Dell PS-M4110 User manual

Dell EqualLogic PS-M4110 Blade StorageArrays
Installation Guide
Version 1.0
Regulatory Model Series DWHH

© Copyright 2012 Dell Inc. All rights reserved.
Dell™ and EqualLogic® are trademarks of Dell Inc.
All trademarks and registered trademarks mentioned herein are the property of their respective owners.
Information in this document is subject to change without notice.
Reproduction in any manner whatsoever without the written permission of Dell is strictly forbidden.
Published: May 2012
Part Number: YVT1V-A00

iii
Table of Contents
Preface v
1Getting Started 1
Before You Begin 2
Installation Safety Precautions 2
Handling the Array 2
Protecting Hardware 3
Shipping Box Contents 4
Environmental Requirements 4
Array Networking Considerations 6
Network Requirements 6
Network Recommendations 8
Optional Considerations 9
2Overview of Array Installation and Setup 11
3Installing an Array 13
Pre-Installation Notes 14
Array Installation Procedure 15
If installing the array into a top slot in the M1000e chassis 15
If installing the array into a bottom slot in the M1000e chassis 15
Front Panel Features and Indicators 20
Releasing the Array Inner Drawer Safety Latch 22
4Configuring the Array 25
Selecting a Configuration Method 25
Collecting Configuration Information 25
Configure the Array 28
Using the CMC GUI to Configure the Array 28
Using the CMC CLI to Configure the Array 35
Using the EqualLogic Setup Utility to Configure the Array 36
Using the Remote Setup Wizard to Configure the Array 40
Setting the Member RAID Policy 41
Using the CLI to Set the RAID Policy 41
Using the Group Manager GUI to Set the RAID Policy 42
Setting up a Dedicated Management Port 46
5Allocating Storage 49
Creating a Volume 49
Using the CLI to Create a Volume 50
Using the GUI to Create a Volume 51
Connecting a Computer to a Volume 53
6After Setting Up a Group 55
Common Group Administration Tasks 56
Advanced Group Administration Tasks 56
7Additional Information 59
NOM Information (Mexico Only) 59
Technical Specifications 60
Index 61

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Table of Contents

v
Preface
Dell EqualLogic PS Series arrays optimize resources by automating capacity, performance, and network load
balancing. Additionally, PS Series arrays offer all-inclusive array management software and firmware updates.
Dell EqualLogic FS Series appliances, combined with PS Series arrays, offer a high performance, high
availability, scalable NAS solution.
Audience
The information in this guide is intended for hardware administrators. Administrators are not required to have
extensive network or storage system experience. However, it may be helpful to understand:
• Basic networking concepts
• Current network environment
• User disk storage requirements
• RAID configurations
• Disk storage management
Note: This manual provides examples of using PS Series arrays in some common network configurations.
However, detailed information about setting up a network is beyond the scope of this manual. For related
networking information, visit support.dell.com. You can also contact your support provider as described in this
section in Preface on page v.
Related Documentation
For detailed information about FS Series appliances, PS Series arrays, groups, volumes, array software, and host
software, log in to the Documentation page at the customer support site.
Dell Online Services
You can learn about Dell products and services with this procedure:
1. Visit http://www.dell.com or the URL specified in any Dell product information.
2. Use the locale menu or click on the link that specifies your country or region.
Dell EqualLogic Storage Solutions
To learn more about Dell EqualLogic products and new releases, visit the Dell EqualLogic Tech Center site:
http://delltechcenter.com/page/EqualLogic. Here you can also see articles, demos, online discussions, and more
details about the benefits of our product family.

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Preface
Technical Support and Customer Service
Dell support service is available to answer your questions about PS Series SAN arrays and FS Series appliances.
Contacting Dell
If you are a customer in the United States or Canada in need of technical support,
call 1-800-945-3355. If you are outside of the United States or Canada, visit Dell EqualLogic Product Support.
If you have an Express Service Code, have it ready. The code helps the Dell automated support telephone
system direct your call more efficiently.
Warranty Information
The MODEL array warranty is included in the shipping box. For information about registering a warranty, visit
http://support.dell.com/support/topics/global.aspx/support/warranty.
Notes, Cautions, and Warnings Symbols
A NOTE symbol indicates important information that helps you make better use of your hardware or
software.
A CAUTION symbol indicates potential damage to hardware or loss of data if instructions are not
followed.
A WARNING symbol indicates a potential for property damage, personal injury, or death.

1
1 Getting Started
This section provides information to help you get started with installing your PS-M4110 blade storage array in a
Dell PowerEdge M1000e Blade Enclosure. Please review this section before beginning the installation.
An example of a fully-populated Dell PowerEdge M1000e Blade Enclosure is shown in Figure 1. It contains four
PS-M4110 blade storage arrays, two single-wide full-height servers, and four single-wide half-height servers.
Figure 1: Fully-populated Dell PowerEdge M1000e Blade Enclosure

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Chapter 1 Getting Started
Before You Begin
Before beginning to install the PS-M4110 array, do the following:
• Read the installation safety precautions. See Installation Safety Precautions on page 2.
• Read the precautions about handling the array. See Handling the Array on page 2.
• Read the information about protecting hardware. See Protecting Hardware on page 3.
• Make sure the array and installation location meet the environmental requirements. See Environmental
Requirements on page 4.
• Make sure that network requirements are met. See Array Networking Considerations on page 6.
• Unpack the array and make sure you have all the necessary parts. See Shipping Box Contents on page 4.
• Familiarize yourself with the overall installation procedure. See Overview of Array Installation and Setup on
page 11.
Installation Safety Precautions
When you install the array, follow these safety precautions:
• Dell recommends that only individuals with the proper experience install the PS-M4110 blade storage array
in an PowerEdge M1000e Blade Enclosure.
• Leave the array in its static-protective packaging until you are ready to install it into the enclosure.
• When handling the array, use an electrostatic wrist guard or a similar form of electrostatic protection.
• Be careful when lifting the PS-M4110 array from the shipping box, or whenever moving it. The array has an
inner drawer (containing the drives and control modules) that can accidentally slide out of the array enclo-
sure if it is not locked closed. Before moving the array, always check to assure that the warning message
Drawer Unlatched is not visible on the top lip of the array's drawer front. See Handling the Array on page
2.
• When shipped by itself, the PS-M4110 includes a retaining clip on the front to prevent the array drawer from
sliding out of its enclosure. Before lifting the array from the shipping box, be sure that the retaining clip is
attached.
Handling the Array
Be careful when handling the PS-M4110 blade storage array. The PS-M4110 array has an outer shell that houses
an inner drawer (containing the array drives and control modules). The inner drawer can accidentally slide out of
the outer shell if it is not closed.

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Protecting Hardware
Warning: If the inner drawer slides open unexpectedly, the sudden weight shift of the heavy inner drawer
could cause the array to fall off the surface it is resting on, or to be dropped by a person holding it. Damage to
the array, or injury to yourself or nearby people, could result.
Before handling a PS-M4110 blade storage array, always check that the array inner drawer is securely closed.
A warning symbol and message that indicates that the drawer is open is printed on the front top edge of the inner
drawer. This message is visible only if the inner drawer is open. Check to make sure that this message is not
visible before handling the array. See Figure 2.
Figure 2: Drawer Open Indication
Protecting Hardware
Protect the PS-M4110 blade storage array from electrostatic discharge at all times.
• When handling array hardware, make sure you use an electrostatic wrist strap or a similar form of pro-
tection. Connect the strap securely to yourself (not clothes) and securely to ground.
• Examples of an appropriate ground are a properly-grounded ESD mat or the metal frame of a grounded piece
of equipment.
• If transporting the array, use the static-protective packaging that the array was shipped in, if possible.

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Chapter 1 Getting Started
Shipping Box Contents
The PS-M4110 blade storage array may be shipped in one of several ways:
• As a separate unit - consists of a single PS-M4110blade storage array, with drives and controllers pre-
installed in the array drawer.
• Pre-installed in an M1000e enclosure - consists of one to four PS-M4110 blade storage arrays, with drives
and controllers pre-installed in the array drawer.
• Pre-installed in a rack (within a M1000e enclosure) - consists of rack of one or more pre-installed M1000e
enclosures with pre-installed PS-M4110 blade storage arrays.
Depending upon the configuration purchased, the PS-M4110 array consists of:
– Either one or two control modules. If only one control module is present, a blank is present in the other
control module slot, and must not be removed.
– Fourteen 2.5 inch drives, which are all SAS, all Nearline SAS, or a hybrid configuration of five SSD and
nine SAS drives.
In either case, you should receive all the items described in Table 1.
Table 1: Items Shipped with the PS-M4110 Array
Item
Description
PS Series Array
Depending upon the configuration purchased, the PS-M4110 array consists of:
• Either two control modules, or one control module and one blank.
• Fourteen 2.5 inch drives, which are either SAS, Nearline SAS, or a com-
bination of SSD and SAS drives.
Note: When shipped by itself, the PS-M4110 includes a retaining clip on the front to
prevent the array drawer from sliding out of the enclosure. It also includes pro-
tective plastic covers on the back to protect the rear connectors. You must
remove the retaining clip and protective covers before installing the array in the
M1000e enclosure.
Serial cables(s)
One serial cable is provided for each control module.
Use the cable to connect to a host computer for setup or management, and when a
network connection is not available.
Serial port covers
One for each serial port.
Documentation
This Installation Guide
License, regulatory, and warranty documents.
Environmental Requirements
The array requires that the installation location meet certain environmental requirements. Since the array is
installed within an M1000e enclosure, the enclosure installation requirements fulfill the array's requirements. In
general:

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Environmental Requirements
• Make sure there is sufficient space for air flow in front of, and behind, the M1000e chassis where the array
is installed.
• Make sure the room where the M1000e enclosure is located is properly vented.
Refer to the PowerEdge M1000e Blade Enclosure documentation for full environmental requirements.
Review the technical specifications section in Technical Specifications on page 60 for PS-M4110 environmental
requirements.

