HP MSA 2040Cable Configuration Guide

AbstractThis document contains cable configuration information for HP MSA 2040 controller enclosures and supported expansion driveenclosures.

HP Part Number: 729691-001Published: July 2013Edition: 1

© Copyright 2013 Hewlett-Packard Development Company, L.P.

The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the expresswarranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shallnot be liable for technical or editorial errors or omissions contained herein.

Acknowledgments

Microsoft®, Windows®, Windows XP®, and Windows NT® are U.S. registered trademarks of Microsoft Corporation.

Warranty

WARRANTY STATEMENT: To obtain a copy of the warranty for this product, see the warranty information website:

http://www.hp.com/go/storagewarranty

Revision History

July 2013Revision # 1Initial release

Contents1 Overview .................................................................................................4

About this document.................................................................................................................4Complete system example..........................................................................................................4Configuration notes...................................................................................................................5

2 Connecting the MSA 2040 array to remote management hosts........................63 Connecting the MSA 2040 array to expansion drive enclosures........................7

Supported expansion drive enclosures.........................................................................................7Drive enclosure connection guidelines.........................................................................................7Fault-tolerant and straight-through drive enclosure cabling..............................................................7

Fault-tolerant cabling example...............................................................................................7Straight-through cabling example...........................................................................................8

Single drive enclosure configurations.........................................................................................10Connecting a single MSA 2040 drive enclosure.....................................................................10Connecting a single D2700 drive enclosure...........................................................................10

Homogeneous drive enclosure configurations.............................................................................11Connecting multiple D2700 drive enclosures.........................................................................11

Mixed-connect drive enclosure configurations.............................................................................12Connecting an MSA 2040/D2700 mixed-connect configuration..............................................12

Maximum number of drives example: D2700 drive enclosures......................................................13Maximum number of enclosures example: MSA 2040 drive enclosures..........................................14

4 Support and other resources......................................................................15Contacting HP........................................................................................................................15

Subscription Service...........................................................................................................15Related information.................................................................................................................15

Websites..........................................................................................................................15Typographic conventions.........................................................................................................16Customer self repair................................................................................................................16

5 Documentation feedback...........................................................................18A Regulatory information..............................................................................19

Turkey RoHS material content declaration...................................................................................19Ukraine RoHS material content declaration................................................................................19Warranty information..............................................................................................................19

Contents 3

1 OverviewAbout this document

This document contains cable configuration information for HP MSA 2040 controller enclosuresand supported expansion drive enclosures. The information is for the person who installs,administers, and troubleshoots servers and storage systems. HP assumes that you are qualified inservicing and installing computer equipment, and are trained in recognizing hazards in productsand hazardous energy levels.For complete information on installing and configuring your product, see the user guide providedwith your HP MSA 2040. User documents are provided on the HP MSA 2040 SW Support andDocumentation DVD shipped with the product.For the latest version of a document, see the HPManuals website: http://www.hp.com/support/msa2040/manuals.

Complete system exampleThe following figure shows an example of a dual-controller, direct-connect enclosure configurationwith two servers accessing the storage.Two servers are direct-connected to a dual-controller HP MSA 2040 array. The MSA 2040 arrayis in turn connected to two dual-I/O module HP MSA 2040 6Gb 3.5” 12-drive enclosures usingMini-SAS to Mini-SAS cables.

1. Server2. Server3. MSA 2040 array

enclosure4. MSA 2040 drive

enclosure5. MSA 2040 drive

enclosure

4 Overview

Configuration notes• A maximum of eight enclosures (including the controller enclosure) are allowed in the storage

system.• For Windows computers that are cabled to the MSA 2040 controller CLI port, a special device

driver file must be downloaded and installed on the Windows computer prior to using the CLIport. This device driver file can be found on the HP MSA 2040 SW Support and DocumentationDVD that is included with your system and at http://www.hp.com/support/msa2040: clickHP Support & Drivers, select your product, click Download drivers and software, select yourWindows operating system, and then select Driver - Storage Controller.

NOTE: Connecting to the CLI port is an out-of-band connection because it communicates outsideof the data paths used to transfer information from a computer or network to the controller enclosure.An in-band connection can also be used to configure a new controller. If an in-band connectionis used, cabling to the CLI port might not be necessary. This method uses the Discovery utility onthe HP MSA 2040 SW Support and Documentation DVD that is included with your system. Usingthe Discovery utility is the best way to discover the controllers' IP addresses automatically, as youcan use them to log into and manage your controllers using a web browser for the SMU web-basedinterface or Telnet for the CLI.

