Administrator Guide

Setting copy priority
You can use the Copy Manager to select the rate at which a virtual disk copy completes for a selected copy pair. You can change the copy
priority for a copy pair at any of these times:
• Before the virtual disk copy begins
• While the virtual disk copy has a status of In Progress
• When you re-create a virtual disk copy
To set copy priority:
1. In the AMW, select the Storage & Copy Services tab and select Copy Services > Virtual Disk Copy > Manage Copies.
The Copy Manager window is displayed.
2. In the table, select one or more copy pairs.
3. Select Change > Copy Priority.
The Change Copy Priority window is displayed.
4. In the Copy Priority area, select the appropriate copy priority, depending on your system performance needs.
NOTE: There are five copy priority rates available:
• lowest
• low
• medium
• high
• highest
If the copy priority is set at the lowest rate, I/O activity is prioritized, and the virtual disk copy takes longer.
Stopping a virtual disk copy
You can stop a virtual disk copy operation that has an In Progress status, a Pending status, or a Failed status. Stopping a virtual disk copy
that has a Failed status clears the Needs Attention status displayed for the storage array.
Keep these guidelines in mind when you stop a virtual disk copy:
• To use this option, select only one copy pair in the Copy Manager.
• When the virtual disk copy is stopped, all of the mapped hosts have write access to the source virtual disk. If data is written to the
source virtual disk, the data on the target virtual disk no longer matches the data on the source virtual disk.
To stop a virtual disk copy, complete the following steps:
1. In the AMW, select the Storage & Copy Services tab and select Copy Services > Virtual Disks > Manage Copies.
The Copy Manager window is displayed.
2. Select the copy pair in the table.
3. Select Copy > Stop.
4. Click Yes.
Recopying a virtual disk
You can recopy a virtual disk when you have stopped a virtual disk copy and you want to start it again or when a virtual disk copy has
failed. The Recopy option overwrites existing data on the target virtual disk and makes the target virtual disk read-only to hosts. This
option fails all snapshot virtual disks associated with the target virtual disk, if any exist.
Preparing host servers to recopy virtual disk
NOTE:
Before you create a copy of a source virtual disk, stop any data access (I/O) activity or suspend data transfer to
the source virtual disk (and, if applicable, the target disk) to ensure that you capture an accurate point-in-time image of
the source virtual disk. Close all applications, including Windows Internet Explorer, to make sure all I/O activity has
stopped.
132 Premium feature—virtual disk copy