User's Manual

246 Virtual Disks
NOTE: This option is available only if you did not select Intelligent Mirroring
on the Create Virtual Disk (Step 1 of 4) page.
NOTE: On a SAS controller with firmware version 6.1 and later, RAID 10
supports only even number of disks per span and a maximum of 8 spans with
32 disks in each span.
Let us consider that the controller has three enclosures with six physical
disks each (total number of available disks = 3 x 6 =18 disks). If you select
four disks per span, the controller creates four spans (18 disks/4 disks per
span = 4 spans). The last two disks of the last enclosure is not part of
RAID 10.
Select the number of disks to create a single spanned virtual disk drop
down menu—Enables you to create a single span virtual disk with 22 or 26
physical drives for PERC controllers. This drop down menu appears only if
you have selected RAID 10 in step 1 and the system has 22 or more than
22 physical drives.
Click Continue when you have completed the disk selection. If you want to
cancel the virtual disk, click Exit Wizard. If you want to return to the
previous screen and change your selections, click Go Back To Previous Page.
For PERC H700 and PERC H800 controllers, if any of the drives you selected
to include as a hot spare is in the spun down state, the following message is
displayed: The below listed physical drive(s) are in the spun down state.
Executing this task on these drive(s) takes additional time, because the
drive(s) need to spun up.
The message displays the ID(s) of the spun down drive(s).
Create Virtual Disk Advanced Wizard (Step 3 of 4)
Does my controller support this feature? See Supported Features.
This screen enables you to select attributes for the virtual disk. These
attributes include the name, size and read, write, and cache policy.
Depending on the controller and your previous virtual disk selections, the
items displayed on this screen can vary.
Do the following:
1
Type the name of the virtual disk in the Name text box.
The virtual disk name can contain only alphanumeric characters as well as
spaces, dashes and underscores. The maximum name length depends on