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SATA (Serial Advanced Technology Attachment)

SATA (Serial Advanced Technology Attachment). Nick Moore Advanced Security Systems. Background. Physical s torage interface that connects host bus to mass storage devices Interfaces hard drives/optical drives to controllers/motherboards Evolved from Parallel ATA ( IDE)

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SATA (Serial Advanced Technology Attachment)

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  1. SATA(Serial Advanced Technology Attachment) Nick Moore Advanced Security Systems

  2. Background • Physical storage interface that connects host bus to mass storage devices • Interfaces hard drives/optical drives to controllers/motherboards • Evolved from Parallel ATA (IDE) • Needed faster data transfer rates • faster data transfer through higher signaling rates • more efficient transfer through an I/O queuing protocol

  3. IDE Ribbon Cable vs. SATA Cable • No more master and slave • One cable per device you want to connect • From 40 (possibly 80) conductors down to 7

  4. Progression • SATA Revision 1.0 • 1.5 gigabits per second • No latch, pins easily bent • SATA Revision 2.0 • 3.0 gigabits per second • Latching, revised port • SATA Revision 3.0 • 6.0 gigabits per second • Similar to Revision 2.0

  5. Features • Hotplugging Capability • Using SATA Power (Versus lagacy power connection), the device can be connected/disconnected while powered up • Native Command Queuing • Allows hard disk drives to internally optimize the order in which received read and write commands are executed • Reduces amount of unnecessary drive head movement • Increases performance and decreases wear on the drive in simultaneous read/write scenarios

  6. eSATA/eSATAp • Not compatible with SATA, but same internally • Used primarily for connecting external hard drives • Allows faster data transfer rates than USB • Operates at a max transfer rate of 6 gigabits per second (same as SATA Revision 3.0) • One-to-one connections, no signal sharing • External SATA (eSATA) • Requires a separate power supply to device • External SATA Power (eSATAp) • Combination of USB and eSATA • No separate power source needed

  7. SATA/eSATA Pin Breakdown • 3 grounds and 4 active data lines in 2 pairs • A+/A- Transmit Signals • B+/B- Receive Signals • Max cable length of 3.3’ • Differential signaling reduces noise interference

  8. SATA Power • Replaces older Molex legacy design • Standard: • Supplies 12 V, 5 V, and 3.3 V to drive • 15 pins • Slimline: • Supplies 5 V Only • 6 pins • Micro: • Supplies 5 V & 3.3 V • 9 pins

  9. SATA Power Pin Layouts Standard: Slimline: Micro:

  10. Citations • http://www.youtube.com/watch?v=5zgCPEDGeXE • http://www.youtube.com/watch?v=wtC8RhYHAAI • http://www.webopedia.com/TERM/S/Serial_ATA.html • http://www.youtube.com/watch?v=TvZr8Pr3_vE • http://en.wikipedia.org/wiki/Serial_ATA

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