How Data ONTAP reports disk types

When Data ONTAP documentation refers to a disk type, it is the type used by Data ONTAP unless otherwise specified. RAID disk types denote the role a specific disk plays for RAID. RAID disk types are not related to Data ONTAP disk types.

SAS storage connection architecture
Data ONTAP disk type	Primary disk characteristic	Industry standard disk type	Description
BSAS	Capacity	SATA	Bridged SAS–SATA disks with added hardware to enable them to be plugged into a SAS shelf.
SAS	Performance	SAS
SATA	Capacity	SATA	Available only as internal disks for the FAS20xx systems.
MSATA	Capacity	SATA	SATA disk in multi-disk carrier disk shelf
SSD	High-performance	SSD	Solid-state disks

FC-AL storage connection architecture
Data ONTAP disk type	Primary disk characteristic	Industry standard disk type	Description
ATA	Capacity	SATA
FCAL	Performance	FC

Third-party storage
Data ONTAP disk type	Primary disk characteristic	Industry standard disk type	Description
LUN	N/A	LUN	A logical storage device backed by third-party storage and used by Data ONTAP as a disk. In this document, these LUNs are referred to as array LUNs to distinguish them from the LUNs that Data ONTAP serves to clients.