DiamondMax 21 SATA Product Manual
Page 31
...no pure tones). For all tests, the drive is placed in the following equation: (Number of seeks per second = 0.4 / (average latency + average access time) Table 8: Fluid Dynamic Bearing (FDB) motor acoustics STM3500630AS STM3320620AS, STM3320820AS, and STM3250820AS ...max)** 3.4 bels (typ)** 3.6 bels (max)** 2.7 bels (typ)*** 2.8 bels (max)*** 3.0 bels (typ)*** 3.2 bels (max)*** *During periods of drive idle, some offline activity may increase acoustic and power to operational levels. **Measured in performance mode. ***Measured in quiet mode. 2.11 Electromagnetic immunity When properly...
...no pure tones). For all tests, the drive is placed in the following equation: (Number of seeks per second = 0.4 / (average latency + average access time) Table 8: Fluid Dynamic Bearing (FDB) motor acoustics STM3500630AS STM3320620AS, STM3320820AS, and STM3250820AS ...max)** 3.4 bels (typ)** 3.6 bels (max)** 2.7 bels (typ)*** 2.8 bels (max)*** 3.0 bels (typ)*** 3.2 bels (max)*** *During periods of drive idle, some offline activity may increase acoustic and power to operational levels. **Measured in performance mode. ***Measured in quiet mode. 2.11 Electromagnetic immunity When properly...
DiamondMax 21 SATA Product Manual
Page 32
... are based on the following assumptions for desktop personal computer environments: • 2400 power-on-hours per year. • 10,000 average motor start -stop cycles per hour and a 50% duty cycle) 3 years on -hours, temperature, and I /O duty cycle may reduce the...of 0.7 million hours) when operated in an environment of ambient air temperatures of IEC950 and EN 60950. 2.13.2 Electromagnetic compatibility Hard drives that all applicable sections of 25°C. Nonrecoverable read errors Annualized Failure Rate (AFR) Contact start /stop cycles Warranty Preventive maintenance...
... are based on the following assumptions for desktop personal computer environments: • 2400 power-on-hours per year. • 10,000 average motor start -stop cycles per hour and a 50% duty cycle) 3 years on -hours, temperature, and I /O duty cycle may reduce the...of 0.7 million hours) when operated in an environment of ambient air temperatures of IEC950 and EN 60950. 2.13.2 Electromagnetic compatibility Hard drives that all applicable sections of 25°C. Nonrecoverable read errors Annualized Failure Rate (AFR) Contact start /stop cycles Warranty Preventive maintenance...