User's Manual

Virtual Disks 227
• Select All Disks check box — Enables you to select all the physical disks in
all the enclosures.
•
Enclosure check box — Enables you to select all physical disks in the
enclosure.
NOTE: The Select All and Enclosure check boxes enable you to edit spans
after selecting the physical disks that comprise them. You can remove a span
and specify a span again with different physical disks before proceeding.
• Select Number of Disks per Span — Enables you to select the number of
disks in each span (default =2). This option is available only on SAS
controllers with firmware version 6.1 and later.
NOTE: This option is available only when you have not selected Intelligent
Mirroring on the Create Virtual Disk Advanced Wizard (Step 2 of 3) 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.
NOTE: Only physical disks that comply with the virtual disk parameters, selected in
the Create Virtual Disk Wizard page are displayed.
Select the required connector and the corresponding physical disk, and click
Continue.