HP0-J73 · Question #137

HP0-J73 Question #137: Real Exam Question with Answer & Explanation

The correct answer is D. Electrical and physical interface. SAS and SATA drives share the same physical connector form factor and electrical signaling interface, which allows SATA drives to be installed in SAS backplanes.

Understanding HP Storage Components and Technologies

Question

Which component is the same for both SAS and SATA drive technologies?

Exhibit

Options

ASingle chain terminator
BSignal encoding/decoding processor
CDriver model transparent to parallel ATA
DElectrical and physical interface

Explanation

SAS and SATA drives share the same physical connector form factor and electrical signaling interface, which allows SATA drives to be installed in SAS backplanes.

Common mistakes.

A. SAS uses bus termination for its expander architecture, whereas SATA is a point-to-point protocol that does not use chain terminators.
B. SAS and SATA use entirely different protocol stacks and signal encoding - SAS is based on SCSI commands while SATA uses the ATA command set.
C. SAS uses a SCSI driver model while SATA relies on ATA/AHCI drivers; these driver models are not shared or transparent to each other.

Concept tested. SAS and SATA shared physical and electrical interface

Reference. https://www.sata-io.org/developers/sata-i-overview

Topics

#SAS#SATA#drive interface#physical connector

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