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Chapter 1 Getting Started
Array Networking Considerations
This section provides requirements and recommendations for PS-M4110 array networking in the M1000e
enclosure.
The PS-M4110 array uses a single 10Gb/s Ethernet port (Ethernet 0 (iSCSI)) for communication on one of two
redundant fabrics (designated A and B). The default is fabric B. A 10GBASE-KR IO module (IOM) is required.
• Fabric A is a redundant Ethernet fabric that supports IO module slots A1 and A2. The PS-M4110 requires
10Gb/s Ethernet IO modules in A1 and A2. The M1000e must have a Version 1.1 midplane for use with Fab-
ric A.
Note: If the M1000e has a Version 1.0 midplane, 10 Gb/s Ethernet IO modules are not supported on Fabric
A and the PS-M4110 will not be able to connect to it.
• Fabric B is a redundant Ethernet fabric, supporting IO module slots B1 and B2. Fabric B supports 1 or 10
Gigabit Ethernet.
Optionally, Ethernet port 1 on the PS-M4110 array can be set up as a management port, and be accessed through
the CMC. See Setting up a Dedicated Management Port on page 46.
Details about network requirements and recommendations are provided in the following sections. See Network
Requirements on page 6, Network Recommendations on page 8 and Optional Considerations on page 9.
General network, and network configuration of the M1000e, is beyond the scope of this manual. Refer to the
Dell PowerEdge M1000e Enclosure Owner's Manual and Dell PowerEdge Configuration Guide for this
information. Also, refer to the associated Dell IO module documentation.
You can access additional documentation on the Dell support site (support.dell.com). See the Preface on page v
for information about accessing the Dell support site.
In addition, you can contact your technical support provider for help and information, as described in the Preface
on page v.
Network Requirements
• Switched 10Gb Ethernet Network
When the PS-M4110 is installed in a M1000e chassis that has the proper Mr-Series IO Modules (KR-based
blade network switches) or pass-throughs installed, all network connections are 10GbE. The IO modules on
the fabric to which the PS-M4110 is connected must be KR-based 10GbE.
• Interconnect All SAN Switches

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Network Requirements
For increased availability, the Ethernet ports on both PS-M4110 control modules are automatically connected
to each redundant M1000e IO module (IOM) of the configured fabric. (Assuming that both IO modules are
installed.) One port is active and one port is passive.
For example, if a PS-M4110 is configured for Fabric B, and both the B1 IOM and B2 IOM are installed, the
Ethernet ports from each control module are connected to both B1 and B2 IOMs. This provides a total of
four potential Ethernet paths. However, only one Ethernet path is active at any given time.
In the above example, if the B1 IO module fails, both active and passive PS-M4110 ports will automatically
failover to the B2 IO module.
See Figure 3 for an illustration of the above example, showing how the PS-M4110 control modules and
M1000e fabric IOMs are connected.
Figure 3: Example of Default Fabric B Network Paths
Active 10G path
Network path failover
Passive control module standby network paths
External stack or LAG connection
• Stack Switches Together
When using a PS-M4110 inside an M1000e enclosure, the IO modules must be interconnected (stacked or
LAGged together).
For example, if fabric B is configured, the B1 and B2 IOMs must be stacked or LAGged together. The redun-
dant fabric IO modules must be connected using inter-switch links (stack interfaces or link aggregation
groups (LAG)). The links must have sufficient bandwidth to handle the iSCSI traffic.

