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4 error rate – FUJITSU MBA3073NP User Manual

Page 30

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Table 2.3

Environmental/power requirements (continued)

Specification

Item

MBA3300NC

MBA3300NP

MBA3147NC

MBA3147NP

MBA3073NC

MBA3073NP

Regulation ±

5

%

Ready (average)

0.5 A

Peak operating current

Maximum (peak) DC

(*6)

1.5 A

+5V DC

Peak operating current

DC (reference) (*6)

0.79 A

Power

requirement

(*5)

Ripple (+5 V, +12 V)

250 mVp-p or less (*7)

(*1)

For detail condition, see Section 4.1.

(*2)

Vibration applied to the drive is measured at near the mounting screw hole on the frame as much
as possible.

(*3)

At random seek write/read and default on retry setting with log sweep vibration.

(*4)

At power-off state after installation

Vibration displacement should be less than 2.5 mm.

(*5)

Input voltages are specified at the HDD connector side during HDD Idle state.

(*6)

Operating currents are values under random W/R operation of full partition at about 220 IOPS.

(*7)

High frequency noise (over 20 MHz) is less than 100 mVp-p.


2.1.4 Error

rate

Errors detected during initialization and replaced by alternate block assignments are not included
in the error rate. Data blocks to be accessed should be distributed over the disk equally.


(1) Unrecoverable

error

rate

Errors which cannot be recovered within 63 retries and ECC correction should not exceed 10 per
10

16

bits read.

(2)

Positioning error rate

Positioning errors which can be recovered by one retry should be 10 or less per 10

8

seeks.

26

C141-E270

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