HP MSA 2040 Cable Configuration Guide - Hewlett Packard

HP MSA 2040
Cable Configuration Guide
Abstract
This document contains cable configuration information for HP MSA 2040 controller enclosures and supported expansion drive
enclosures.
HP Part Number: 729691-001
Published: July 2013
Edition: 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 express
warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall
not 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
Revision # 1
Initial release
July 2013

Contents
1 Overview .................................................................................................4
About this document.................................................................................................................4
Complete system example..........................................................................................................4
Configuration notes...................................................................................................................5
2 Connecting the MSA 2040 array to remote management hosts........................6
3 Connecting the MSA 2040 array to expansion drive enclosures........................7
Supported expansion drive enclosures.........................................................................................7
Drive enclosure connection guidelines.........................................................................................7
Fault-tolerant and straight-through drive enclosure cabling..............................................................7
Fault-tolerant cabling example...............................................................................................7
Straight-through cabling example...........................................................................................8
Single drive enclosure configurations.........................................................................................10
Connecting a single MSA 2040 drive enclosure.....................................................................10
Connecting a single D2700 drive enclosure...........................................................................10
Homogeneous drive enclosure configurations.............................................................................11
Connecting multiple D2700 drive enclosures.........................................................................11
Mixed-connect drive enclosure configurations.............................................................................12
Connecting an MSA 2040/D2700 mixed-connect configuration..............................................12
Maximum number of drives example: D2700 drive enclosures......................................................13
Maximum number of enclosures example: MSA 2040 drive enclosures..........................................14
4 Support and other resources......................................................................15
Contacting HP........................................................................................................................15
Subscription Service...........................................................................................................15
Related information.................................................................................................................15
Websites..........................................................................................................................15
Typographic conventions.........................................................................................................16
Customer self repair................................................................................................................16
5 Documentation feedback...........................................................................18
A Regulatory information..............................................................................19
Turkey RoHS material content declaration...................................................................................19
Ukraine RoHS material content declaration................................................................................19
Warranty information..............................................................................................................19
Contents 3

1 Overview
About this document
This document contains cable configuration information for HP MSA 2040 controller enclosures
and 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 in
servicing and installing computer equipment, and are trained in recognizing hazards in products
and hazardous energy levels.
For complete information on installing and configuring your product, see the user guide provided
with your HP MSA 2040. User documents are provided on the HP MSA 2040 SW Support and
Documentation DVD shipped with the product.For the latest version of a document, see the HP
Manuals website: http://www.hp.com/support/msa2040/manuals.
Complete system example
The following figure shows an example of a dual-controller, direct-connect enclosure configuration
with two servers accessing the storage.
Two servers are direct-connected to a dual-controller HP MSA 2040 array. The MSA 2040 array
is in turn connected to two dual-I/O module HP MSA 2040 6Gb 3.5” 12-drive enclosures using
Mini-SAS to Mini-SAS cables.
1. Server
2. Server
3. MSA 2040 array
enclosure
4. MSA 2040 drive
enclosure
5. 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 CLI
port. This device driver file can be found on the HP MSA 2040 SW Support and Documentation
DVD that is included with your system and at http://www.hp.com/support/msa2040: click
HP Support & Drivers, select your product, click Download drivers and software, select your
Windows operating system, and then select Driver - Storage Controller.
NOTE: Connecting to the CLI port is an out-of-band connection because it communicates outside
of 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 connection
is used, cabling to the CLI port might not be necessary. This method uses the Discovery utility on
the HP MSA 2040 SW Support and Documentation DVD that is included with your system. Using
the Discovery utility is the best way to discover the controllers' IP addresses automatically, as you
can use them to log into and manage your controllers using a web browser for the SMU web-based
interface or Telnet for the CLI.
Configuration notes 5

2 Connecting the MSA 2040 array to remote management
hosts
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 cable
from the Ethernet network management port on each MSA 2040 controller to a switch that your
management 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 drive
enclosures
To connect the MSA 2040 array to expansion drive enclosures, connect a Mini-SAS to Mini-SAS
cable from the SAS expansion port on each MSA 2040 controller to an I/O module in the drive
enclosure. Cabling varies, depending on which of the two supported cabling schemes you use:
• Fault-tolerant cabling
• Straight-through cabling
For more information about these cabling schemes, see “Fault-tolerant and straight-through
cabling” (page 7)
For more information about your MSA 2040, see the HP MSA 2040 Best Practices guide, available
on the HP website (http://www.hp.com/support/msa2040/BestPractices).
Supported expansion drive enclosures
The MSA 2040 supports the following drive enclosures:
Drive enclosure model
HP MSA 2040
HP P2000
HP D2700
Description
3.5” 12-drive enclosure
3.5” 12-drive enclosure
2.5” 25-drive enclosure
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, available
on 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, and
D2700 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. For
a 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 cabling
MSA 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 access
to other enclosures. When connecting multiple drive enclosures, use fault-tolerant cabling to ensure
the 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 the
array.
Fault-tolerant cabling example
The following figure shows an MSA 2040 array connected to two D2700 drive enclosures using
fault-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 enclosures
are shaded red. Fault-tolerant cabling requires that you connect MSA 2040 controller A to I/O
module A of the first drive enclosure and cascade this connection on to I/O module A of the last
drive enclosure (shown in green). Likewise, you must connect MSA 2040 controller B to I/O module
B of the last drive enclosure and cascade this connection on to I/O module B of the first drive
enclosure (shown in red).
Straight-through cabling example
The following figure shows An MSA 2040 array connected to two D2700 drive enclosures using
straight-through cabling.
Straight-through cabling requires that you connect MSA 2040 controller A to I/O module A of the
first drive enclosure which is in turn connected to I/O module A of the last drive enclosure (shown
in green). MSA 2040 controller B is connected to I/O module B of the first drive enclosure which
is 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 the
array. 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 an
enclosure 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 configurations
The following illustrations show examples of expanding storage from an MSA 2040 controller
enclosure to a single drive enclosure.
Connecting a single MSA 2040 drive enclosure
The following figure shows a dual-controller MSA 2040 array connected to a dual-I/O module
MSA 2040 drive enclosure.
Connecting a single D2700 drive enclosure
The following figure shows a dual-controller MSA 2040 array connected to a dual-I/O module
D2700 drive enclosure.
10 Connecting the MSA 2040 array to expansion drive enclosures

Homogeneous drive enclosure configurations
The following illustration shows expanding storage from MSA 2040 controller enclosures to multiple
homogeneous drive enclosures, that is, drive enclosures of the same model.
Connecting multiple D2700 drive enclosures
The following figure shows a dual-controller MSA 2040 array connected to two D2700 drive
enclosures.
1. MSA 2040 array
enclosure
2. D2700 drive enclosure
3. D2700 drive enclosure
Homogeneous drive enclosure configurations 11

Mixed-connect drive enclosure configurations
The following illustration shows an example of expanding storage from an MSA 2040 array
enclosure to multiple drive enclosures of different models.
Connecting an MSA 2040/D2700 mixed-connect configuration
The following figure shows a dual-controller MSA 2040 array connected to MSA 2040 and D2700
drive enclosures. There are no restrictions to the order of enclosures when adding MSA 2040 drive
enclosures and D2700 drive enclosures.
1. MSA 2040 array
enclosure
2. MSA 2040 drive
enclosure
3. D2700 drive enclosure
12 Connecting the MSA 2040 array to expansion drive enclosures

Maximum number of drives example: D2700 drive enclosures
The following figure shows an example of an array configuration that demonstrates the maximum
number of drives that are allowed in an array configuration.
An MSA 2040 array is connected to seven D2700 drive enclosures. Each D2700 drive enclosure
contains 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 199
drives allowed.
NOTE: When connecting more than two drive enclosures, you may be required to purchase
additional 1m or 2m cables. Spanning 6 or 7 enclosures requires a 2m mini-SAS cable to enable
the proper bend radius.
1. MSA 2040 array
enclosure
2. D2700 drive enclosure
3. D2700 drive enclosure
4. D2700 drive enclosure
5. D2700 drive enclosure
6. D2700 drive enclosure
7. D2700 drive enclosure
8. D2700 drive enclosure
Maximum number of drives example: D2700 drive enclosures 13

