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ONTAP, Data ONTAP, Clustered Data ONTAP (cDOT), or Data ONTAP 7-Mode is
NetApp NetApp, Inc. is an American data infrastructure company that provides unified data storage, integrated data services, and cloud operations (CloudOps) solutions to enterprise customers. The company is based in San Jose, California. It has ranked ...
's proprietary operating system used in storage
disk array A disk array is a disk storage system which contains multiple disk drives. It is differentiated from a disk enclosure, in that an array has cache (computing), cache memory and advanced functionality, like redundant array of independent disks, RAID ...
s such as NetApp FAS and AFF, ONTAP Select, and Cloud Volumes ONTAP. With the release of version 9.0, NetApp decided to simplify the Data ONTAP name and removed the word "Data" from it, removed the 7-Mode image, therefore, ONTAP 9 is the successor of Clustered Data ONTAP 8. ONTAP includes code from
BSD The Berkeley Software Distribution (BSD), also known as Berkeley Unix or BSD Unix, is a discontinued Unix operating system developed and distributed by the Computer Systems Research Group (CSRG) at the University of California, Berkeley, beginni ...
''Net/2'' and ''4.4BSD-Lite'', Spinnaker Networks technology, and other operating systems. ONTAP originally only supported NFS, but later added support for SMB,
iSCSI Internet Small Computer Systems Interface or iSCSI ( ) is an Internet Protocol-based storage networking standard for linking data storage facilities. iSCSI provides block-level access to storage devices by carrying SCSI commands over a TCP/IP ...
, and
Fibre Channel Protocol Fibre Channel Protocol (FCP) is the SCSI interface protocol utilising an underlying Fibre Channel connection. The Fibre Channel standards define a high-speed data transfer mechanism that can be used to connect workstations, mainframes, supercomp ...
(including
Fibre Channel over Ethernet Fibre Channel over Ethernet (FCoE) is a computer network technology that encapsulates Fibre Channel frames over Ethernet networks. This allows Fibre Channel to use 10 Gigabit Ethernet networks (or higher speeds) while preserving the Fibre Channel ...
and FC-NVMe). On June 16, 2006, NetApp released two variants of Data ONTAP, namely Data ONTAP 7G and, with nearly a complete rewrite, Data ONTAP GX. Data ONTAP GX was based on grid technology acquired from Spinnaker Networks. In 2010 these software product lines merged into one OS - Data ONTAP 8, which folded Data ONTAP 7G onto the Data ONTAP GX cluster platform. Data ONTAP 8 includes two distinct operating modes held on a single firmware image. The modes are called ONTAP 7-Mode and ONTAP Cluster-Mode. The last supported version of ONTAP 7-Mode issued by NetApp was version 8.2.5. All subsequent versions of ONTAP (version 8.3 and onwards) have only one operating mode - ONTAP Cluster-Mode. NetApp storage arrays use highly customized hardware and the
proprietary {{Short pages monitor