HP 3PAR RedHat and Oracle Linux Implementation Guide

RHEL uses the generic host persona of 1 (UARepLun,SESLun) for HP 3PAR OS 3.1.2, 3.1.1, or

earlier. Beginning with 3PAR OS 3.1.3, HP recommends using host persona 2 (UARepLUN, SESLun,

ALUA).

1. To create host definitions, issue the createhost [options] <hostname> [<WWN>...]

command. For example:

# createhost -persona 1 redhathost 1122334455667788 1122334455667799

NOTE: Changing an existing host persona from 1 to 2 is an offline process that requires a host

reboot for the changes to take effect. The multipath configuration file /etc/multipath.conf

must be changed to ALUA type for host persona 2 SCSI attributes to take effect. For the detailed

procedure, see “Modifying HP 3PAR Devices on the Host” (page 115).

NOTE: To enable HP 3PAR Host Explorer functionality, HP recommends host persona 1 for hosts

running RHEL 4 update 6 and later, RHEL 5.0 and later, or RHEL 6.1 and later.

Starting with the HP 3PAR OS 3.1.3 release, host persona 2 can also be used to support the HP

3PAR Host Explorer functionality on RHEL 5.8 and later or RHEL 6.1 and later.

Host persona 1 or 2 enables two functional features:

• Host_Explorer, which requires the SESLun element of host persona 1 or 2

• UARepLun, which notifies the host of newly exported VLUNs and triggers a LUN discovery

request on the host, making the VLUN automatically available.

Currently, none of the supported RHEL versions use the UARepLun, so you must manually scan the

newly exported VLUNs.

Host persona 6 is automatically assigned following a rolling upgrade from HP 3PAR OS 2.2.x. If

one or both of these features are to be used, the host persona value can be changed from 6 to 1

or 2 after the upgrade.

For host persona support in

Table 3 Host Persona Support

CommentSupported PersonaHP 3PAR OS

Host Explorer Support on Persona 16HP 3PAR OS 2.3.1

1HP 3PAR OS 3.1.1, 3.1.2

ALUA Support on Persona 22 (recommended)HP 3PAR OS 3.1.3

HP Peer Motion support for single VV

migration requires persona 2

Minimum OS requirement RHEL 5.8 and

later or RHEL 6.1 and later.

NOTE: See the HP 3PAR Command Line Interface Reference or the HP 3PAR Management Console

Help for complete details on using the controlport, createhost, and showhost commands.

These documents are available on the HP SC website:

HP Support Center

Configuring the HP 3PAR StoreServ Storage Running HP 3PAR OS 2.2.x

This section describes how to configure an HP 3PAR StoreServ Storage running HP 3PAR OS 2.2.x.

12 Configuring the HP 3PAR StoreServ Storage for Fibre Channel