Hp StorageWorks Auto Path VA Software Manuale Utente

hp surestore auto pathvirtual arrayfor Windows NTinstallation and user’s guideVersion 1.03Edition August 2001Printed in U.S.A.

10 HP Auto Path XP: User’s Guide (Windows NT/2000)Product ContentsThe contents of the Auto Path VA product include:• HP StoreStore Auto Path Virtual A

Auto Path features 11Auto Path VA Upgrade LicensesA one host license-to-use is required for each installation of Auto Path VA. Upgrade licenses provid

12 HP Auto Path XP: User’s Guide (Windows NT/2000)Table 1 HP Modular Storage Software ProductsSoftware Product HP Sales Rep. HP ResellerCommand View

Auto Path features 13WarrantyThis software package comes with a 90 day media defect warranty. If you have any problems with the quality of the CD or t

14 HP Auto Path XP: User’s Guide (Windows NT/2000)

15INSTALLATIONAuto Path is installed using an automated installation program. After Auto Path is installed, and the server software component is runni

16 HP Auto Path XP: User’s Guide (Windows NT/2000)Installing Auto Path softwareTo install Auto Path, you must have administrator privileges on the hos

Installation 17Uninstalling Auto PathTo uninstall Auto Path, use the Windows Control Panel.To uninstall Auto Path:1. Open the Windows Control Panel.2.

18 HP Auto Path XP: User’s Guide (Windows NT/2000)

19OPERATIONAuto Path operations can be accessed from both a graphical user interface (GUI) and command line interface (CLI). Both the GUI and the CLI

2Notice© Hewlett-Packard Company, 2001. All rights reserved. Hewlett-Packard Company makes no warranty of any kind with regard to this material, i

20 HP Auto Path XP: User’s Guide (Windows NT/2000)Configuring Auto Path using the graphical user interface After installing Auto Path, you can start t

Operation 21The Servers window opens.ExampleIf this is the first time that Auto Path is opened after installation, the window shows localhost server b

22 HP Auto Path XP: User’s Guide (Windows NT/2000)NavigationThe Auto Path GUI configuration windows feature a navigational tree structure that shows t

Operation 23Device nodes Device nodes are identified by device names. Select to display the Device Settings window; see “Device Settings window” (page

24 HP Auto Path XP: User’s Guide (Windows NT/2000)Servers windowAuto Path opens with the Servers window. This window shows the names of the servers an

Operation 25Status The status of the server:Auto Path Server Up The target server isoperational.Auto Path Server Down The target server is down orit i

26 HP Auto Path XP: User’s Guide (Windows NT/2000)Adding a serverYou can add a new server to the list of available servers for Auto Path by using the

Operation 27Deleting a serverYou can delete a server from the list of available servers for Auto Path using the Delete Server dialog box.To delete a s

28 HP Auto Path XP: User’s Guide (Windows NT/2000)Refreshing the windowThe View drop-down menu allows you to refresh the display to show the current s

Operation 29Diagnostic message panel The main window provides a diagnostic message panel that displays error messages periodically for the active (sel

31 Auto Path features 5Auto Path description 6Dynamic load balancing 7Automatic failover and recovery 8System requirements 9Product Contents 10Auto Pa

30 HP Auto Path XP: User’s Guide (Windows NT/2000)Error Log FileFor the default installation, error messages are recorded in an Auto Path log file:\hp

Operation 31Server Settings windowUse the Server Settings window to change the update times for the server status, device data, and path performance d

32 HP Auto Path XP: User’s Guide (Windows NT/2000)Accessing Auto Path helpUse the Help drop-down menu to access Auto Path help.Example

Operation 33About windowThe About window displays the HP Auto Path version number.

34 HP Auto Path XP: User’s Guide (Windows NT/2000)Server Details windowThe Server Details window shows the disk arrays and adapters connected to the s

Operation 35Adapters A folder equivalent to the Adapters node in the tree view. Select to display the Adapters window; see “Adapters window” (page 53)

36 HP Auto Path XP: User’s Guide (Windows NT/2000)Disk Arrays windowThe Disk Arrays window shows the details of the disk arrays connected to the selec

Operation 37Devices windowThe Devices window displays the devices for the selected disk array. This window is a view-only window; there are no user-co

38 HP Auto Path XP: User’s Guide (Windows NT/2000)State The state of the device: Active The device is in use.Failed The device is not in use or all

Operation 39Adding new devices and paths Windows NTWhen you add a new device or a new path to an existing device, you mustrun Windows Disk Administrat

4Accessing Auto Path help 32About window 33Server Details window 34Disk Arrays window 36Devices window 37Adding new devices and paths 39Device Settin

40 HP Auto Path XP: User’s Guide (Windows NT/2000)Device Settings windowThe Device Settings window shows the paths to a device and its load balance po

Operation 41Path # The index number for the path.State The state of the path: Active The path to the device is available for I/O.Failed The path to t

42 HP Auto Path XP: User’s Guide (Windows NT/2000)Setting the load balancing policy The Device Settings window lets you set the load balancing policy

Operation 43To set the load balancing policy:1. From the tree view, select the server, disk array, and device that you want to set the load balancing

44 HP Auto Path XP: User’s Guide (Windows NT/2000)Setting the preferred pathThe Device Settings window lets you set the preferred path when you have n

Operation 453. Select Set.The no load balancing policy and preferred path are applied.

46 HP Auto Path XP: User’s Guide (Windows NT/2000)Path Performance windowThe Path Performance window allows you to create and view performance charts

Operation 47Chart parametersPaths Drop-down box that is used to select the index number of a path to be charted.Counter A list of available counters,

48 HP Auto Path XP: User’s Guide (Windows NT/2000)Device settings controlsLoad Balancing PolicyDisplays the load balancing policy for the device. The

Operation 49Saving chart settingsYou can save the settings of a chart for future use using the Save Chart Settings option.To save chart settings:1. Se

5AUTO PATH FEATURESHP Auto Path provides automatic input/output (I/O) path failover and load balancing for host systems configured with multiple host

50 HP Auto Path XP: User’s Guide (Windows NT/2000)Opening and restoring chart settingsYou can restore previously saved chart settings by opening a cha

Operation 51Removing a plot from the chartYou can remove an unwanted plot from the chart using the Delete From Chart option.To delete a plot from the

52 HP Auto Path XP: User’s Guide (Windows NT/2000)Changing settingsYou can change the vertical maximum of a chart using the Chart Settings dialog box.

Operation 53Adapters windowThe Adapters window lists all the Auto Path-capable adapters on the system. This window is a view-only window, and there ar

54 HP Auto Path XP: User’s Guide (Windows NT/2000)# of Paths The number of paths through the adapter.Adapter SCSI Port #The adapter SCSI port number.

Operation 55AdapterPathInfo windowThe AdapterPathInfo window shows the details of the various paths through the adapter. This window is a view-only wi

56 HP Auto Path XP: User’s Guide (Windows NT/2000)Path State The state of the path: Active The path to the device is availablefor I/O.Failed The path

Operation 57Using Windows Performance MonitorWindows Performance Monitor also allows you to create and view performance charts for selected paths of a

58 HP Auto Path XP: User’s Guide (Windows NT/2000)

59COMMAND-LINE INTERFACEThe Auto Path command-line interface (CLI) can be used only on hosts connected to multipath-capable devices with the Auto Path

6 HP Auto Path XP: User’s Guide (Windows NT/2000)Auto Path descriptionThe HP Auto Path software performs dynamic load balancing of data flow through m

autopath adapters60 HP Auto Path XP: User’s Guide (Windows NT/2000)autopath adaptersDisplay adapter namesSyntax autopath adaptersDescription The autop

autopath devicesCommand-line interface 61autopath devices Display devicesSyntax autopath devicesDescription The autopath devices command displays the

autopath help62 HP Auto Path XP: User’s Guide (Windows NT/2000)autopath help Display helpSyntax autopath helpDescription The autopath help command ope

autopath paths deviceCommand-line interface 63autopath paths device Display paths to deviceDescription The autopath paths device command displays the

autopath set device64 HP Auto Path XP: User’s Guide (Windows NT/2000)autopath set deviceSet load-balancing policy or preferred pathSyntax autopath set

65TROUBLESHOOTINGTroubleshooting can be performed by the customer or an HP service representative, depending on your HP service contract. If you are u

66 HP Auto Path XP: User’s Guide (Windows NT/2000)Recovering after a failureWhen a path fails, it is no longer used by Auto Path. After the path is re

Troubleshooting 67TroubleshootingTo troubleshoot Auto Path, you can use these troubleshooting tools:• Event ViewerThe Event Viewer logs path failovers

68 HP Auto Path XP: User’s Guide (Windows NT/2000)Contacting HP customer serviceIf you call HP customer support, provide as much information about the

69INDEXAAbout windowdescription 33AdapterPathInfo windowdescription 55Adapters windowdescription 53autopath adapterssyntax description 60autopath devi

Auto Path features 7Dynamic load balancingAuto Path performs dynamic load balancing while monitoring each path to ensure that the I/O transaction is c

70 HP Auto Path XP: User’s Guide (Windows NT/2000)Iinstallationdeinstalling 17procedure 16requirements 9Lload balancingdescription 7load balancing pol

8 HP Auto Path XP: User’s Guide (Windows NT/2000)Automatic failover and recoveryIn the event of a failure of any part of a path between the disk array

Auto Path features 9System requirementsTo install Auto Path, the system must conform to these requirements:• Windows NT with service pack 6• 30 MB of