Dell PowerVault DX6104 User manual

Dell DX Object Storage Platform
User’s Guide

Notes, Cautions, and Warnings
NOTE: A NOTE indicates important information that helps you make better use of your computer.
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the
problem.
WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
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2013 - 03
Rev. A04

Contents
Notes, Cautions, and Warnings...................................................................................................2
1 Introduction..................................................................................................................................5
2 DX Object Storage Platform Overview....................................................................................7
Network Topologies..................................................................................................................................................7
Local Cluster Configuration................................................................................................................................8
Redundant DX Cluster Services Nodes..............................................................................................................9
Subcluster Configuration.................................................................................................................................10
Remote Cluster Configuration..........................................................................................................................11
Application Access To DX Object Storage Platform..............................................................................................12
Communicating Directly With A Local Cluster.................................................................................................12
Communicating Directly With A Remote Cluster.............................................................................................13
3 Setting Up The DX Object Storage Platform.........................................................................15
Installing The Initial Cluster Or Redundant Cluster Services Node........................................................................15
Configuring The DX Object Storage Platform.........................................................................................................15
DX Content Router Rules Configurator...................................................................................................................16
Using The Dell DX Content Router Rules Configurator....................................................................................16
Troubleshooting The Dell DX Content Router Rules Configurator (CRRC).......................................................17
Adding Additional DX Storage Nodes.....................................................................................................................17
Installing The System In A Rack.......................................................................................................................18
Cabling The Appliance.....................................................................................................................................18
Turning On The DX Storage Node....................................................................................................................18
Enabling Capacity In DX Cluster Services Console..........................................................................................18
Adding Network Adapter To DX Storage Nodes..............................................................................................18
Adding Network Adapters To DX Cluster Services Nodes .............................................................................19
4 Updating The Dell DX Object Storage Platform Software..................................................21
Updating The System Software On The CSN..........................................................................................................21
Downloading The Update Manager Payload...................................................................................................21
Executing Updates...........................................................................................................................................21
Receiving System Software Update Notifications...........................................................................................22
Downgrading A Payload...................................................................................................................................22
Troubleshooting Update Failures.....................................................................................................................22
Repairing The Installed System Software........................................................................................................22
Validating The System Software On The CSN........................................................................................................23

5 Upgrading Or Re-installing The DX System Using The Dell Restore Manager...............25
Introduction To The Dell Restore Manager ...........................................................................................................25
Restore Manager Operating Modes.......................................................................................................................25
System Recovery Mode...................................................................................................................................25
Factory Reset Mode.........................................................................................................................................25
Downloading The Restore Manager Application...................................................................................................26
Creating A Bootable USB Disk................................................................................................................................26
Creating A Restore Manger USB Drive On Microsoft Windows Systems.......................................................26
Creating A Restore Manger USB Drive On Linux Or Unix Systems..................................................................27
Executing The Restore Manager......................................................................................................................27
Upgrading From DX 2.x To DX 3.1 Using Restore Manager....................................................................................28
Preparing To Upgrade From DX 2.x To DX 3.1..................................................................................................28
Reconfiguring The CSN....................................................................................................................................29
Restoring The Backup Manifest UUID.............................................................................................................29
Restoring The DXM Configuration...................................................................................................................30
Restoring The DX Content Router Rules Configurator.....................................................................................30
6 Disaster Recovery.....................................................................................................................31
Recovery Solution Map..........................................................................................................................................31
Recovering From Disk Failures...............................................................................................................................31
Single Disk Failure............................................................................................................................................31
Two Disk Failure...............................................................................................................................................32
Detecting And Monitoring Disk Failures.................................................................................................................32
Storage Node Hard Drive LED Behavior.................................................................................................................32
Reinstalling The Operating System.........................................................................................................................32
7 Additional References..............................................................................................................33
Software Documents..............................................................................................................................................33
Hardware Documents.............................................................................................................................................33
Systems Management Documents.........................................................................................................................34
8 Appendix A—Upgrading DX System Software From Version 1 To Version 2.................35
Guidelines...............................................................................................................................................................35
Upgrading RHEL 5.3 To RHEL 5.5.............................................................................................................................35
Upgrading DX Software From Version 1.0 To Version 2.x ......................................................................................36
9 Appendix B—Hard Drive Hot Plug User Interface Issue...................................................37
10 Getting Help..............................................................................................................................39
Contacting Dell.......................................................................................................................................................39
Documentation Feedback.......................................................................................................................................39

1
Introduction
The Dell DX Object Storage Platform provides a simple and cost effective pool of storage for files whose content do not
change often. The object storage platform allows you to:
• Expand capacity to meet rapidly changing needs without disrupting services.
