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Seagate Barracuda ST3160021AS User Manual

Page 14

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6

Barracuda 7200.7 Serial ATA Product Manual, Rev. N

2.4

Physical organization

2.5

Recording and interface technology

2.5.1

Physical characteristics

Drive model

Read/write heads

Number of discs

ST3200822AS, ST3160827AS, ST3160023AS and ST3160021AS

4

2

ST3120827AS, ST3120026AS and ST3120022AS

3

2

ST380817AS, ST380013AS and ST380011AS

2

1

ST340111AS and ST340014AS

1

1

Interface

Serial ATA (SATA)

Recording method

16/17 EPRML

Recording density BPI (bits/inch max)

595,000 (671,500 on ST3200822AS model)

Track density TPI (tracks/inch max)

94,600 (98,000 on ST3200822AS model)

Areal density (Gbits/inch

2

max)

56.3 (68.5 on ST3200822AS model)

Spindle speed (RPM) (± 0.2%)

7,200

Maximum Internal transfer rate (Mbytes/sec)

85.4

Sustained transfer rate OD (Mbytes/sec max)

58

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

150 (SATA 1.0)

Interleave

1:1

Cache buffer

ST3200822AS, ST3160827AS, ST3160023AS, ST3120827AS,
ST3120026AS, ST380817AS, ST380013AS and ST340111AS

ST3160021AS, ST3120022AS, ST380011AS, and ST340014AS

8 Mbytes

2 Mbytes

Drive specification

Maximum height

(mm)
(inches)

26.035
1.028

Maximum width

(mm)
(inches)

101.6
4.00

Maximum length

(mm)
(inches)

146.99
5.787

Typical weight

(grams)
(pounds)

635
1.4

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