Storage Multi-Pathing choices in HP-UX Serviceguard environments, August 2009

– Migrating from HP StorageWorks SecurePath for Active-Active Disk Arrays to Native Multipathing in HP-UX

11i v3 (http://docs.hp.com/en/AA-RWF2A-TE/AA-RWF2A-TE.pdf)

 Third party mass storage devices

(http://www.hp.com/products1/serverconnectivity/mass_storage_devices.html)

 Identifies the storage devices validated for use with HP-UX. Specifies which of these is not supported

with LVM PVlinks, and which require third party multi-pathing software, such as EMC PowerPath for

Serviceguard support.

 SAN Design Guide

(http://spock.corp.hp.com/pages/san_design.aspx)

Configuration reference for HP storage. The HP-UX SAN configuration rules table identifies which

HP devices support multiple controllers and which support SP, DMP, and PVlinks. The HP-UX

multipathing coexistence support table shows which devices support which multi-pathing solutions,

and which device/multi-pathing combinations can coexist on the same SAN.

 HP StorageWorks SecurePath 3.0F Service Pack 2 for HP-UX 11i v1.0 and 11i v2.0, installation and

reference guide

(http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00248499/c00248499.pdf)

Other links to this document: Storage Software and Multi-path Software.

 A comprehensive user guide for both SecurePath for Active-Passive disk arrays and SecurePath for

Active-Active disk arrays.

 Device Support for Veritas Products on HP-UX

(http://docs.hp.com/en/5992-0563/5992-0563.pdf)

This document describes the various devices that support the Veritas products from Hewlett-Packard

and Symantec on HP-UX systems. Support for storage devices varies according to the product.

 VERITAS Volume Manager 4.1 Administrator’s Guide (HP-UX 11i v2)

(http://docs.hp.com/en/5991-1838/5991-1838.pdf)

Chapter 3 describes administering DMP and also provides an overview of its operation. Chapter 2

has a section on Third Party Driver Coexistence which overviews interoperability in very general

terms, and also has various references to configuring "foreign" devices when use of other multi-

pathing software is desired. A section in chapter 10 describes policies which react to path failures

from 1 or more nodes in a cluster. Chapter 12 describes a DMP tunable kernel parameter.

 Veritas Dynamic Multi-pathing,

Improving data availability and I/O performance through intelligent management of storage access

paths.

(http://eval.veritas.com/mktginfo/products/White_Papers/Storage_Server_Management/sf_dmp_wp.pdf) An

alternate link: Veritas Storage Foundation White Papers contains a good overview of how DMP works

as well as some in-depth discussion of interoperability with other multi-pathing solutions, especially

PowerPath. The subsection PowerPath pseudo mode does not apply to HP-UX. An updated version

of the white paper with DMP 5.0 information can be found at:

http://eval.symantec.com/mktginfo/enterprise/white_papers/ent-whitepaper_vsf_5.0_dynamic_multi-

pathing_05-2007.en-us.pdf

 VERITAS Volume Manager 4.1 Hardware Notes (HP-UX 11i v2)

(http://docs.hp.com/en/5991-1839/5991-1839.pdf)

Identifies supported HP-UX server models and storage devices. Describes conditions and limitations

for various devices. Describes coexistence with PowerPath. Describes support procedures for new

disk arrays. Provides an overview of the vxdmpadm command.

 Veritas 4.1 Installation Guide (HP-UX 11i v3)