Configuration notes 5

2 Connecting the MSA 2040 array to remote managementhosts

The management host manages systems out-of-band over an Ethernet network.To connect the MSA 2040 array to a remote management host, connect an RJ-45 Ethernet cablefrom the Ethernet network management port on each MSA 2040 controller to a switch that yourmanagement host can access (preferably on the same subnet).

6 Connecting the MSA 2040 array to remote management hosts

3 Connecting the MSA 2040 array to expansion driveenclosures

To connect the MSA 2040 array to expansion drive enclosures, connect a Mini-SAS to Mini-SAScable from the SAS expansion port on each MSA 2040 controller to an I/O module in the driveenclosure. Cabling varies, depending on which of the two supported cabling schemes you use:

• Fault-tolerant cabling

• Straight-through cablingFor more information about these cabling schemes, see “Fault-tolerant and straight-throughcabling” (page 7)For more information about your MSA 2040, see the HP MSA 2040 Best Practices guide, availableon the HP website (http://www.hp.com/support/msa2040/BestPractices).

Supported expansion drive enclosuresThe MSA 2040 supports the following drive enclosures:

DescriptionDrive enclosure model

3.5” 12-drive enclosureHP MSA 2040

3.5” 12-drive enclosureHP P2000

2.5” 25-drive enclosureHP D2700

Drive enclosure connection guidelines• Expansion drive enclosures can be connected to an operational MSA 2040 array.

• Use only supported cables. For more information, see the MSA 2040 QuickSpecs, availableon the HP website: http://www.hp.com/go/msa2040/quickspecs.

• Mini-SAS to Mini-SAS 0.5 m (1.64 ft) cables are provided with the MSA 2040, P2000, andD2700 drive enclosures (one for each I/O module).

• The maximum length cable supported for connecting drive enclosures is 2 m (6.56 ft).

• Cables longer than those supplied with the drive enclosure must be purchased separately. Fora list of cables available from HP, see the HP MSA 2040 QuickSpecs.

• Eight enclosures maximum (including the array enclosure) are supported.

Fault-tolerant and straight-through drive enclosure cablingMSA 2040 firmware supports both fault-tolerant and straight-through SAS cabling.Fault-tolerant cabling allows any drive enclosure to fail or be removed while maintaining accessto other enclosures. When connecting multiple drive enclosures, use fault-tolerant cabling to ensurethe highest level of fault tolerance.Straight-through cabling does not provide the same level of fault-tolerance as fault-tolerant cabling,but does provide some performance benefits as well as ensuring that all disk are visible to thearray.

Fault-tolerant cabling exampleThe following figure shows an MSA 2040 array connected to two D2700 drive enclosures usingfault-tolerant cabling.

Supported expansion drive enclosures 7

I/O modules A on the drive enclosures are shaded green. I/O modules B on the drive enclosuresare shaded red. Fault-tolerant cabling requires that you connect MSA 2040 controller A to I/Omodule A of the first drive enclosure and cascade this connection on to I/O module A of the lastdrive enclosure (shown in green). Likewise, you must connect MSA 2040 controller B to I/O moduleB of the last drive enclosure and cascade this connection on to I/O module B of the first driveenclosure (shown in red).

Straight-through cabling exampleThe following figure shows An MSA 2040 array connected to two D2700 drive enclosures usingstraight-through cabling.Straight-through cabling requires that you connect MSA 2040 controller A to I/O module A of thefirst drive enclosure which is in turn connected to I/O module A of the last drive enclosure (shownin green). MSA 2040 controller B is connected to I/O module B of the first drive enclosure whichis in turn connected to I/O module B of the last drive enclosure (shown in red).

IMPORTANT: Fault-tolerant cabling provides the highest level of fault-tolerance protection for thearray. Using straight-through cabling can sometimes provide increased performance in the array;however, it also increases the risk of losing access to one or more enclosures in the event of anenclosure failure or removal.

