Users Guide

• Physical disk 0:3:0
• Physical disk 0:4:0
Physical Disks Selected
The Physical Disks Selected section of the page displays the disks you have chosen. In this example, two disks are selected.
• Physical disk 0:0:0
• Physical disk 0:1:0
Each RAID level has specic requirements for the number of disks that must be selected. RAID 10, RAID 50, and RAID 60 also have
requirements for the number of disks that must be included in each stripe or span.
If the controller is a SAS controller with rmware versions 6.1 and later and you selected RAID 10, RAID 50, and RAID 60, the user interface
displays the following:
• All Disks — Enables you to select all the physical disks in all the enclosures.
• Enclosure — Enables you to select all physical disks in the enclosure.
NOTE: The All Disks and Enclosure options enable you to edit spans after selecting the physical disks that comprise them. You
can remove a span and specify a span again with dierent physical disks before proceeding.
• 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 rmware version 6.1 and later.
NOTE: This option is available only if the Intelligent Mirroring on the Create Virtual Disk Advanced Wizard (Step 2 of 3)
page.
NOTE: On a SAS controller with rmware 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.
NOTE: RAID Level 10 virtual disk creation command from Storage Management CLI does not support optional parameter
spanlength on PERC 9 and PERC 10 hardware controllers.
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 are not part of RAID 10.
• Select the number of disks to create a single spanned virtual disk list box — Enables you to create a single span virtual disk with 22
or 26 physical drives for PERC controllers. This list box option appears only if you have selected RAID 10 in step 1 and the system has
22 or more 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.
Create Virtual Disk Advanced Wizard Step 3
The Create Virtual Disk Advanced Wizard (Step 3 of 3) - <Controller Name> page displays the summary of attributes of the selected
RAID level. The attributes include Bus Protocol, Stripe Element Size, Read Policy and the selected physical disk. The default values of the
virtual disk attributes excluding the RAID level are recommended for the selected RAID level.
1 In the Name eld, type a name for the virtual disk.
The virtual disk name can contain only alphanumeric characters, spaces, dashes, and underscores. The maximum length depends on
the controller. In most cases, the maximum length is 15 characters.
The name cannot start with a space or end with a space. It is recommended that you specify a unique name for each virtual disk. If
you have virtual disks with the same name, it is hard to dierentiate the generated alerts.
2 In the Size eld, type the size of the virtual disk.
Virtual Disks
135