• Set policies for file retention and replication.
• Distribute information to multiple geographic locations.
• Integrate through an HTTP based interface.
The DX Object Storage Platform includes the following hardware and software:
• Up to two Dell DX6 nnn Cluster Services Node:
– DX6000 (the 11th generation server CSN model)
– DX6104-CSN (the 12th generation server CSN model)
• Three or more Dell DX6 nnn Object Storage Nodes:
– DX6004S, DX6012S (the 11th generation server SN models)
– DX6104-SN, DX6112-SN (the 12th generation server SN models)
• A pre-installed operating system and Dell OpenManage software on the DX Cluster Services Node.
• Dell DX Object Storage Platform software.
The following table lists the terms used in this document to refer to various components of the DX Object Storage
Platform.
Table 1. Terms Used in the Document
Component Description
DX Object Storage Cluster DX6000 or DX6104-CSN systems and DX6004S, DX6012S, DX6104-SN
or DX6112-SN systems.
DX Cluster Services Node, Cluster Services
Node (CSN)
DX6000 or DX6104-CSN server and software components.
DX Object Storage Node, DX Storage Node (SN) DX6004S, DX6012S, DX6104-SN or DX6112-SN servers and software
components.
DX Content Router Software component on the DX6000 or DX6104/6112 systems.
DX Object Storage Software Software components on the DX6000 or DX6104/6112 systems.
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2
DX Object Storage Platform Overview
Network Topologies
The Dell DX Object Storage Platform network consists of one or more DX Storage Clusters connected by DX Content
Router services through a network. There are many possible network topologies depending on the storage network
goals. All networks share the following features:
• Two or more (minimum three recommended) DX Cluster Services Nodes that provide services to the storage
cluster.
• Three or more DX Storage Nodes that provide data storage services.
• Ethernet switches to enable required services within a storage cluster (private network) and access to the
storage nodes from outside the cluster (public network).
• Services such as Domain Name System (DNS) and Dynamic Host Configuration Protocol (DHCP).
NOTE: DX Storage Cluster requires a dedicated internal network to ensure that the storage cluster traffic is
protected from unauthorized access. The dedicated network also ensures that the external or corporate network is
isolated from both the PXE boot server and cluster multicast traffic. Single networking is not supported.
The DX supports 1GbE and 10GbE network speeds. All network services required by the cluster are present in the DX
Cluster Services Node software bundle, and preinstalled on the Cluster Services Node. The DX Storage Cluster is
automatically configured with the defaults for all network parameters that must be sufficient for most simple
configurations. All network parameters can be set manually to support more complex configurations. For more
information about setting network parameters, see the DX Object Storage Getting Started Guide and the DX Object
Storage Advanced Administration Guide at dell.com/support/manuals.
Network switch configuration depends on both the network topology and the customer environment. To ensure proper
functioning with default network parameters and to maximize cluster performance, it is recommended that you follow
the best practices listed below, while configuring both the private and public network switches:
• Disable Link Aggregation Control Protocol (LACP) as the DX Object Storage Nodes bond the system NIC ports in
balanced-alb modes.
• Disable jumbo frames.
• Disable spanning tree protocol, if the switches are not being trunked.
• Disable Flow Control.
• Disable IGMP snooping.
NOTE: If IGMP snooping must be enabled, there must also be an IGMP querier enabled in the same
network (broadcast domain).
NOTE: If switches are trunked, enable spanning tree protocol and port fast on the data intensive ports.
NOTE: Use of jumbo frames is not recommended. Though they are supported, changes are required to both the DX
system and the network switches.
