PRELIMINARY/CONFIDENTIAL
MACH2 2.5-Inch Serial ATA Solid State Drive
45
Restriction of Hazardous Materials
STEC Inc. has adopted the RoHS Directive, also known as the Restriction of Hazardous Substances
Directive. The SSD is compliant with the European Parliament and Council Directive, i.e., assembled
with Pb-free or lead-free components.
Shock and Vibration
In determining the initial baseline for shock and vibration test levels, the SSD is exposed to
increasingly harsh levels of stress until the failure levels are determined. The tests where then
repeated using established stress levels to verify that the SSD would meet these specifications
consistently. The process established the shock and vibration levels that have been used in
subsequent shock and vibration testing.
Failure Criteria
Test failures are defined as:
•
Any single hard error (unrecoverable error)
•
Damage that renders a product inoperable
•
Failure to meet performance specifications
Random Vibration
For random vibration, the drives will perform without any errors after being tested at 15 min/axis on
three axes (X, Y and Z). During the operational vibration, the drive will be performing continuous
reads. The SSD also adheres to 16.3G RMS per MIL-STD-810F (Random, 20 Hz to 2,000 Hz; 3
vibration axes). Vibration levels are listed in Table 24. In addition to the previously mentioned
Failure
Criteria
, during the operating random vibration, the transfer rate of the drive should not degrade by
more than 10%.
Table 24.
Random Vibration Levels
Conditions
Grms
7 - 800 Hz Operating
2.17
5 - 500 Hz Non-Operating
3.08
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