8 Connecting the MSA 2040 array to expansion drive enclosures

Fault-tolerant and straight-through drive enclosure cabling 9

Single drive enclosure configurationsThe following illustrations show examples of expanding storage from an MSA 2040 controllerenclosure to a single drive enclosure.

Connecting a single MSA 2040 drive enclosureThe following figure shows a dual-controller MSA 2040 array connected to a dual-I/O moduleMSA 2040 drive enclosure.

Connecting a single D2700 drive enclosureThe following figure shows a dual-controller MSA 2040 array connected to a dual-I/O moduleD2700 drive enclosure.

10 Connecting the MSA 2040 array to expansion drive enclosures

Homogeneous drive enclosure configurationsThe following illustration shows expanding storage from MSA 2040 controller enclosures to multiplehomogeneous drive enclosures, that is, drive enclosures of the same model.

Connecting multiple D2700 drive enclosuresThe following figure shows a dual-controller MSA 2040 array connected to two D2700 driveenclosures.

1. MSA 2040 arrayenclosure

2. D2700 drive enclosure3. D2700 drive enclosure

Homogeneous drive enclosure configurations 11

Mixed-connect drive enclosure configurationsThe following illustration shows an example of expanding storage from an MSA 2040 arrayenclosure to multiple drive enclosures of different models.

Connecting an MSA 2040/D2700 mixed-connect configurationThe following figure shows a dual-controller MSA 2040 array connected to MSA 2040 and D2700drive enclosures. There are no restrictions to the order of enclosures when adding MSA 2040 driveenclosures and D2700 drive enclosures.

1. MSA 2040 arrayenclosure

2. MSA 2040 driveenclosure

3. D2700 drive enclosure

12 Connecting the MSA 2040 array to expansion drive enclosures

Maximum number of drives example: D2700 drive enclosuresThe following figure shows an example of an array configuration that demonstrates the maximumnumber of drives that are allowed in an array configuration.An MSA 2040 array is connected to seven D2700 drive enclosures. Each D2700 drive enclosurecontains 25 disk drives and the MSA 2040 SFF controller enclosure contains 24 disk drives.Combined, the total number of disk drives in this array configuration add up to the maximum 199drives allowed.

NOTE: When connecting more than two drive enclosures, you may be required to purchaseadditional 1m or 2m cables. Spanning 6 or 7 enclosures requires a 2m mini-SAS cable to enablethe proper bend radius.

1. MSA 2040 arrayenclosure

2. D2700 drive enclosure3. D2700 drive enclosure4. D2700 drive enclosure5. D2700 drive enclosure6. D2700 drive enclosure7. D2700 drive enclosure8. D2700 drive enclosure

Maximum number of drives example: D2700 drive enclosures 13

Maximum number of enclosures example: MSA 2040 drive enclosuresThe following figure shows an example of an array configuration that demonstrates the maximumnumber of enclosures (eight, including the controller enclosure) that are allowed in an arrayconfiguration.An MSA 2040 array is connected to seven MSA 2040 drive enclosures. Each MSA 2040 driveenclosure contains 12 drives, and the MSA 2040 LFF controller enclosure contains 12 drives.Combined, the total number of drives adds up to 96 LFF drives, but no additional enclosures canbe connected, because the maximum of 8 enclosures has already been reached.

NOTE: When connecting more than two drive enclosures, you may be required to purchaseadditional 1m or 2m cables. Spanning 6 or 7 enclosures requires a 2m mini-SAS cable to enablethe proper bend radius.

1. MSA 2040 arrayenclosure

2. MSA 2040 driveenclosure

3. MSA 2040 driveenclosure

4. MSA 2040 driveenclosure

5. MSA 2040 driveenclosure

6. MSA 2040 driveenclosure

7. MSA 2040 driveenclosure

8. MSA 2040 driveenclosure

14 Connecting the MSA 2040 array to expansion drive enclosures

4 Support and other resourcesContacting HP

For worldwide technical support information, see the HP support website:http://www.hp.com/support

Before contacting HP, collect the following information:

• Product model names and numbers

• Technical support registration number (if applicable)

• Product serial numbers

• Error messages

• Operating system type and revision level

• Detailed questions

Subscription ServiceHP strongly recommends that customers register online using the Subscriber's choice web site:http://www.hp.com/go/e-updates.Subscribing to this service provides you with e-mail updates on the latest product enhancements,newest driver versions, and firmware documentation updates as well as instant access to numerousother product resources.After subscribing, locate your products by selecting Business support and then Storage underProduct Category.