Contact Dell to customize the network configurations to meet the solution requirements. For more information about
configuring the network for the Dell DX Object Storage Platform, see “Network Topology” in the DX Object Storage
Advanced Administration Guide at dell.com/support/manuals.
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Local Cluster Configuration
A basic Dell DX Storage Cluster consists of at least two (three recommended) DX Cluster Services Nodes and at least
two (three recommended) DX Storage Nodes, along with the necessary Ethernet infrastructure to connect them.
Within a cluster, DX Storage Nodes communicate with each other through User Datagram Protocol (UDP) and IP
multicast. All nodes within a cluster must be on the same IP subnet. The DX Cluster Services Node also participates in
UDP and multicast communication and must be located within the same subnet.
The Layer 3 switch (IP router) used to create the storage cluster subnet must:
• Restrict UDP and multicast network to the cluster subnet
• Pass TCP (HTTP) traffic to and from the DX Cluster Services Node and DX Storage Nodes
NOTE: A load-balancer in front of the storage cluster is not required. The applications communicate directly with
the DX Object Storage Platform through HTTP.
It is recommended that you configure the network topology to enable applications to communicate with the DX Storage
Nodes on private and secure networks. This is the primary method to store and retrieve data from a local DX Storage
Cluster.
NOTE: If applications write to a cluster through an unsecure network, then to prevent malicious activity, it is
recommended that you allow the application to encrypt the data before writing the data to the cluster.
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Figure 1. Local Cluster Configuration
Redundant DX Cluster Services Nodes
The Dell DX Storage Cluster supports redundant DX Cluster Services Nodes. In a redundant model, the active DX Cluster
Services Node is configured as the primary node and the redundant node is configured as the secondary node.
The primary Cluster Services Node contains the cluster configuration files, active networking utilities, and active
content router services. A manual failover process is required if the primary DX Cluster Services Node fails to promote
the secondary DX Cluster Services Node. For more information, see the “Failover” section of the Cluster Services Node
(CSN) Installation and Configuration Guide at dell.com/support/manuals. Since there is a combined virtual IP address for
the primary DX Cluster Services Node, a failover to a redundant DX Cluster Services Node is transparent to all
applications. When a failover is transparent, an IP address change is not required. However, the application services
remain unavailable until the manual failover of the Cluster Services Node is complete.
NOTE: After a secondary CSN has been promoted to active (primary), it remains as the primary, and the original
primary CSN must be configured as the secondary.
For more information, see the Cluster Services Installation and Configuration Guide at dell.com/support/manuals.
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Figure 2. Redundant DX Cluster Services Nodes
Subcluster Configuration
A Dell DX Storage Cluster can be split into two or more subclusters. The subclusters are physically part of the same
cluster but are recognized as logically separate entities by the DX Object Storage software that provides local area
replication.
A subcluster can be:
• A set of nodes within one physical group (such as building, floor, wing, and so on)
• An environmental group (such as rack, network switch, and power circuit)
• Any other defined groups
NOTE: If the building or power circuit fails, other nodes have an optimal set of data replicas.
All DX Storage Nodes within the DX Storage Cluster have the same network connectivity requirements. The DX Storage
Nodes must be in the same IP subnet, must be able to participate in multicast and UDP traffic, and so on. Clients may
address DX Storage Nodes within any subcluster and are redirected to the proper DX Storage Node. As a result,
application awareness of a subcluster configuration is not required.
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For more information about subclusters, see "Local Area Replication" in the DX Object Storage Advanced Administration
Guide at dell.com/support/manuals.
Figure 3. Subcluster Configuration
Remote Cluster Configuration
When you deploy multiple DX Storage Clusters (for example, multiple sites, offsite backup, and so on), the DX Cluster
Services Node provides the ability to replicate data between DX Storage Clusters using the DX Content Router software.
The DX Content Router provides two services:
• Publisher service
• Replicator service
Clusters are connected by one cluster's replicator service to another cluster's publisher service. This link can either be
one-way (for offsite backup) or two-way (for mirrored configurations).
Each publisher can support a number of replicators with a specific set of replication rules. The publisher does not
provide the same set of data objects to each replicator.
