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HP StorageWorks
XP24000/XP20000 External Storage
Software User Guide
Abstr ac t
This guide describes how to connect and map external storage to HP StorageWorks XP24000/XP20000 storage systems.
Topics include instructions for setting ports and paths, mapping volumes, maintaining connections, using spreadsheets to map
external volumes, and mapping remote command devices. The intended audience is a storage system administrator or authorized
service provider with independent knowledge of HP StorageW
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© Copyright 2007, 2011 Hewlett-Packard Development Company, L.P. Confidential computer software. Valid license from HP required for possession, use or copying. Consistent with FAR 12.211 and 12.212, Commercial Computer Software, Computer Software Documentation, and Technical Data for Commercial Items are licensed to the U.S. Government under vendor's standard commercial license. The information contained herein is subject to change without notice. The only warranties for HP products and services
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Contents 1 Overview of HP StorageWorks XP External Storage Software...........................9 XP External Storage..................................................................................................................9 Unifying Copy Operations between Different Storage Systems........................................................9 Unifying Connections from a Host to Different Storage Systems.....................................................10 2 About XP External Storage Operatio
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3 Preparing for XP External Storage Operations..............................................37 System Requirements...............................................................................................................37 Storage Systems Supported as External Storage Systems.........................................................37 XP External Storage Requirements........................................................................................37 Guidelines for XP External Storage O
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Changing the Cross-subsystem Path......................................................................................83 Replacing All Cross-subsystem Paths with Newly Added Cross-subsystem Paths...........................83 Checking the External Volume Details........................................................................................85 LDEV Information Dialog Box...............................................................................................85 Mapping Path Informati
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Restrictions on Initiator/External MIX Mode.........................................................................125 8 Troubleshooting......................................................................................126 Troubleshooting for XP External Storage...................................................................................126 Troubleshooting the Mapping Path.....................................................................................127 Troubleshooting Volume Dis
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IBM DS3000/DS4000/DS5000 Series...................................................................................150 System Parameter for Connecting IBM SVC Series.....................................................................150 Notes on Connecting IBM XIV Series.......................................................................................150 Fujitsu FibreCAT CX Series.....................................................................................................151 System
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Parameters.................................................................................................................164 Example....................................................................................................................164 checkstatus Command......................................................................................................164 Syntax...................................................................................................................
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1 Overview of HP StorageWorks XP External Storage Software This chapter provides an overview of XP External Storage. • “XP External Storage” (page 9) • “Unifying Copy Operations between Different Storage Systems” (page 9) • “Unifying Connections from a Host to Different Storage Systems” (page 10) Unless otherwise specified, the term s t o r age s y s t e m in this document refers to the following disk arrays: • HP StorageWorks XP24000 Disk Array • HP StorageWorks XP20000 Disk Array The GUI illus
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F igur e 1 Unif y ing Cop y O per ations bet w een Dif f er ent S t or ag e S y stems Unifying Connections from a Host to Different Storage Systems When a system has multiple storage systems, a host usually needs to connect all storage systems. When a system administrator configures the connections from a host to volumes, they need to follow the different instructions depending on the storage systems. If you install XP External Storage, a system administrator only needs to configure the connecti
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F igur e 2 Unif y ing Conn ec tions fr om a Ho st t o Dif f er ent S t or ag e S y stems Unifying Connections from a Host to Different Storage Systems 11
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2 About XP External Storage Operations This chapter explains the functions and the applications of XP External Storage. • “Connecting External Storage Systems” (page 12) • “XP External Storage Components” (page 13) • “XP External Storage Operations” (page 15) • “Configuring XP External Storage” (page 16) • “Choosing Mapping Policy” (page 26) • “Using a Mapped External Volume from a Connected Host” (page 27) • “Interoperability with other Products and Functions” (page 29) • “Examples of Using Ext
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F igur e 3 Concept o f XP Exter nal S t or ag e By mapping an external volume as an internal volume using XP External Storage as shown in Figure 3 (page 13), it becomes possible to operate the external volume using Remote Web Console as if it is a volume in the local storage system. XP External Storage Components Systems using XP External Storage usually contain the following components: • Local storage system • External storage system • Remote Web Console computer • XP External Storage • Extern
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F igur e 4 XP Exter nal S t or ag e Compon ents This section describes the details on the storage systems, cross-subsystem paths, volumes and mapping paths as shown in Figure 4 (page 14). Storage Systems and Cross-subsystem Paths Before using XP External Storage, connect the Fibre Channel port of the local storage system to the external storage system port with the fiber cable. The route between the ports that are connected with the cable, is called the cross-subsystem path. The Fibre Channel po
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local storage system. After the mapping, you can manipulate the external volume from the local storage system in the same way as manipulating an internal volume. When external volumes in external storage systems are mapped as internal volumes in your storage systems, the external volumes can be accessed and copied by hosts connecting to your storage systems, but not by hosts connecting to the external storage systems. This document sometimes uses the term e xt e r nal v o lume or ma pped e xt e
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• Using spreadsheets to map external volumes XP External Storage supports Configuration File Loader spreadsheets. These spreadsheets allow you to configure the mapping of multiple external volumes at the same time, which is efficient when mapping large numbers of volumes. For details, see “Using Spreadsheets for XP External Storage Operations” (page 101). • Setting the remote command device By using the remote command device, you can manipulate volumes in the external storage system from RAID Ma
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(internal volumes). Identify the volumes in each external storage system that should be mapped as internal volumes. • You cannot access the data that is stored in an external volume beyond the maximum available capacity. For example, if an external volume of 100 GB was mapped as an internal volume of 70 GB, then 30 GB of the external volume would not be accessible from the local storage system side. • You cannot map an external volume whose capacity is smaller than the minimum available capacity
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set to Disable. All I/O to and from the local storage system (either Enable or Disable) always uses cache mode. Write operations are always backed up in duplex cache. ◦ If you select Enabl e, after receiving the data into the local storage system cache memory , the local storage system signals the host that an I/O operation has completed and then asynchronously destages the data to the external storage system. ◦ When emulating OPEN volumes and selecting Disabl e, the local storage system signals
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If two or more external volumes use the same redundant cross-subsystem paths, these external volumes can be a group. This group is called a path group. In the redundant cross-subsystem paths, the cross-subsystem path that has the highest priority is called the primary path. The cross-subsystem paths other than the primary path are called alternate paths. • Setting of the path groups A path group is automatically set when you map the external volume or when you change a path group by using spread
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the local storage system for the alternate path. Therefore, CL1 port and CL2 port are specified as shown in the figure. F igur e 5 Ex ampl e o f Alter nate P at h Set ting Figure 6 (page 20) illustrates an example of setting an alternate path when a switch is used. Two ports are specified in the local storage system, and connected to the ports in the external storage system through the switch. In this case, two ports of different clusters are specified in the local storage system. Therefore, the
