Dell PowerVault 775N (Rackmount NAS Appliance) - Manual (Page 42)

Expanding an Existing Volume
1. Find the virtual disk that corresponds to the volume you are going to expand.
2. Add a member to that virtual disk.
NOTE: After adding a member to a virtual disk, the virtual disk is reconstructed by the adapter. This operation
will take several hours.
3. After the virtual disk has completed the reconstruction process, perform a rescan operation.
4. Extend the specified volume with the new space available to the virtual disk.
Managing Disk Arrays
This section describes how to use Array Manager to configure and manage arrays with the Dell™ PowerEdge™ Expandable
RAID Controller 3/Dual Channel (PERC 3/DC) and PERC 3/QC controllers that are included with your NAS system. The PERC
3/DC and PERC 3/QC controllers are high-performance, intelligent, PCI-to-SCSI host adapters with RAID capabilities which
allow you to create up to 40 virtual disks per controller.
The following topics are discussed:
Recommended virtual disk configuration
Creating virtual disks
Deleting virtual disks
Reconfiguring and managing virtual disks
Creating Virtual Disks
The first step in configuring your system for improved system management is creating virtual disks.
NOTE: Virtual disks created using a supported PERC controller card cannot be created from array disks with an
aggregate size greater than 2 terabytes (TB). For example, you cannot select more than 30 array disks that contain 73
gigabytes (GB) regardless of the size of the resulting virtual disk. When you attempt to select more than 30 disks of
this size, a message displays that indicates that the 2-TB limit has been reached and that you should select a smaller
number of array disks. This is a standard SCSI limitation.
NOTE: To take advantage of all the system features such as Defrag and Encryption, use the default value of 64 KB
for the stripe size when creating a virtual disk.
To create a virtual disk, perform the following steps:
1. Right-click an array group.
2. Click Create Virtual Disk to launch the Create Virtual Disk Wizard.
3. Read the Welcome screen, and then click Next to continue.
The Select Creation Mode dialog box displays. You can cancel the operation at any time by clicking Cancel.
4. Select Custom Mode, and then click Next to continue.
The Select Disks and Virtual Disk Attributes screen displays.
5. Select the disks and confirm information presented in the wizard.