Maximum number of enclosures example: MSA 2040 drive enclosures
The following figure shows an example of an array configuration that demonstrates the maximum
number of enclosures (eight, including the controller enclosure) that are allowed in an array
configuration.
An MSA 2040 array is connected to seven MSA 2040 drive enclosures. Each MSA 2040 drive
enclosure 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 can
be connected, because the maximum of 8 enclosures has already been reached.
NOTE: When connecting more than two drive enclosures, you may be required to purchase
additional 1m or 2m cables. Spanning 6 or 7 enclosures requires a 2m mini-SAS cable to enable
the proper bend radius.
1. MSA 2040 array
enclosure
2. MSA 2040 drive
enclosure
3. MSA 2040 drive
enclosure
4. MSA 2040 drive
enclosure
5. MSA 2040 drive
enclosure
6. MSA 2040 drive
enclosure
7. MSA 2040 drive
enclosure
8. MSA 2040 drive
enclosure
14 Connecting the MSA 2040 array to expansion drive enclosures

4 Support and other resources
Contacting 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 Service
HP 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 numerous
other product resources.
After subscribing, locate your products by selecting Business support and then Storage under
Product Category.
Related information
Websites
The 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 Instructions
You can find these documents on the HP MSA 2040 user documents page: http://www.hp.com/
support/msa2040/manuals
• 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 conventions
Table 1 Document conventions
Convention
Blue text: Table 1 (page 16)
Blue, bold, underlined text
Blue, underlined text: http://www.hp.com
Element
Cross-reference links
email addresses
Website addresses
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 menu
and list items, buttons, tabs, and check boxes
Italic text
Text emphasis
Monospace text • File and directory names
• System output
• Code
• Commands, their arguments, and argument values
Monospace, italic text • Code variables
• Command variables
Monospace, bold text
Emphasized monospace text
WARNING!
CAUTION:
IMPORTANT:
Indicates that failure to follow directions could result in bodily harm or death.
Indicates that failure to follow directions could result in damage to equipment or data.
Provides clarifying information or specific instructions.
NOTE:
Provides additional information.
TIP:
Provides helpful hints and shortcuts.
Customer self repair
HP customer self repair (CSR) programs allow you to repair your HP product. If a CSR part needs
replacing, HP ships the part directly to you so that you can install it at your convenience. Some
parts do not qualify for CSR. Your HP-authorized service provider will determine whether a repair
can 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 feedback
HP is committed to providing documentation that meets your needs. To help us improve the
documentation, send any errors, suggestions, or comments to Documentation Feedback
(docsfeedback@hp.com). Include the document title and part number, version number, or the URL
when submitting your feedback.
18 Documentation feedback

A Regulatory information
For important safety, environmental, and regulatory information, see Safety and Compliance
Information for Server, Storage, Power, Networking, and Rack Products, available at http://
www.hp.com/support/Safety-Compliance-EnterpriseProducts.
Turkey RoHS material content declaration
Türkiye Cumhuriyeti: EEE Yönetmeliğine Uygundur
Ukraine RoHS material content declaration
Обладнання відповідає вимогам Технічного регламенту щодо обмеження використання деяких
небезпечних речовин в електричному та електронному обладнанні, затвердженого постановою
Кабінету Міністрів України від 3 грудня 2008 № 1057
Warranty information
HP ProLiant and X86 Servers and Options
http://www.hp.com/support/ProLiantServers-Warranties
HP Enterprise Servers
http://www.hp.com/support/EnterpriseServers-Warranties
HP Storage Products
http://www.hp.com/support/Storage-Warranties
HP Networking Products
http://www.hp.com/support/Networking-Warranties
Turkey RoHS material content declaration 19