A CDE Definition
An allocated part of a physical disk drive that is designated and managed as an independent unit. For example, drives C:, D: and E: on a Windows PC can represent three physical drives or one physical drive partitioned into three logical drives. Contrast with physical drive. See logical volume.
An allocation of storage that is less than or more than one physical drive. For example, drive C: and D: on a Windows PC might be two logical volumes on disk drive 0. See volume set, volume, logical drive, logical backup and partition.
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