Dell PowerVault 725N (Rackmount NAS Appliance) - Manual (Page 105)

2. From the toolbar, click the Create Volume icon.
The Create Volume Wizard appears.
3. Click Next.
You must select whether to create a partition or a volume. Ensure that the Dynamic Volume button is selected.
The dynamic group to which the volume belongs is automatically created and appears selected.
4. Click Next.
You are prompted for the volume layout and size of the volume to create.
5. Click Concatenated, Striped, or RAID-5.
6. If you selected Striped or RAID-5, choose the Number of Columns.
The number of columns represents the number of disks to be used in the dynamic volume array.
7. Select MB (megabytes) or GB (gigabytes) and enter the size of the volume in Total volume size field, or use the Query Max Size button.
Query Max Size works differently, depending on whether you have one disk or multiple disks selected.
l If you do not select a disk and click Query Max Size, the size shown in the Total volume size field is the maximum for all available disks.
l If you select a disk or disks and click Query Max Size, the size indicated is the maximum size for the selected disk(s). However, if you click Query
Max Size a second time, the size is the maximum for all available disks.
8. Click Next.
9. After all selections are made, verify your settings and click Next.
10. If you want to select a different disk for the volume you are creating, click Modify to display the Modify Disks dialog box.
11. Click the disk you want to change, select a disk from the Disk drop-down menu, and then click OK.
12. Click Assign a drive letter, select the drive letter, and then click Next.
13. Make sure Format this volume and NTFS are selected.
14. Type a volume label and an allocation unit size, if you chose to use a size other than the default.
15. Click Next, and then click Finish.
Working With Software-RAID NAS System Mirrors
A mirrored volume is a volume that duplicates your data to two physical disks. A mirror provides redundancy by simultaneously writing the same data to two
separate volumes that reside on different disks. If one of the disks fails, data continues to be written to and read from the unaffected disk.
This section discusses how to add, remove, or break a mirror.
Adding a Mirror
1. Launch Array Manager.
See " Launching Array Manager From the NAS Manager " in this section of the guide.
2. In the Dell OpenManage Array Manager window, click the Volumes folder to expand it.
3. In the left pane, right-click a volume name, and then click Add Mirror.
NOTICE: This section applies only to software-RAID NAS systems. For instructions on how to determine if you have a software-RAID or a hardware-RAID
NAS system, see " Determining if a NAS System Uses Software RAID or Hardware RAID " in the "NAS Manager" section of this guide.