A logical drive
An array
Important:
Creating a Logical Drive from Unconfigured Capacity
To create an individual logical drive from unconfigured capacity you first define the parameters for the array. To do so, you specify the RAID level and the capacity. The RAID level indicates how the data will be striped across the drives in the array and its level of data protection. The capacity indicates how many drives you want to include in the array. You use the Select Array dialog to specify the RAID level and capacity. Note that the Select Array dialog only appears when you are creating a logical drive from an unconfigured capacity node. For more information, see Selecting an Array.
Next, you specify the parameters for the individual logical drive you will create on the array, using the Specify Logical Drive Parameters dialog.
Creating a Logical Drive from Free Capacity
Because free capacity resides only on an existing array, the overall capacity (number of drives) and RAID level have already been specified. Therefore, the Select Array dialog is by-passed when you create a logical drive from free capacity. When you select a Free Capacity node, the only need to specify the parameters for the individual logical drive you plan to create on the array. Use the Specify Logical Drive Parameters dialog to specify those parameters. For more information, see Specifying Logical Drive Parameters.
Creating a Storage Subsystem Logical Drive