Storage array performance during virtual disk copy, Setting copy priority – Dell PowerVault MD3200i User Manual

Page 182

Advertising
background image

182

Configuration: Premium Feature—Virtual Disk Copy

9 Type yes and click Finish.

NOTE:

Operation in Progress icons are displayed on the source virtual disk and the

target virtual disk while the virtual disk copy has a status of In Progress or Pending.

For more information, see the PowerVault Modular Disk Storage Manager

online help topics.

Storage Array Performance During Virtual Disk

Copy

The following factors contribute to the overall performance of the storage

array:

• I/O activity
• Virtual disk RAID level
• Virtual disk configuration—Number of drives in the virtual disk groups
• Virtual disk type—Snapshot virtual disks may take more time to copy than

standard virtual disks

During a virtual disk copy, resources for the storage array are diverted from

processing I/O activity to completing a virtual disk copy. This affects the

overall performance of the storage array. When you create a new virtual disk

copy, you define the copy priority to determine how much controller

processing time is diverted from I/O activity to a virtual disk copy operation.

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 Virtual Disk Copy Manager.

The Copy Manager window is displayed.

book.book Page 182 Tuesday, June 18, 2013 3:15 PM

Advertising
This manual is related to the following products: