The ANSI-approved Serial Attached SCSI (SAS) standard divides the SAS architecture into six layers and defines the function of each layer. This is Part 5 of a 5-part white paper series that describes in detail each of the layers in the SAS architecture as defined in the SAS standard. This paper discusses the SCSI application layer, which the highest layer of the SAS architecture and is the only layer that is not contained in a SAS port. This white paper also includes an integrated example describing the sequence of actions for one SCSI command through the SAS architecture layers.
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