Tech ARP - Seagate 750GB Barracuda ES Enterprise Hard Drive Review

	Date :	14 March 2007
	Manufacturer :	Seagete
	Source :	http://www.seagat...
	Category :	Storage
	Author :	Dr. Adrian Wong
	Revision :	1.0
	Forum Link :	Discuss here !
	Views :	93002

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Seagate 750GB Barracuda ES Enterprise Hard Drive Review

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Breather Hole

Like all other hard drives, the 750GB Barracuda ES comes with a breather hole. In this case, it's located on the lower left end of the drive's underside.

The breather hole allows condensation inside the hard drive to escape as well as equalizes the hard drive's internal pressure with the ambient pressure. So, please make sure you do not occlude the hole when you install the hard drive!

Jumpers And Connectors

At the end of the PCB are the jumper block, SATA interface and SATA power connector (from left to right).

Unlike Parallel ATA drives, where the jumper block is used to set the drive as Master or Slave or to use Cable Select; the jumper block on this Serial ATA hard drive is only meant to set the SATA transfer mode.

By default, the drive is set to run at only SATA 1.5Gb/s. To have it run at SATA 3Gb/s, you need to remove the jumper.

Specifications

Model	• ST3750640NS
Formatted Capacity	• 750 GB
Guaranteed Sectors	• 1,465,149,168
Bytes Per Sector	• 512 bytes
Sectors Per Track	• NA
Cylinders	• NA
Read/Write Heads	• NA
Recording Method	• NA
Interleave	• 1 : 1
Spindle Speed	• 7,200 RPM
Cache Buffer	• 16 MB SDRAM
Average Latency	• 4.16 msec.
Maximum Data Transfer Rate	• 128.75 MB/s (internal) • 78 MB/s (sustained)
Maximum I/O Transfer Rate	• 300 MB/s (Serial ATA) • 100 MB/s (Ultra-ATA)
Average Seek	• 8.5 ms (Read) • 9.5 ms (Write)
Track-to-Track Seek	• 0.8 ms (Read) • 1.0 ms (Write)
Average Latency	• 4.16 msec.
Interface	• Serial ATA 3Gb/s • Serial ATA 1.5Gb/s • Ultra-ATA/100
Supported SATA Data Transfer Mode	• 3 Gbits/s • 1.5 Gbits/s
SATA II Hotplug Capability	• Yes
Maximum Size	• 26.11 mm (1.028 inches) high • 101.6 mm (4 inches) wide • 146.99 mm (5.787 inches) long
Maximum Weight	• 720 g • 1.58 lb
Power Requirements	• +12V DC • 2.8 A Max.
Operating Power	• 13.0 W (typical) • 9.3 W (idle) • 0.8 W (standby) • 0.807 W (sleep)
Ambient Temperature	• 5 °C to 55 °C (Operating) • -40 °C to 70 °C (Non-Operating)
Maximum Shock	• 68 G @ 2 ms (Operating) • 225 G @ 1 ms (Non-operating)
Drive Acoustics	• 3.2 bels (Seek) • 2.7 bels (Idle)
Contact Start-Stop Cycles	• 50,000 Cycles
Annualized Failure Rate	• 0.73 %
Non-Recoverable Read Errors	• 1 error per 10¹⁴ bits read
Warranty	• 5 Years Limited Warranty

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