Drive specification

ST3500630A

ST3500830A

Formatted Gbytes (512 bytes/sector)*

500

Guaranteed sectors

976,773,168

Bytes per sector

512

Default sectors per track

63

Default read/write heads

16

Default cylinders

16,383

Recording density in BPI (bits/inch max)

813,000

Track density TPI (tracks/inch avg)

145,000

Areal density (Mbits/inch2 avg)

114,400

Spindle speed (RPM)

7,200

Internal data transfer rate (Mbytes/sec max)

1,030

Sustained transfer rate OD (Mbytes/sec)

72

I/O data transfer rate (Mbytes/sec max)

100

ATA data-transfer modes supported

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

Cache buffer

16 Mbytes

16 Mbytes

Height (max)

26.11 mm (1.028 inches)

Width (max)

101.85 mm (4.010 inches)

Length (max)

146.99 mm (5.787 inches)

Weight (max) grams / lb.

635 / 1.39

Average latency (msec)

4.16

Power-on to ready (typical)

15 sec

Standby to ready (typical)

15 sec

Track-to-track seek time (msec typical)

0.8 (read), 1.0 (write)

Average seek, read (msec typical)

11.0

Average seek, write (msec typical)

12.0

Startup current (typical) 12V (peak)

2.8 amps

Seek power (typical) watts

9.9

Operating power (typical) watts

9.2

Idle mode (typical) watts

7.2

Standby mode (typical) watts

1.2

Sleep mode

1.2

Voltage tolerance

(including noise)

5V ± 5%

12V ± 10%

Ambient temperature

0° to 60°C (op.)

–40° to 70°C (nonop.)