3PAR InForm® OS 2.3.1 Concepts Guide (320-200112 Rev B, February 2010)

6.5
Adding and Removing Hosts
InForm OS Version 2.3.1 3PAR InForm OS Concepts Guide
2 The InForm OS remembers all volumes exported to the host before it became inactive. It
will not unexport the volumes on the port with the missing host.
3 If and when the host reappears on the same port, the InForm OS will change the state of
the host to
active again. At that time, the host will have access to all previously exported
volumes as before.
6.6 Adding and Removing Hosts
The InForm administration tools allow you to create, modify, and remove Fibre Channel and
iSCSI host paths and their properties. When creating a new host, you can either create a host
with or without assigning WWNs or iSCSI Names. A virtual volume that is exported to a host is
exported to all the WWNs that make up the host. If you need to export virtual volumes to
particular host computer WWNs or iSCSI Names, you can create separate hosts on the storage
server and assign each WWN or iSCSI Name to its own host. Use the InForm CLI or the InForm
OS Management Console to create, modify, and remove hosts.
Hosts can be grouped into autonomic groups that can be managed as one host. If you have a
group of hosts that require the same administrative procedures, it is easier to group those
hosts into an autonomic group and mange them together. For instructions on creating,
modifying, and removing hosts, see the InForm OS CLI Administrator’s Manual and InForm OS
Management Console Online Help.
6.7 Host Personas
Host personas are a set of behaviors that permit hosts connected to FC or iSCSI ports on the
InServ Storage Server to deviate from the default host behavior. By assigning a persona to a
host, multiple host types that require distinct customized responses can share a single InServ
Storage Server port. For example, hosts running Windows, Linux, and AIX operating systems
can all connect to the same InServ port. This simplifies connecting hosts to the storage server
and reduces management costs related to complex host connections.
A host persona defines the custom responses for certain iSCSI commands and does not affect
any of the FC port settings. Host personas are tied to the host name and identified by the host
persona number. You can set the host persona number when the host is created or modify it
later. Use the InForm CLI commands or the InForm Management Console to display, create,
modify, and remove host personas. See the InForm OS CLI Administrator’s Manual or the
InForm OS Management Console Online Help for instructions on displaying, creating,
modifying, and removing host personas.