To understand the concepts in this document, you might need to know how certain terms are used.
- array LUN
- The storage that third-party storage arrays provide to storage systems running Data ONTAP software. One array LUN is the equivalent of one disk on a native disk shelf.
- LUN (logical unit number)
- A logical unit of storage identified by a number.
- native disk
- A disk that is sold as local storage for storage systems that run Data ONTAP software.
- native disk shelf
- A disk shelf that is sold as local storage for storage systems that run Data ONTAP software.
- storage controller
- The component of a storage system that runs the Data ONTAP operating system and controls its disk subsystem. Storage controllers are also sometimes called controllers, storage appliances, appliances, storage engines, heads, CPU modules, or controller modules.
- storage system
- The hardware device running Data ONTAP that receives data from and sends data to native disk shelves, third-party storage, or both. Storage systems that run Data ONTAP are sometimes referred to as filers, appliances, storage appliances, V-Series systems, or systems.
- third-party storage
- The back-end storage arrays, such as IBM, Hitachi Data Systems, and HP, that provide storage for storage systems running Data ONTAP.
