HP-UX GUID Manager v1.0 Administrator Guide

1 Introduction
The HP-UX GUID (globally unique identifier) Manager (GUIDMgr) is a client-server based product
that allocates and manages unique World-Wide Names (WWNs) for N_Port ID Virtualization
(NPIV) Host Bus Adapters (HBAs), so you do not have to perform these tasks manually. This chapter
describes the GUIDMgr product, including the following topics:
• About GUIDMgr
• Using the GUIDMgr documentation
• GUIDMgr database
NOTE: HP recommends that you install and rely on the GUID Manager to automatically generate
WWNs and manage them.
1.1 About GUIDMgr
Administrators are responsible for tracking WWNs and guaranteeing their uniqueness across the
Storage Area Network (SAN). The GUIDMgr provides a mechanism to manage unique WWNs,
so that the same name is not re-allocated until freed, to avoid potential data corruption when
Logical Storage is presented to multiple vPars by mistake. The GUIDMgr helps accomplish this
task.
GUIDMgr is integrated with the following products to support NPIV:
• HP Integrity Virtual Machines V4.3 (January 2012 patch release)
• HP-UX Virtual Partitions v6.0
• Hp-UX vPars and Integrity VM V6.1
In addition, GUIDMgr is integrated with HP Integrity Virtual Server Manager to support managing
the database.
For information about vPars and Integrity VM commands, see “Integrating GUIDMgr” (page 21).
the HP Integrity Virtual Machines V4.3: Release Notes and the HP-UX vPars and Integrity VM V6.1
Administrator Guide at http://www.hp.com/go/hpux-hpvm-docs.
For information about HP Integrity Virtual Server Manager, see the HP Integrity Virtual Server
Manager User Guide at the http://www.hp.com/go/insightdynamics-manuals website.
The GUIDMgr can have multiple servers, each serving different WWN ranges, and manage up
to 100 ranges, where each range can contain up to 32K entries. The GUIDMgr also includes a
daemon backed by a database that supports the management of unique names.
The unique WWNs provided for NPIV are 16 hexadecimal digits. The GUIDMgr provides an
Organizationally Unique Identifier (OUI) of 50014c2, the 7 leading hexadecimal digits, which
are the first 7 digits of the WWN. The remaining 9 hexadecimal digits are used to create a pool
of Port WWNs and Node WWNs, where:
• The Port Pool values are 50014c2000000000 to 50014c27ffffffff.
• The Node Pool values are 50014c2800000000 to 50014c2fffffffff.
Each GUIDMgr instance manages a subset of the range.
NOTE: If you use multiple GUID servers, HP recommends that each GUID server manages a
unique range of WWNs (that is, non-overlapping ranges), which allows for the ease of merging
two GUID servers. If the supported ranges are disjointed, then the merge will likely be clean.
1.1 About GUIDMgr 5