Hitachi HDT725025VLA380 - Deskstar 0A33423 T7K500 250GB SATA 7200RPM 8MB Cache Hard Drive User Manual

Deskstar T7K500 Hard Disk Drive Specification
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7.6 Vibration and shock
All vibration and shock measurements recorded in this section are made with a drive that has no mounting attach-
ments for the systems. The input power for the measurements is applied to the normal drive mounting points.
7.6.1 Operating vibration
7.6.1.1 Random vibration
The test is 30 minutes of random vibration using the power spectral density (PSD) levels shown below in each of
three mutually perpendicular axes. The disk drive will operate without non-recoverable errors when subjected to
the above random vibration levels.
The overall RMS (root mean square) level is 0.67 G.
7.6.1.2 Swept sine vibration
The drive will meet the criteria shown below while operating in the specified conditions:
• No errors occur with 0.5 G 0 to peak, 5 to 300 to 5 Hz sine wave, 0.5 oct/min sweep rate with 3-minute
dwells at two major resonances
• No data loss occurs with 1 G 0 to peak, 5 to 300 to 5 Hz sine wave, 0.5 oct/min sweep rate with 3-minute
dwells at two major resonances
7.6.2 Nonoperating vibration
The drive does not sustain permanent damage or loss of previously recorded data after being subjected to the envi-
ronment described below
7.6.2.1 Random vibration
The test consists of a random vibration applied in each of three mutually perpendicular axes for a duration of 10
minutes per axis. The PSD levels for the test simulate the shipping and relocation environment shown below.
The overall RMS (root mean square) level of vibration is 1.04 G.
7.6.2.2 Swept sine vibration
• 2 G (zero-to-peak), 5 to 500 to 5 Hz sine wave
• 0.5 oct/min sweep rate
• 3 minutes dwell at two major resonances
Table 43: Random vibration PSD profile break points (operating)
Direction
5Hz 17Hz 45Hz 48Hz 62Hz 65Hz 150Hz 200Hz 500Hz
RMS
(G)
x10
-3
[G2/Hz] 0.02 1.1 1.1 8.0 8.0 1.0 1.0 0.5 0.5 0.67
Table 44: Random Vibration PSD profile breakpoints (nonoperating)
Frequency 2Hz 4Hz 8Hz 40Hz 55Hz 70Hz 200Hz
G2/Hz 0.001 0.03 0.03 0.003 0.01 0.01 0.001

Hitachi HDT725025VLA380 - Deskstar 0A33423 T7K500 250GB SATA 7200RPM 8MB Cache Hard Drive Specifications

General

Brand	Hitachi
Model	HDT725025VLA380 - Deskstar 0A33423 T7K500 250GB SATA 7200RPM 8MB Cache Hard Drive
Category	Storage
Language	English