The logical drive/logical volume number referenced with each logical drive is dynamic; it changes when logical drives are created/deleted. This number is displayed in the logical drive (LDs/LVs) field of several SANscape windows including Dynamically Grow and/or Reconfigure LDs/LVs, Change Host LUN Assignments, Manage Existing LDs/LVs and Partitions, and the main window.

Used strictly as a placeholder that enables you to visually keep track of logical drives and logical volumes, this number is insignificant to the controller. That is, the controller does not report on the logical drives or logical volumes according to this number. For example, if four logical drives exist, and LD2 is deleted, the existing LD3 dynamically changes to LD2, and LD4 changes to LD3. Only the LD number changes; all LUN mapping and data on the logical drives remains unchanged.

Because the controller reports on the total number of logical drives, which in this case is three, the actual LD number as displayed in the LD field is irrelevant. In this example, if a new logical drive is created, it takes the LD number of the logical drives that was deleted, and the controller reports that there are a total of four logical drives. All existing logical drives return to their original primary/secondary designation.

NOTE: The LG number on the firmware terminal menu option View and Edit Logical Drives is not visually dynamic. After a logical drive is deleted, you see an empty placeholder. When a logical drive is created from the console or from the terminal, this empty placeholder is filled with the new logical drive.

The LD field in the Manage Existing LDs/LVs and Partitions window is dynamic; it changes when logical drives are created/deleted. For example, if you delete LD2, LD4 becomes LD3 and LD 2 becomes LD1. In the terminal menu option View and Edit Logical Drives, the LG field is not dynamic; an empty slot indicates that a logical drive was deleted.