Hitachi IC25N020ATMR04, Specifications

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Travelstar 80GN Hard Disk Drive Specification
28
Footnotes:
1
The maximum fixed disk ripple is measured at the 5 volt input of the drive.
2
The disk drive shall not incur damage for an over voltage condition of +25% (maximum duration of
20 ms) on the 5 volt nominal supply.
3
The idle current is specified at an inner track.
4
The read/write current is specified based on three operations of 63 sector read/write per 100 ms.
5
The seek average current is specified based on three operations per 100 ms.
6
The worst case operating current includes motor surge.
6.2.1 Power consumption efficiency
Note: Power consumption efficiency is calculated as Power Consumption of Low Power Idle in Watts/Capacity
(GB).
6.3 Reliability
6.3.1 Data Reliability
• Probability of not recovering data is 1 in 10
13
bits read
• ECC implementation
On-the-fly correction performed as a part of read channel function recovers up to 20 symbols of error in one sector
(1 symbol is 8 bits).
6.3.2 Failure prediction (S.M.A.R.T.)
The drive supports Self-monitoring, analysis and reporting technology (S.M.A.R.T.) function. The details are
described in Section 11.8, “S.M.A.R.T. Function” on page 77 and Section 13.38, “S.M.A.R.T. Function Set (B0h)”
on page 161.
6.3.3 Cable noise interference
To avoid any degradation of performance throughput or error when the interface cable is routed on top or comes in
Average from power on to ready 3.3 3.3
Table 16: Power consumption efficiency
Capacity
Power Consumption
Efficiency (Watts/GB)
80GB 0.008
60GB 0.011
40GB 0.016
30GB 0.022
20GB 0.033
Watts (RMS typical) 80GB, 60GB models
40GB, 30GB 20GB
models