For redundancy, more than one DX Cluster Services Node may be present in a cluster, but only one DX Cluster Services
Node can be active as a publisher at any time.
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NOTE: There can be multiple publishers per cluster, but only the active (or primary) Cluster Services Node can be
the active subscriber.
Clusters may be connected by any type of link that can handle the desired traffic volume. This link must be secured to
prevent reading cluster data being passed between clusters.
Cluster data is passed directly between the two DX Cluster Services Nodes.
NOTE: It is not recommended to have direct communication between storage nodes in remote clusters. However,
for high throughput and high availability applications, system administrators who are well versed with managing
RHEL or CentOS systems and who are familiar with IP networking concepts, can directly route to the storage
network.
For more information about multiple cluster configurations, see the Content Router Setup and Configuration Guide at
dell.com/support/manuals.
For more information about direct routing between CSN Storage Networks, see the Caringo TechNote2011001 at
support.caringo.com.
Figure 4. Multiple Cluster Configuration
Application Access To DX Object Storage Platform
Communicating Directly With A Local Cluster
Applications can communicate with a DX Storage Node at any time. The DX Object Storage software automatically
redirects applications to the proper node even if the addressed node is an incorrect node to handle a request. If both
Cluster Services Node and cluster nodes are not responding, you can communicate with the remote cluster by
addressing the remote Cluster Storage Nodes or remote Cluster Services Node directly through the Administrator
Console and the appropriate IP address (for example: http://192.168.3.200:90).
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For many configurations, it is recommended that you create a single name using DNS which maps to the DX Storage
Nodes. A single name allows communication with the DX Storage Nodes using one domain name. DNS automatically
rotates addressing through the storage nodes. For more information, see the DX Object Storage Application Guide at
dell.com/support/manuals.
Communicating Directly With A Remote Cluster
Applications may communicate with a remote DX Storage Cluster during local-cluster disaster recovery. For an
application to communicate to a remote DX Storage Cluster, the DX Cluster Services Node on the remote public network
must be addressed. A proxy server on the DX Cluster Services Node (on the local cluster) accepts HTTP requests from
the application and forwards them to a DX Storage Node in the DX Storage Cluster. The DX Storage Node redirects the
requests if necessary, and returns the response back to the requester.
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3
Setting Up The DX Object Storage Platform
Installing The Initial Cluster Or Redundant Cluster Services Node
The Dell DX Object Storage Platform consists of at least one DX Cluster Services Node and three (or more) DX Storage
Nodes.
CAUTION: Installation of the initial cluster or additional Cluster Services Nodes requires deployment services from
Dell.
For information about setting up the hardware, see the documentation for the DX models at dell.com/support/manuals.
Configuring The DX Object Storage Platform
Dell DX Object Storage Platform includes a Cluster Services Node to enable a centralized management interface for the
DX Cluster. Default settings are defined and recommended for system operation. However, there are a number of
options which may be used to configure the storage platform. These include:
• Reset administrator password for the DX Cluster Services console
• Default object replication parameters
• Port number for management console and other services
• IP parameters
• Logging options
• Simple Network Management Protocol (SNMP) options
• Setting persistent cluster settings
• Storing configuration files
For more information about these options, see the Cluster Services Node Installation and Configuration Guide at
dell.com/support/manuals.
NOTE: Use the Cluster Services Console for normal management and configuration. Only experienced
administrators must use the configuration files for advanced configurations, described in the DX Object Storage
Advanced Administration Guide and the DX Object Storage Content Router Setup and Configuration Guide . Contact
your account team for professional services consulting on advanced configurations.
DX Content Router services are not automatically configured. To enable replication to remote clusters, publisher, and
subscriber services, DX Content Router services must be configured through the DX Cluster Services console. For
information about configuring DX Content Router services, see the Cluster Services Installation and Configuration Guide
at dell.com/support/manuals.
For a complete list of reference documents, see Additional References.
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DX Content Router Rules Configurator
The DX Content Router Rules Configurator (CRRC) is a Java based application that helps you configure the rules used by
the Publisher Service running on the DX Content Router. CRRC allows you to manage XML-based rule sets without
requiring XML-specific knowledge.
Using The Dell DX Content Router Rules Configurator
The CRRC runs on a DX Cluster Services Node (CSN) in a DX Storage cluster. It configures the rules.xml file located
at /etc/caringo/contentrouter/rules.xml. For more information on the rule sets, see the Content Router Setup and
Configuration Guide at dell.com/support/manuals.
To configure the DX content router rules using the CRRC:
1. Start the CRRC, by running the command at the installation path (/opt/dell/crrc): ./run_crrc.sh
The Home screen is displayed.
2. In the Home screen, select the type of rule set that you want the content router to use.
3. Select an option from a list of pre-defined rule sets: Create a Custom rule set or Modify current rule set and click
Next.
The Editor screen is displayed. You can view the Main tab and XML tab on the Editor screen. On the Main tab, you
can:
– Add Group
– Add Channel
– Add filter
– Delete
– Set OR condition
– Reset
– Modify existing filter node
NOTE: If you select Modify current rule set, proceed to step 4.
4. To modify an existing Filter node, select the relevant filter node.
The Filter editor frame displays the selected filter node details.
5. In Filter a stream by header or lifepoint?, select header to filter the stream by its header, or select lifepoint to filter
the stream by its lifepoint.
6. In Select a filtering criterion, select:
–Filter if header or lifepoint exists
–Filter if header or lifepoint does not exist
–Filter if header or lifepoint meets a criterion
7. In Select a type of header or lifepoint, select the appropriate option for each header and lifepoint, or choose
Custom… and in the Enter custom value field, enter the relevant value.
8. If you select, Filter if header or lifepoint meets a criterion in step 6, the Insert Criterion button in Add Filtering
criterion is activated.
9. You can write a Boolean expression containing criteria. To generate the entered criteria, click Insert criterion.
The Add a Criterion dialog box is displayed. It allows you to add a criteria based on the following filter types:
–Filter based on date and duration of header or lifepoint
–Filter based on value of header or lifepoint
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–Filter if header or lifepoint contains a string
–Filter if header or lifepoint matches a string
10. To add the selected criterion, click Add.
To add the inverted logic of the selected criterion, click Add inverted.
For example, if you select to filter a stream that is older than date 01/01/2000 12:00:00 and click Add
Inverted, the criterion will be added as not olderThan ('Sat Jan 01 00:00:00 EST 2000'), with ‘not’ in the
beginning.
11. In the filter editor frame, click Apply, to apply the properties to the selected filter node.
12. In the Editor screen, click Save.
NOTE: When you save the selected rule set, CRRC creates a backup file of the current rules.xml at /etc/
caringo/contentrouter/. The backup file is named using a prefix of rules and the current date/time using the
format MMddyyyy_HHmmss where dd=day, MM=month, yyyy=year, HH=hour, mm= minute, ss=second (for
example, rules_10082011_123356.xml).
NOTE: If you select Modify current rule set in the Home screen, the Validate button is displayed. To view the
Validation report, click Validate. The validation report generates a report of any errors or warnings in the rule
set in the rules.xml file. To save the validation report as a text file, click Save as text.
Troubleshooting The Dell DX Content Router Rules Configurator (CRRC)
If problems are experienced with the CRRC application, verify the following:
• Ensure that the rpm is correctly installed. Run the # rpm -q -a|grep crrc command to determine the
current version of the package name. The current version of the package must be 1.0.0 or higher.
NOTE: The RPM Package Manager (rpm) is a command line driven package management system used in
many Linux distributions, such as Red Hat Enterprise Linux, SUSE Linux Enterprise, and CentOS.
• Ensure that the JAVA_HOME environment variable is set to the correct path by running the echo $JAVA_HOME
command. The path needs to be set to the correct JRE or JDK installation directory (for example, /opt/dell/crrc/
jre1.6.0_25). Do not use a forward slash at the end of the navigation path.
• If you log out of a Linux system, JAVA_HOME will be reset. Ensure that JAVA_HOME is set to the correct JRE or
JDK installation directory after logging on (for example, /opt/dell/crrc/jre1.6.0_25).
