Dell PowerVault MD3420 - Manual (Page 6)

connection to a host server. The Ethernet connection passes management information between the
management station and the storage array connectivity.
Using MDSM, you can configure the physical disks in the storage array into logical components called
disk groups or dynamic disk group and then divide the disk groups into virtual disks. Disk groups are
created in the unconfigured capacity of a storage array. Virtual disks are created in the free capacity of a
disk group.
Unconfigured capacity comprises physical disks not already assigned to a disk group. When a virtual disk
is created using unconfigured capacity, a disk group or dynamic disk group is automatically created. If the
only virtual disk in a disk group is deleted, the disk group is also deleted. Free capacity is space in a disk
group that is not assigned to any virtual disk.
Data is written to the physical disks in the storage array using RAID technology. RAID levels define how
data is written to physical disks. Different RAID levels offer different levels of accessibility, redundancy,
and capacity. You can set a specified RAID level for each disk group and virtual disk on your storage array.
For more information about using RAID and managing data in your storage solution, see the Owner’s
Manual at dell.com/support/manuals.
Related Documentation
NOTE: For all PowerVault documentation, go to dell.com/powervaultmanuals and enter the
system Service Tag to get your system documentation.
NOTE: For all Dell OpenManage documents, go to dell.com/openmanagemanuals.
NOTE: For all storage controller documents, go to dell.com/storagecontrollermanuals.
Your product documentation includes:
• Dell PowerVault MD3400/3420/3800i/3820i/3800f/3820f Storage Arrays Getting Started Guide —
Provides an overview of system features, setting up your system, and technical specifications. This
document is also shipped with your system.
• Dell PowerVault MD3400 and 3420 Storage Arrays Owner’s Manual — Provides information about
system features and describes how to troubleshoot the system and install or replace system
components.
• Rack Installation Instructions — Describes how to install your system into a rack. This document is
also shipped with your rack solution.
• Dell PowerVault MD Series Storage Arrays Administrator's Guide — Provides information about
configuring and managing the system using the MDSM GUI.
• Dell PowerVault Modular Disk Storage Arrays CLI Guide — Provides information about configuring and
managing the system using the MDSM CLI.
• Dell PowerVault MD3400 and 3420 Storage Arrays Deployment Guide — Provides information about
deploying the storage system in the SAN architecture.
• Dell PowerVault MD34xx/38xx Series Support Matrix — Provides information about the software and
hardware compatibility matrices for the storage array.
Locating Your System Service Tag
Your system is identified by a unique Express Service Code and Service Tag number. The Express Service
Code and Service Tag are found on the front of the system by pulling out the information tag.
Alternatively, the information may be on a sticker on the chassis of the system. This information is used
by Dell to route support calls to the appropriate personnel.
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