User's Manual

38 Configuration
You can change the Read Policy, Write Policy, and other properties of a virtual
disk at any time after the virtual disk is created. To do this, follow these steps:
1
Select the Logical View tab in the left panel of the Dell SAS RAID Storage
Manager screen.
2 Select a virtual disk icon in the left panel of the window.
3 In the right panel, select the Operations tab, and then select Set Virtual
Disk Properties.
A list of Virtual Disk Properties appears in the right panel. The properties
include the Read Policy, Default Write Policy, an option for Write Through
for a failed or missing battery, IO policy, Access Policy, Disk Cache Policy,
and Background Initialization.
4 Change the virtual disk properties as needed in the right panel. For
information on these properties, see Understanding Virtual Disk
Parameters.
5 Click Go to accept the changes.
Changing a Virtual Disk Configuration
You can use the Dell SAS RAID Storage Manager Reconstruction Wizard to
change the configuration of virtual disks on a
Dell system with a PERC 5/i
controller or a PERC 6/i controller
. You can change the configuration for
virtual disks at the following RAID levels for these RAID controllers:
• PERC 5/i controller: RAID 0, RAID 1, and RAID 5
• PERC 6/i controller: RAID 0, RAID 1, RAID 5, and RAID 6
NOTICE: Be sure to back up the data on the virtual disk before you change its
configuration.
The Reconstruction Wizard allows you to change a virtual disk configuration
by adding disk drives to the virtual disk, removing disk drives from it, or
changing its RAID level.
NOTE: You cannot change the configuration of a RAID 10 virtual disk. You cannot
change a RAID 0, RAID 1, RAID 5, or RAID 6 configuration if two or more virtual
disks are defined on a single disk group. (The Logical view tab shows which disk
groups and disk drives are used by each virtual disk.)