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Dell PowerVault MD3460 Series Storage Arrays Deployment 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.
Contents 1 Introduction........................................................................................................... 5 System Requirements ..................................................................................................
6 Load Balancing.................................................................................................... 27 Load Balance Policy ...............................................................................................................
1 Introduction This guide provides information about deploying Dell PowerVault MD3460 storage arrays. The deployment process includes: • Hardware installation • Modular Disk Storage Manager (MD St.
• Host server — On a host server system, MD Storage Manager and the storage array communicate management requests and event information using in-band or out-of-band connections.
Contacting Dell NOTE: If you do not have an active Internet connection, you can find the contact information on your purchase invoice, packing slip, bill, or Dell product catalog. Dell provides several online and telephone-based support and service options.
2 Hardware Installation Before using this guide, ensure that you review the instructions in the: • Dell PowerVault MD3460/MD3860i/MD3860f Storage Arrays Getting Started Guide — The Getting Started Guide that is shipped with the storage array provides information to configure the initial setup of the system.
Each PowerVault MD3460 storage array can be expanded to a maximum of 120 (or 180, if enabled using Premium Feature activation) physical disks through a maximum of two MD3060e series expansion enclosures.
Figure 1. Two Hosts Connected to Two Controllers 10.
Figure 2. Four Hosts Connected to Two Controllers 11.
Figure 3. Four Hosts Connected to Two Controllers The following figure shows eight hosts, each connected to only one RAID controller module. This configuration allows the maximum number of hosts that may be connected, but provides no redundancy.
Figure 4. Eight Hosts Connected to Two Controllers The following figures show up to four cluster nodes connected to two RAID controller modules. Since each cluster node has redundant paths, loss of a single path would still allow access to the storage array through the alternate path.
Figure 5. Four Cluster Nodes Connected to Two Controllers 14.
Figure 6. Four Cluster Nodes Connected to Two Controllers Cabling PowerVault MD3060e Expansion Enclosures You can expand the capacity of your PowerVault MD3460 Series storage array by adding PowerVault MD3060e expansion enclosures.
MD3060e Expansion cabling diagrams Figure 7. Single Expansion cabling diagram 16.
Figure 8. Dual expansion cabling diagram Expanding With New PowerVault MD3060e Expansion Enclosures NOTE: Hot plug of MD3060e expansion enclosure is not recommended. Power on all MD3060e expansion enclosures before you power on the array enclosure. For helpful videos and other resources on PowerVault MD series, see dell.
For more information, see the Support Matrix at dell.com/powervaultmanuals . 2. Install the software and driver package included on the PowerVault MD Series resource media. For information about installing the software, see Installing MD Storage Manager .
3 Installing MD Storage Manager The PowerVault MD Series resource media contains software and drivers for both Linux and Microsoft Windows operating systems. The root of the media contains a readme.txt file describing changes to the software, updates, fixes, patches, and other important data applicable to both Linux and Windows operating systems.
The PowerVault MD Series resource media offers the following installation methods: • Graphical Installation (Recommended) — This is the recommended installation procedure. The installer presents a graphical wizard-driven interface that allows customization of components installed.
8. Start MD Storage Manager and discover the array(s). NOTE: If Dynamic Host Configuration Protocol (DHCP) is not used on the network where the PowerVault MD storage array’s management ports are connected, it is recommended that you enable IPv6 on the management station to discover the storage array(s).
NOTE: On Red Hat Enterprise Linux 6 operating systems, run the following script from the root directory to install prerequisite packages: # md_prereq_install.sh 1. Copy the custom_silent.properties file in the /linux directory of the installation media or image to a writable location on the host server.
4 Post Installation Tasks Before using the Dell PowerVault storage array for the first time, complete these initial configuration tasks in the order shown.
• To add an array, in the EMW, select Automatic Discovery . NOTE: You can also add an array in the EMW using its known management ports IP addresses. Initial Setup Tasks 1. The name of the first storage array found is displayed in the Devices tab of the EMW.
5 Uninstalling MD Storage Manager Uninstalling MD Storage Manager From Windows To uninstall the Modular Disk Storage Manager from Microsoft Windows Server: 1. Double-click Add or Remove Programs from the Control Panel . 2. Select Dell MD Storage Software from the list of programs.
Uninstalling MD Storage Manager From Linux By default, PowerVault MD Storage Manager is installed in the /opt/dell/mdstoragemanager directory. If another directory was used during installation, navigate to that directory before beginning the uninstallation procedure.
6 Load Balancing Load Balance Policy Multi-path drivers select the I/O path to a virtual disk through a specific RAID controller module. When the multi-path driver receives a new I/O to process, the driver tries to find a path to the current RAID controller module that owns the virtual disk.
If more than one data path to the virtual disk has the same weight value, the round robin with subset path selection policy is used to route I/O requests between the paths with the same weight value. The least path weight load balance policy is not supported on Linux operating systems.
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