HP StorageWorks Auto Path VA Software User Manual

hp surestore auto path

virtual array

for Windows 2000

installation an d user’s guide



Editio n MARCH 2001

Order No. T10 11-96002

Printed in U.S.A.

Notice

Trademark Information

kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitne ss for a par ticu la r p urp ose. Hew lett -P ack ard sh al l n ot be liable for errors cont ained herein or for incident al or consequ ent ial d am ages i n co nne cti on with t he f urn is hing, performance, or use of this material. This do cumen t cont ai ns propr iet ary i nf orma ti on, whi ch is protected by copyright. No part of this document may be photoc opied, reproduced, or translated into another language without the prior w ritten consent of Hewlett-Packard. The information contained in thi s document is subject to change without notice.

Safety Instructions

Denotes:

WARNING A hazard that can cause personal

injury

Caution

A hazard that can cause hardware or softw a r e damage

Microsoft, Windows NT, and Windows 2000 are registred trademar ks of Microsoft Corporation

Java and all Java-based marks are trademarks or registered trademarks of Sun Microsystems, Inc. in the United States and other countries.

HP, HP-UX are registered trademark s of Hewlett-Packard Company. Command View, Secure Manager, Business Copy, Auto Path, Smart Plug-Ins are trademarks of Hewlett-Packard Company

Format Conventions

Denotes

Note Significant concepts or operating

instructions

this font Text to be typed verbatim: all

commands, path names, file names,

and directory names this font Text displayed on the screen <this font> Variables used in commands

Table of Contents

1 Product Description

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Dynamic Load Balancing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Automatic Switching to Alternate Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

User Interfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Product Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Auto Path VA Upgrade Licenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

HP Modular Storage Software Pro ducts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

2 Auto Path VA Installation

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

HP Netservers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Other Servers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Installing Auto Path VA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Uninstalling Auto Path VA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Table of Contents (

continued

)

3 Using Auto Path VA

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Auto Path VA GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Auto Path VA Devices Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Selecting a Server and Array. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Adding a Server. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Deleting a Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Refreshing the Window. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Accessing Auto Path VA Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Auto Path VA Device Setti ngs Window. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Setting the Load Balancing Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Setting the Preferred Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Auto Path VA Adapters Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Command-Line User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

autopath adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

autopath devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

autopath help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

autopath paths device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

autopath set device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

4 Troubleshooting

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Contacting HP Customer Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Recovering After a Path Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Troubleshooting Auto Path VA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Event Viewer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Windows Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Windows Registry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Disk Administrator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Web Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 6

1 PRODUCT DESCRIPTION

Overview

Congratulat ions on your purchase of the HP SureStore Auto P ath Virt ual Array (Auto Path VA) product. This s oftware product provides automatic input/output (I/O) pa th failover and load balancing for servers configured with multiple host bus adap ters connected to HP SureStore V irtual Arrays.

Typically, system disk I/O is sent directly to the Windows disk driver. Auto Path VA is a filter driver that fits betwee n the Windo ws disk driver and the host bus adapter driver. Auto Path VA, which is transpare nt to all applications, provides these features:

• Enhanced data availability.

• Dynamic load balancing over multiple paths.

• Automatic path failover and recovery to an alternate path.

• A graphical user int erfa ce and a command-line user interface.

Product Descripti o n

Dynamic Load Balancing

Auto Path VA performs dyna mic load ba lanci ng of data fl ow thro ugh mult iple pa ths. It det ects m ult iple paths to each device (or LUN) and allocates the data load among the paths for optimum performance.

This multipa th load balancing prevents any path from becoming ove rloaded and helps prevent the congestio n that oc curs when many I/O ope ratio ns are dire cted to common devi ces along the same pat h. Load balancing is pe rformed using a policy selected by the administrator.

If a preferred path is spe cified for a device, the entire I/O for that particular de vice flows through the preferred path. No load balancing is done by Auto P ath VA.

Automatic Switching to Alternate Path

If a data path fails, Auto Path VA autom atically switches to an alternate path, dropping the failed path out of the I/O rotation without any loss of data. The switchover is completely transparent to applications, so normal opera tion continues without downtime.

All path changes are logged in the Windows Event Viewer log, allowing administrators to investigate and repair fail ed paths. After a failed path is repaired, Auto Path VA automatically begins us ing the path with the set load balancing policy. If the failed path was set as a preferred path, you must use the

Device Setti ngs window to res et the device’s preferre d path back to the repaired path’s number.

User Interfaces

Auto Path VA provides two user interfaces: a graphical user interface (GUI) and a command-line user interface (CLUI). These interfaces enable a system administrator to view path information and select either load balancing polici es or pr eferred paths. The GUI consis ts of two components: server and client. The server runs on the host connected to the HP SureStore Virtual Array. The client can run on either the host that the server is on or from a remote hos t connected through the network.