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Chapter 1 Getting Started
For ease of management, Dell recommends using stacking configurations wherever possible. Use the Equal-
Logic Group Manager GUI or CLI to assign an IP address and netmask to each interface.
Figure 3 shows an example of stacking B1 and B2 IO modules.
• Configure Access to Group IP Address
If a PS-M4110 connects with storage arrays that are outside of the M1000e chassis (external arrays), the net-
work must be configured so that the PS-M4110 has access to the group IP address used by the external
arrays. All of the arrays in the group must be in the same (layer 3) subnet.
Network Recommendations
• Provide Redundant Network Paths Between Hosts and Arrays
Use a multipathing solution to make sure that no single point of failure exists between hosts and arrays.
Dell recommends using the Dell EqualLogic Host Integration Tools (HIT) solution, available for Microsoft,
VMware and Linux platforms.
• Provide Adequately-Sized Reliable Network Link (for replication)
When replicating with groups outside of the M1000e chassis, for effective and predictable replication, make
sure that the network link between the primary and secondary groups is reliable and provides sufficient band-
width for copying the required amount of data within the required time.
• Disable STP Functionality on Switch Ports that Connect End Nodes
If possible, do not use Spanning-Tree Protocol (STP) on switch ports that connect directly to iSCSI end
nodes (iSCSI initiators or array network interfaces).
However, if you must use STP or RSTP (preferable to STP), you should enable the port settings (available
on some switches) that let the port transition faster into STP forwarding state upon link-up (i.e. portfast).
This functionality can reduce network interruptions that occur when devices restart, and it should only be ena-
bled on switch ports that connect end nodes.
Some iSCSI BOOT Initiators may not startup reliably when STP is enabled, due to the convergence time.
For further information, refer to the associated specifications for your NIC and Switch.
You can use Spanning-Tree for a single-cable connection between switches, and you can use Link Aggre-
gation Groups (LAG) (or port-channels) for multi-cable connections between switches.
• Enable Flow Control on Switches and NICs
Enable Flow Control on each switch port and NIC that handles iSCSI traffic. PS Series arrays will respond
correctly to Flow Control.
• Disable Unicast Storm Control on Switches

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Optional Considerations
Disable unicast storm control on each switch that handles iSCSI traffic if the switch provides this feature.
However, the use of broadcast and multicast storm control is encouraged on switches.
• Enable Jumbo Frames
Enable Jumbo Frames on each switch and each NIC that handles iSCSI traffic.
PS series arrays support Jumbo Frames, which is enabled by default (MTU 9000). Enable Jumbo Frames on
each switch and iSCSI initiator (NIC) to take advantage of this feature. For further information, refer to the
associated documentation for your switch and NIC.
Optional Considerations
• Management Network
Optionally, Ethernet 1 on the PS-M4110 array can be set up for a management port and be accessed through
the CMC to keep management traffic separate from iSCSI traffic.
You can do this by using the Dell Chassis Management Console command line interface (CLI), or the Equal-
Logic Group Manager GUI or CLI. See Setting up a Dedicated Management Port on page 46.

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Chapter 1 Getting Started

11
2 Overview of Array Installation andSetup
To set up and start using your PS-M4110 storage blade array, follow the detailed procedures associated with
each of these steps:
1. Install the PS-M4110 array hardware in an PowerEdge M1000e Blade Enclosure. Hardware installation is
described in Chapter 3, Installing an Array on page 13.
2. Set up the array. Array configuration is described in Chapter 4, Configuring the Array on page 25. The tasks
are:
– Configure the array.
– Make the array accessible on the network.
– Configure RAID.
– Create a group with the array as the first group member or add the array to an existing group. When you
expand a group, capacity and performance increase automatically.
3. Start using the SAN. Allocate group storage space to users and applications by creating volumes. A volume
appears on the network as an iSCSI target. Use a computer’s iSCSI initiator to connect to a volume. Once
you connect to a volume, it appears as a disk on the computer. Array storage setup is described in Chapter 5,
Allocating Storage on page 49.
4. After completing the above steps, you can customize the group and use its more advanced features. This is
described in Chapter 6, After Setting Up a Group on page 55.

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Chapter 2 Overview of Array Installation and Setup

13
3 Installing an Array
The PS-M4110 storage blade array can operate only when properly installed in a Dell PowerEdge PowerEdge
M1000e Blade Enclosure. The M1000e chassis provides power and network connectivity for the PS-M4110
array.
The PowerEdge M1000e Blade Enclosure has 16 single-wide half-height slots.
The PS-M4110 storage blade array is double-wide and half-height.
You can install up to four PS-M4110 blade arrays (shown in Figure 4) in a PowerEdge M1000e Blade Enclosure
(shown in Figure 5). Arrays can be installed in any available top or bottom slots in the M1000e chassis.
Figure 4: PS-M4110 Blade Storage Array

Dell EqualLogic PS-M4110 Installation Guide
Chapter 3 Installing an Array
14
Figure 5: PowerEdge M1000e Chassis
Pre-Installation Notes
Before installing the PS-M4110 in an M1000e chassis, note the following:
• You should wear an electrostatic strap to prevent electrostatic damage. See Protecting Hardware on page 3.
• When shipped by itself, the PS-M4110 includes a retaining clip on the front to prevent the array drawer from
sliding out of the array. It also includes protective plastic covers on the back to protect the rear connectors
from damage. You must remove the retaining clip and protective covers before installing the array in the
M1000e chassis. Optionally, you can also remove the protective caps covering the serial ports on the front.
Save the clip and protective covers for future use.