Hitachi HTS541040G9AT00 Specifications - Page 40

Reliability - hard disk drive model

Page 40 highlights

Watts (RMS typical) All models Active Idle average 1.1 Low Power Idle average 0.65 Read average 4 2.0 Write average 2.0 Seek average 5 2.5 Standby 0.2 Sleep 0.1 Startup (max. peak) 6 5.0 Average from power on to ready 3.8 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 17: Power consumption efficiency Capacity 100GB 80GB 60GB 40GB 30GB 20GB Power Consumption Efficiency (Watts/GB) 0.007 0008 0.011 0.016 0.022 0.033 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 1013 bits read • 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). Travelstar 5K100 Hard Disk Drive Specification 26

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Travelstar 5K100 Hard Disk Drive Specification
26
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 16 symbols of error in one sector
(1 symbol is 10 bits).
Active Idle average
1.1
Low Power Idle average
0.65
Read average
4
2.0
Write average
2.0
Seek average
5
2.5
Standby
0.2
Sleep
0.1
Startup (max. peak)
6
5.0
Average from power on to ready
3.8
Table 17: Power consumption efficiency
Capacity
Power Consumption Efficiency
(Watts/GB)
100GB
0.007
80GB
0008
60GB
0.011
40GB
0.016
30GB
0.022
20GB
0.033
Watts (RMS typical)
All models