Dell PowerVault MD3000i Command Line Interface Guide - Page 50
numberOfPhysicalDisks, virtualDiskName, virtualDiskCapacity, segmentSizeValue, SAS | SATA] [capacity
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The command in this example automatically creates a new disk group and a virtual disk with the name Engineering_1. The disk group will have a RAID level of 5 (RAID 5). The command uses three physical disks to construct the disk group. The virtual disk created has a capacity of 20 GB. If each physical disk has a capacity of 73 GB, the total capacity of the disk group is 219 GB. Because only 20 GB are assigned to the virtual disk, 199 GB remain available for other virtual disks that you can later add to this disk group. The segment size for each virtual disk is 64 KB. Hot spares have not been created for this new disk group. You must create hot spares after running this command. Creating Virtual Disks with Software-Assigned Physical Disks You can let the MD Storage Manager software assign the physical disks when you create the virtual disk. To have the software assign the physical disks, you need only specify the number of physical disks to use. The MD Storage Manager software then chooses the physical disks on which the virtual disk is created. The RAID controller module firmware assigns a disk group number to the new disk group. The following syntax is the general form for the command: create virtualDisk physicalDiskCount= numberOfPhysicalDisks raidLevel=(0 | 1 | 5) userLabel="virtualDiskName" [physicalDiskType= (SAS | SATA)] [capacity=virtualDiskCapacity | owner=(0 | 1) | segmentSize=segmentSizeValue] [enclosureLossProtect=(TRUE | FALSE)]) NOTE: The physicalDiskType, capacity, owner, segmentSize, and enclosureLossProtect parameters are optional. You can use one or all of the optional parameters as needed to help define your configuration. You do not, however, need to use any optional parameters. This command is similar to the previous create virtualDisk command, which allows the user to assign the physical disks. This version of the command requires only the number and the type of physical disks to use in the disk group. You do not need to enter a list of physical disks. All other parameters are the same. Enclosure loss protection is performed differently when MD Storage Manager assigns the physical disks as opposed to when a user assigns the physical disks. (For an explanation of the difference, see "Enclosure Loss Protection" on page 52.) 50 Configuring a Storage Array