The CLUI can be used only on hosts that are both connected to an HP SureStore Vi rtual Array and have the Auto Path VA driver installed. You can execute CLUI commands only from the directory where the installed Auto Path VA program files res ide.

6 Overview

Product Contents

The contents of the Auto P ath VA product include:

• HP StoreStore Auto Path Virtual Array Installation and User’s Guide

• Software CD

• 1 Host Li cense-to-Use Cer tificate

Installation and User’ s Guide

Software CD

License-to-Use Certificate

Product Cont ents 7

Auto Path VA Upgrade Licenses

A one host license-to-use is required for each installation of Auto Path VA. Upgrade licenses provide additional host usage for the Auto Path VA product. The se upgrade licenses can increase the host usage up to 25 hosts, depe nding on the license purchased (see Table 1 on page 9). The content s of the upgrade license include:

– Softwa r e Li cense Cer ti ficate – Stora ge envelope

Software License Certificate

Note Keep all Softwa re License Ce rtificat es you receiv e for the HP Su reStore Aut o Path V i rtual

Array product in a safe plac e.

The HP SureStore Auto Path Virtual Array product is licensed to you according to the standard licensing terms defined on the HP Software License Agreement you received with this product.

HP Modular Storage Software Products

Several optiona l software products are available to enha nce the operation of the HP SureStore Virtual Array. These optional software products are listed in Table 1 on page 9. For the most up-to-date product information, access the HP Web site (see section ”Web Support” on page 36 for instructions).

8 Auto Path VA Upgrade Licenses

Table 1 HP Modular Storage Software Products

Software Product HP Sales Rep. HP Reseller

Command View SDM

Storage device management enables array confi guration and management and provides value-added software products.

Software Package and 1 Host License-t o-Use (LTU) T1001A T1020A

Enterprise Management Smart Plug-Ins

Enables Command View SDM in HP Openview NNM for HP-UX, Windows 2000, and Windows NT 4.0. It also enables HP Command View SDM for HP Top Tools and CA-Unicenter

TNG.

Software Package and 1 Host LTU T1002A T1021A

Business Copy Virtual Array

Enables online data replication or LUN copying within the array for testing and backup, and requires the same phys ical space to be available in the array as the LUN(s) being cop ied.

Software Package and 50 GB LTU

500 GB Upgrade LTU

1 TB Upgrade LTU

Secure Manager Virtual Array

Enab le s LU N s to be lo ck ed in t o a se c u r e shared env ir o n ment.

Software Package and 50 GB LTU

500 GB Upgrade LTU

1 TB Upgrade LTU

Auto Path Virtual Array for Windows 2000

Enables I/O path fail-over in Windows 2000 environments with the benefit of I/O load balancing in both failed and non-failed states.

Softwa r e Pac k ag e an d 1 H os t LTU

1 Host Upgra de LTU

5 Host Upgra de LTU 10 Host Upgra de LTU 25 Host Upgra de LTU

HP Modular Storage Software Products 9

T1007A T1008A T1009A

T1003A T1004A T1005A

T1011A T1012A T1013A T1014A T1015A

T1026A T1027A T1028A

T1022A T1023A T1024A

T1030A T1031A T1032A T1033A T1034A

Warranty

This software package comes with a 90 day media defect warranty. If you have any problems with the quality of the CD or the supporting documentation, you can return it for exc hange through any HP sales office or authorized HP reseller.

Technical Support

Technical support is provided for this prod uct through an HP Support Contract, purchased at the time you purchased this product. See the HP Support Contract for information on technical support.

For a list of the most current support phone numbe rs for the HP SureStore Auto Path Virtual Array product, go to the following HP Web site:

www.hp.com/go/apva

10 Warranty

2 AUTO PATH VA INSTALLATION

Overview

The HP SureStore Auto Pat h Virtual Array (Auto Path VA) graphical user interface (GUI) consists of two components: server and client. You install the se rver on the host connect ed to the HP SureStore Virtual Array. You can install the client on either the host that the server is on or on a remote host connected through the network.

Each installat ion of Auto Path VA requires a one host lic ense-t o-us e (LTU). For example, installi ng the GUI server and client on the same host requires a one host LTU. Installing the GUI server and the GUI

client on different hosts requires a two host LTU. See section ”Auto Path VA Upgrade Licenses” on page 8 for information on incre asing the host usage up to 25 hosts.

Note HP SureStore Auto Path V irt ual Array (Aut o Path VA) supports on ly HP SureSt ore V irtual

Arrays. In environments containing both HP SureStore Virtual Arrays and HP SureStore XPs, use the HP SureStore Auto Path XP softwar e produc t.

Auto Path VA Installation

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