hesela.devSerial ATA Tunneled Protocol
The SAS protocol that carries SATA communication through a SAS domain to an attached SATA device.
An expander-connected SATA path uses STP through the SAS portion and native SATA on the final device link. SATA frames and flow-control rules remain relevant at that boundary. [2]
STP is not SCSI-to-ATA command translation. SAT defines that mapping, and software may perform it separately from transport. A SATA device appearing through a SCSI software interface does not establish that the device itself speaks SSP. [3] [4]
Relations
- related
- sas, sata, sas-expander, serial-scsi-protocol, serial-management-protocol
Citations
- SNIA dictionary: SAS Protocol Layer
- T10/02-158r1: SAS technical overview, slides 14, 87, 89 and 93-97 (2002)
- T10 working drafts: SCSI / ATA Translation scope
- Linux kernel: libATA SCSI-to-ATA translation
Sources & caveats
- Canonical protocol expansion follows the SNIA dictionary. [1] The T10 presentation is from 2002; this entry does not specify current expander limits.