3.2 Environmental conditions and reliability
Table 3.2 Environmental conditions and reliability
| Item |
| Ultrastar | Ultrastar |
| Ultrastar | Ultrastar | |
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|
| ||||||
Environmental |
| operating |
| 5 to 55°C |
|
| ||
conditions | Temperature |
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|
| storage/shipping |
|
|
| |||
| Temperature gradient |
| 20°C per hour maximum |
| ||||
| Humidity | operating |
| 5 to 90%RH |
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| ||
|
|
| 5 to 90%RH |
|
| |||
| Wet bulb temperature | 29°C maximum (non condensing) | ||||||
| Atmosphere |
| No corrosive gas, saline atmosphere | |||||
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|
|
| or |
| |||
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|
| (Example. organic silicon,organic tin) | |||||
| Altitude | operating |
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|
| |||
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|
|
| ||||
| Magnetic field |
|
| 400 micro Tesla maximum |
| |||
Shock and | Vibration | operating |
| 9.8 m/s2(1.0G) maximum |
| |||
vibration | (see Note 6) |
| 49 m/s2(5.0G) maximum |
| ||||
| Shock | operating | 147 m/s2(15G) maximum | [11ms] | ||||
| (see Note 7) | 735 m/s2(75G) maximum | [11ms] | |||||
|
|
| 2450m/s2(250G) maximum | [2ms] | ||||
Acoustic noise | Acoustic noise (see Note 8) |
| 3.4 bel average |
|
| |||
Reliability | Data Reliability (see Note 9) | Recoverable error: | 10 errors in 1012bits read | |||||
|
|
| 10 errors in 1016bits read | |||||
| Seek error rate (see Note 9) |
| 10 errors in 108 seeks |
| ||||
(see Note 10) | Life |
| 5 years (Surface temperature of HDA is 45°C or less) | |||||
|
|
| Life of the drive does not change in the case that the | |||||
|
|
| drive is used intermittently. (See section 7.6) | |||||
| MTBF (see Note 11) |
| Expected 1,200,000 hours |
| ||||
Drawing No. Sheet No. Revision ６ | ||
K6610091 | 11/43 | 2005/2/23 |
