Seagate ST380013A Fiche technique télécharger pdf (Page 15)

Barracuda 7200.7 Product Manual, Rev. N 7

2.6 Physical characteristics

2.7 Seek time

Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using

drive diagnostics. The specifications in the table below are defined as follows:

• Track-to-track seek time is an average of all possible single-track seeks in both directions.

• Average seek time is a true statistical random average of at least 5,000 measurements of seeks between

random tracks, less overhead.

*Measured in performance mode.

Note. These drives are designed to consistently meet the seek times represented in this manual. Physical

seeks, regardless of mode (such as track-to-track and average), are expected to meet or exceed the

noted values. However, due to the manner in which these drives are formatted, benchmark tests that

include command overhead or measure logical seeks may produce results that vary from these specifica-

tions.

2.8 Start/stop times

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

*Typical seek times (msec) Read Write

Track-to-track <1.0 <1.2

Average 8.5 9.5

Average latency: 4.16 4.16

Power-on to Ready (sec) 10 (max)

Standby to Ready (sec) 10 (max)

Ready to spindle stop (sec) 10 (max)

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 53 54

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