UNCOVER: Renice extended-temp SSD with extreme temperature tolerance tests.

Temperature test of SSD products includes temp cycling test and temp shock test.

Note: “Plenty of frost turns to be water drops in the transition process from low temp to high temp, water drops may easily inflict short circuit on chip pins and thus burn the SSD, therefore, reinforcement and waterproof treatment have to be done to a reliable SSD!!!”

Temperature Cycling Test

Temp cycling first sets the temperature at -50°C and keep it for 4 hours, then increase the temperature to +90°C and keep it for 4 hours, and after this, lower the temperature to -50°C to finish one cycle and start another cycle, multiple cycles one by one.

Industrial grade operation temperature standard is -40°C to +85°C, because temperature deviation is common in temperature cabinets, in order to avoid different test results in client-side causing by the deviation, Renice in-house tests extend the temperature testing range to -50°C to +90°C.

Test Procedures:

1. First reduce the temperature to -50°C under the state of power off, and keep it for 4 hours.
Don’t lower the temperature in power on condition, crucially, because the chipset itself generates the temperature above +20°C in power on condition. In this case it is normally easy to pass low temperature test in the state of power on, so getting the disks completely chilled is necessary before testing it in power on state.

2. Power on and run read/write performance tests on the SSD, compare the performance with the performance in room temperature.

3. Aging test, check whether there is error during comparing data.

4. Power cycle tests with below general procedures: SSD Products Power Cycle Test Mechanism & Key Points

5. Increase temperature to +90°C and keep it for 4 hours, to be opposite to low temperature test, the process of increasing temperature is done in power on state to keep the internal chipset in high temperature all the time. Then take the steps 2, 3 and 4 after 2 hours.

6. Repeat high and low temperature tests for 10 times each.

The test is judged as fail if any abnormity detected during the test.

In current market, there is a common situation that commercial temperature SSD products are also screened for industrial use, while this could be risky. The screened products may fail after several temperature cycles, besides, normally they can’t pass strict temperature test or pass the test this time but fail next time.

Temperature Shock Test

Temp shock means the quick transition which takes only a few minutes(could be user-defined) from low temp to high temp and from high temp to low temp.

Normally the test starts from low temp, it takes less than 3 minutes from -50°C to + 90°C, or use the same method to start the test from high temp.

During the temp transition, BurninTest can be done in the same time to observe whether data comparison error happens during read/write tasks.

Specific test standards can be referred to: GB/T 2423.34, IEC 60068-2-38, GJB150.5 etc.

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