• If the CRRC application is not starting, ensure that the:
–war-rules.dtd exists at /etc/caringo/contentrouter
–rules.xml file content is properly formatted (for example, there are no missing tags).
• Restart the Content Router Publisher Service by running the following command:
/etc/init.d/cr-publisher restart
If the problem persists, see Contacting Dell.
Adding Additional DX Storage Nodes
Before setting up the DX Storage Node, locate the Getting Started Guide shipped with your Dell DX6004S, DX6012S,
DX6104-SN, or DX6112-SN system. Unpack and set up the DX platform hardware.
To set up the DX Storage Node hardware:
1. Rack and cable the DX Storage system.
2. Turn on the Storage Node.
3. Enable capacity in the DX Cluster Services console.
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NOTE: The DX Storage Node is preconfigured to network boot from the DX Cluster Services Node. The
network ports must be connected to the private network before the system is turned on.
Installing The System In A Rack
If the DX system includes a rail kit, locate the Rack Installation Instructions supplied with the rail kit. Follow the
instructions to install the rails in the rack unit and to install the DX system in the rack.
Cabling The Appliance
Locate the Getting Started Guide that shipped with your system and follow the instructions to attach the power and
network cables to the DX system. Connect the network ports to the cluster's private network on the same IP subnet as
the other storage nodes. The DX Storage Node is preconfigured to network boot from the DX Cluster Services Node and
the NIC ports are preconfigured in balanced-alb modes.
Turning On The DX Storage Node
After cabling the storage node, turn it on, and verify that the network boot is successful.
NOTE: If the network boot is not successful, verify that the cables are correctly connected to the private network.
Enabling Capacity In DX Cluster Services Console
The DX Storage Cluster capacity is licensed. To expand the cluster capacity, you must purchase a capacity license. On
purchasing a capacity license, you receive a capacity license card that contains an activation code. Enter the activation
code in the DX Cluster Services console to enable the additional cluster capacity.
NOTE: The capacity is only applicable to the cluster in which it is entered.
To activate additional cluster capacity, follow the instructions in the Cluster Services Node Installation and
Configuration Guide .
Adding Network Adapter To DX Storage Nodes
You can add additional network adapters to the DX Storage Nodes to expand the network bandwidth to the storage
nodes.
To add additional network adapters:
1. Turn off the DX Storage Node.
2. To add a network adapter, follow the steps in the DX Storage Node's Owner's Manual at dell.com/support/manuals.
3. Connect the Ethernet ports to the private network.
See the figure in Adding Network Adapters to DX Cluster Services Nodes.
4. Turn on the DX Storage Node.
The DX Storage Node is automatically configured with all network ports bonded.
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Adding Network Adapters To DX Cluster Services Nodes
You can add additional network adapters to the DX Cluster Services Nodes to expand the network bandwidth on both
the private and public network.
NOTE: Console access to remote clusters is interrupted when the primary Cluster Services Node is offline. As long
as the Storage Nodes are running, the client can communicate with them through the private network.
NOTE: Do not promote a secondary Cluster Services Node to primary as it cannot be demoted back to secondary.
Demoting the original primary Cluster Services Node as a secondary Cluster Services Node requires re-imaging
the original primary Cluster Services Node. For more information, see the “Failover” section of the Cluster Services
Node (CSN) Installation and Configuration Guide at dell.com/support/manuals.
To add additional network adapters:
1. Turn off the DX Cluster Services Node.
2. To add a network adapter, follow the steps in the Dell DX6 a 00 system Hardware Owner's Manual at dell.com/
support/manuals.
3. Connect the Ethernet cable(s) for the external and internal network accordingly.
4. Turn on the DX Cluster Services Node.
5. Temporarily change the IP address of the external network interface to a new valid IP address from the Content
Services Configuration page of the DX Cluster Services Administration console. Then return the public network
interface IP address to its original value.
The first half of the Ethernet ports on the additional network adapter automatically bonds with the existing network
ports on the external network and the second half automatically bonds with the existing network ports on the
private network.
Figure 5. Ethernet Cable Connections to the Public and Private Networks
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