Power Consumption Efficiency; Reliability; Data Reliability; Failure Prediction (S.m.a.r.t.) - Hitachi HTS421212H9AT00 - Travelstar 120 GB Hard Drive Specifications

Watts (RMS typical)
5
Seek average
Standby
Sleep
6
Startup (max. peak)
Average from power on to ready
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

Table 20: Power consumption efficiency

Power Consumption Efficiency
Capacity
120GB
100GB
80GB
60GB
40GB
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
• ECC implementation
On-the-fly correction performed as a part of read channel function recovers up to 16 symbols of error in one sector
(1 symbol is 10 bits).

6.3.2 Failure prediction (S.M.A.R.T.)

The drive supports the 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 76 and Section 13.39, "S.M.A.R.T. Function Set (B0h)"
on page 171.
All models
0.15
(Watts/GB)
0.0038
0.0045
0.0056
0.0075
0.0112
Travelstar 4K120 Hard Disk Drive Specification
1.7
0.1
4.5
3.0
13
bits read
28