Dell PowerVault MD3820f - Manual (Page 179)

Creating The Snapshot Using The Advanced Path
NOTE: Removing the drive letter of the associated virtual disk in Windows or unmounting the virtual
drive in Linux helps to guarantee a stable copy of the drive for the Snapshot.
Prepare the host server(s) as specified in Preparing Host Servers To Create The Snapshot Using The
Advanced Path .
To create a virtual disk snapshot using the advanced path:
1. Stop the host application accessing the source virtual disk, and unmount the source virtual disk.
2. In the AMW, select the Storage & Copy Services tab, select a valid source virtual disk.
3. Select Copy Services → Snapshot Image → Create Snapshot Virtual Disk. Alternatively, right-click
the source virtual disk and select Create → Snapshot Virtual Disk from the pop-up menu.
The Create Snapshot Virtual Disk Wizard - Introduction dialog is displayed.
4. Select Advanced, and click Next.
The Specify Names window is displayed.
5. Enter the Snapshot virtual disk name and the Snapshot repository virtual disk name and click Next.
The Allocate Capacity window is displayed.
6. In the Capacity allocation area, select:
– Free capacity on same disk group as base (recommended)
– Free capacity on different disk group
– Unconfigured capacity (create new disk group)
7. Enter the snapshot repository virtual disks capacity as a percentage of the source virtual disks
capacity and click Next.
The Specify Virtual Disk Parameters window is displayed.
8. In the Snapshot virtual disk parameters area, select the relevant mapping option, you can select:
– Automatic
– Map later with Storage Partition
9. In the Snapshot repository virtual disk parameters area, enter the system behavior when:
10. Click Next.
The Preview window containing the summary of the snapshot virtual disk is displayed.
11. Click Finish.
The Completed window is displayed.
12. Click OK.
13. In the Host Mappings tab, assign mappings between the snapshot virtual disk and the host that
accesses the snapshot virtual disk.
14. To register the snapshot virtual disk with the host operating system, run the host-based hot_add
utility.
15. To associate the mapping between the storage array name and the virtual disk name, run the host-
based SMdevices utility.
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