software, to manage virtual disk sharing and accessibility.
If a host is part of a cluster, every host in the cluster must be connected to the
storage array, and every host in the cluster must be added to the host group.

Creating a Host Group

To create host groups:
1
In the AMW, select the
Mappings
tab.
2
In the
Topo log y
pane, select the storage array or the
Default Group
.
3
Perform one of the following actions:
• Select
Mappings
Define
Host Group
.
• Right-click the storage array or the
Default Group
, and select
Define
Host Group
from the pop-up menu.
4
Type the name of the new host group in
Enter new host group name
.
5
Select the appropriate hosts in the
Select hosts to add
area.
6
Click
Add
.
NOTE: To remove hosts, select the hosts in the Hosts in group area, and click
Remove.
7
Click
OK
.
The host group is added to the storage array.
Adding a Host to a Host Group
You can add a host to an existing host group or a new host group using the
Define Host Wizard. For more information, see "Defining a Host" on
page97.
You can also move a host to a different host group. For more information, see
"Moving a Host to a Different Host Group" on page 100.
book.book Page 99 Thursday, December 9, 2010 3:20 PM