Seagate EE25.2 ユーザーズマニュアル

4

EE25.2 Series Product Manual, Rev. B

 

 

 

 

Formatted (512 bytes/sector)*

80 Gbytes

Guaranteed sectors

156,301,488

Interfacd

PATA

SATA

Bytes per sector

512

Physical read/write heads

2

Discs

1

Cache

8 Mbytes

Recording density, BPI 

840k bits/inch (typical)

Track density. TPI 

150k tracks/inch (typical)

Areal density

126 Gbits/inch

2 

(typical)

Spindle speed

5,400 RPM

Internal data transfer rate

450 Mbits/sec max

I/O data transfer rate

Up to 3 Gbytes/sec based on SATA 1 or SATA 2 host configuration

ATA data-transfer modes supported

PIO modes 0–4; Multiword DMA modes 0–2; Ultra DMA modes 0–5

Height

9.5 +/-0.2 mm (0.374 +/-.008 inches)

Width

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

Length

100.2 +/-0.25 mm

 

(3.945 +/-0.010 inches)

100.5 +/- 1.58 mm

 

(3.957 +/- 0.062 inches)

Weight

102 grams (0.22 lb) (maximum)

Average latency

5.6 msec

Power-on to ready

 

     -20 to 85°C

 

     -30 to -20°C

 

     3 sigma maximum at extreme cold temperature

 

3.0 seconds (typical), 5 seconds (max)

 

12 seconds (typical)

 

<30 seconds

Standby to ready

 

     -20 to 85°C

 

     -30 to -20°C

 

     3 sigma maximum at extreme cold temperature

 

3.0 seconds (typical), 5 seconds (max)

 

12 seconds (typical)

 

<30 seconds

Track-to-track seek time

1.0 msec (read, typical), 1.5 msec (write, typical)

Average seek time (random)

12.5 msec (typical), 14 msec (max)

Average seek, read (random)

13 msec (typical), 14 msec (max)

Average seek, write (random)

14 msec (typical), 15 msec (max)

Full-stroke seek

23 msec (typical); 24 msec (max)

Startup current 5V

1.30 amps (typical); 1.55 amps (max)

1.30 amps (typical); 1.55 amps (max)

Seek power at 25°C

1.65 watts / 0.33 amps (typical)

2.45 watts / 0.49 amps

Read power at 25°C

1.40 watts / 0.28 amps (typical)

3.00 watts / 0.60 amps (typical)

Write power at 25°C

1.50 watts / 0.30 amps (typical)

2.30 watts / 0.46 amps (typical)

Idle mode (active idle at 25°C)

1.65 watts / 0.33 amps (typical)

2.35 watts / 0.47 amps (typical)

Standby mode at 25°C

0.26 watts / 0.05 amps (typical)***

1.10 watts / 0.22 amps (typical)***

Sleep mode at 25°C

0.26 watts / 0.05 amps (typical)***

1.10 watts / 0.22 amps (typical)***

Voltage tolerance (including noise)

5V ± 5%

Ambient temperature
    Operating

 

    Nonoperating

 

-30° to 85°C (Extreme); -20° to 75°C (Rugged); 

 

–40° to 95°C (Extreme and Rugged)

Temperature gradient

 

(noncondensing)

20°C/hour (operating)

 

30°C/hour (nonoperating)