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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