Legacy Computer Storage Devices: PATA Overview

Introduction to PATA

• PATA stands for Parallel AT Attachment.
• Also referred to as Parallel ATA or simply ATA.
• Originated from the PC-AT standard used by IBM.

Historical Context

• Initially called IDE (Integrated Drive Electronics) by Western Digital.
• Enhanced IDE (EIDE) was an updated version.
• PATA technology evolved to increase data transfer speeds.

PATA Speeds

• Data transfer rates range from 16 MB/s to 133 MB/s.
• Supports connections not only for hard drives but also CD-ROMs and DVD-ROMs.

PATA Cables

• Two types of PATA cables: 40-wire and 80-wire.
  • 40-wire cable:
    • Original standard
    • Device 0 connects first, followed by device 1.
  • 80-wire cable:
    • Designed to reduce crosstalk at higher speeds.
    • Device 1 connects first, followed by device 0.

PATA Connectors

• Large compared to SATA connectors.
• 40-pin symmetrical connector with a missing pin for orientation.
• Notch at the bottom aids in correct alignment.

Differences Between PATA and SATA

• PATA cables are much larger and take up more space than SATA cables.

Conclusion

• PATA is considered a legacy technology.
• Not commonly found in modern systems but important to recognize when encountered.