SATAapparaten

SATAapparaten, or SATA devices, are storage and other peripheral devices that connect to a computer via the Serial ATA interface. The term includes hard disk drives, solid-state drives, and optical drives that use SATA connectors. SATA replaced the older Parallel ATA (PATA) standard, offering narrower cables, point-to-point connections, and support for hot-swapping.

The Serial ATA standard was developed in the early 2000s by the SATA-IO group. Its revisions include SATA I with 1.5 Gbit/s, SATA II with 3.0 Gbit/s, and SATA III with 6.0 Gbit/s. Each generation increases theoretical bandwidth and adds features such as improved command queuing and power management.

Performance depends on the drive and the interface speed. Theoretical throughput is 1.5, 3.0, or 6.0 Gbit/s, but real-world data rates are lower due to encoding and overhead. SATA III drives can approach around 550–600 MB/s for sequential reads on fast SSDs, while HDDs typically reach a few hundred MB/s; optical drives are slower.

Connections use a 7-pin data connector and a 15-pin power connector. Cables are thinner than PATA cables, and many SATA devices support hot-swapping, allowing insertion or removal without shutting down the system.

Common features include Native Command Queuing (NCQ) and support for AHCI mode, which optimizes performance on compatible systems, as well as energy-saving capabilities. SATA is backward compatible so newer controllers can operate with older devices at their respective speeds, though not faster than the device and interface.