Seagate ST9750422AS ユーザーズマニュアル

4

Momentus Product Manual, Rev. C

Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal 
power.

The specifications listed in this table are for quick reference. For details on specification measurement or 
definition, see the appropriate section of this manual.

 

 

 

 

 

 

 

Formatted GB

750

640

750

500

Guaranteed sectors

1,465,149,168

1,250,263,728

1,465,149,168

976,773,168

Bytes per sector (logical/physical)

512/4K

Physical read/write heads

4

4/3

Discs

2

Cache (MB)

16

Recording density in BPI (max)

1,586k

Track density TPI (tracks/inch max)

341k

Areal density (Gb/in

2 

max)

541

Spindle speed (RPM)

5400

7200

Average latency (ms)

5.6

4.2

Internal transfer rate (Gb/s max)

1130

950

1305

1305

I/O data transfer rate (Gb/s max)

3.0 

ATA data-transfer modes supported

SATA 1.0, Serial ATA Revision 2.6

 

PIO modes 0–4

 

Multiword DMA modes 0–2

 

Ultra DMA modes 0–6

Height

9.5 +/- 0.2 mm (0.370 +/-.008 in)

Width

69.85 +/- 0.25 mm (2.750 +/- 0.010 in)

Length

100.35 +0.20 / -0.25 mm (3.951 +0.008 / -0.010 in)

Weight

115 g (0.254 lb)

Power-on to ready (sec typical)

3.6

4.0

Standby to ready (sec typical)

2.5

3.0

Track-to-track seek time, read (ms typ)

1.5

Average seek, read (ms typical)

11.0

Average seek, write (ms typical)

13.0

Startup current, +5V (max)

1.0A

Seek power (typical)

1.9W

2.5W

Read power (typical)

1.6W

2.1W