Related informationThe following documents provide related information:

• HP MSA 2040 Quick Start Instructions

• HP MSA 2040 User Guide

• HP MSA 2040 SMU Reference Guide

• HP MSA 2040 CLI Reference Guide

• HP MSA 2040 Event Descriptions Reference Guide

• HP MSA System Racking InstructionsYou can find these documents on the HP MSA 2040 user documents page: http://www.hp.com/support/msa2040/manuals

Websites• HP MSA 2040 home page: http://www.hp.com/go/msa2040

• HP MSA 2040 QuickSpecs: http://www.hp.com/go/msa2040/quickspecs

• HP MSA 2040 firmware downloads: http://www.hp.com/support/msa2040/downloads

• HP MSA 2040 user documents: http://www.hp.com/support/msa2040/manuals

• HP MSA 2040 best practices: http://www.hp.com/support/msa2040/bestpractices

• HP MSA 2040 Guided Troubleshooting: http://www.hp.com/support/msa2040/troubleshooting

• HP Single Point of Connectivity Knowledge (SPOCK): http://www.hp.com/storage/spock

Contacting HP 15

• Servers: http://www.hp.com/go/servers

• Storage products: http://www.hp.com/storage

• Storage Networking: http://www.hp.com/go/san

• HP Support: http://www.hp.com/support

• HP Manuals: http://www.hp.com/support/manuals

• HP Downloads: http://www.hp.com/support/downloads

• White papers and Analyst reports: http://www.hp.com/storage/whitepapers

Typographic conventionsTable 1 Document conventions

ElementConvention

Cross-reference linksBlue text: Table 1 (page 16)

email addressesBlue, bold, underlined text

Website addressesBlue, underlined text: http://www.hp.com

Bold text • Keys that are pressed

• Text typed into a GUI element, such as a box

• GUI elements that are clicked or selected, such as menuand list items, buttons, tabs, and check boxes

Text emphasisItalic text

Monospace text • File and directory names

• System output

• Code

• Commands, their arguments, and argument values

Monospace, italic text • Code variables

• Command variables

Emphasized monospace textMonospace, bold text

WARNING! Indicates that failure to follow directions could result in bodily harm or death.

CAUTION: Indicates that failure to follow directions could result in damage to equipment or data.

IMPORTANT: Provides clarifying information or specific instructions.

NOTE: Provides additional information.

TIP: Provides helpful hints and shortcuts.

Customer self repairHP customer self repair (CSR) programs allow you to repair your HP product. If a CSR part needsreplacing, HP ships the part directly to you so that you can install it at your convenience. Someparts do not qualify for CSR. Your HP-authorized service provider will determine whether a repaircan be accomplished by CSR.

16 Support and other resources

For more information about CSR, contact your local service provider, or see the CSR website:http://www.hp.com/go/selfrepair

Customer self repair 17

5 Documentation feedbackHP is committed to providing documentation that meets your needs. To help us improve thedocumentation, send any errors, suggestions, or comments to Documentation Feedback(docsfeedback@hp.com). Include the document title and part number, version number, or the URLwhen submitting your feedback.

18 Documentation feedback

A Regulatory informationFor important safety, environmental, and regulatory information, see Safety and ComplianceInformation for Server, Storage, Power, Networking, and Rack Products, available at http://www.hp.com/support/Safety-Compliance-EnterpriseProducts.

Turkey RoHS material content declarationTürkiye Cumhuriyeti: EEE Yönetmeliğine Uygundur

Ukraine RoHS material content declarationОбладнання відповідає вимогам Технічного регламенту щодо обмеження використання деякихнебезпечних речовин в електричному та електронному обладнанні, затвердженого постановоюКабінету Міністрів України від 3 грудня 2008 № 1057

Warranty information

HP ProLiant and X86 Servers and Optionshttp://www.hp.com/support/ProLiantServers-Warranties

HP Enterprise Servershttp://www.hp.com/support/EnterpriseServers-Warranties

HP Storage Productshttp://www.hp.com/support/Storage-Warranties

HP Networking Productshttp://www.hp.com/support/Networking-Warranties

Turkey RoHS material content declaration 19