He also knows stuff about enterprise storage, security, and human space flight. Lee is based in Houston, TX. Email lee. Most of the DVT tests are rerun as reliability tests, but in this case the tests are performed by the independent quality team that is lead by Mr.
Van Patten. The number of samples is also considerably higher and each test is run for a longer duration to verify the reliability of the design.
Basically every spec that is mentioned in the spec sheet is tested in this phase, including all standard JEDEC tests and certifications. The first level of PVT tests are also run later during phase four and focus on the reliability and repeatability of the manufacturing process. Basically, the purpose of the PVT tests is to ensure that every drive coming out of the mass production line will be of the same quality and that is done by examining the drives from the production line using dye-and-pry and x-ray to inspect the PCB for any defects caused by the soldering process.
The other PVT tests evaluate the readiness of the factory's quality system incoming and in-process quality inspection, final quality control and out of box inspection to make sure that all quality control phases are capable of separating good and bad, and that no defective products will get through to the customers.
Ongoing Reliability Testing ORT is also set up to test a few drives from every production run to guarantee that nothing changes over time. The total length of the validation phase varies greatly.
It can be as short as two months if the design is relatively simple and similar to previous ones, but it can easily take over six months for more complex ones. Usually OCZ creates sets of engineering samples during validation as issues are found and fixed, but there isn't really any preset duration for validation -- it always depends on what is found during the verification and how significant modifications are needed. Ultimately a drive cannot move to the next phase until it passes all quality and reliability tests, so setting a strict deadline would be a bad idea for the company and for consumers to begin with.
In phase five the drive moves from engineering and verification to operations i. Other teams also finish up their actions to be ready for the launch and this is also the point when OCZ contacts us and other media about an upcoming product launch and sends out the review samples i.
PTI is a relatively big name in the manufacturing industry with over 10, employees and a number of high value customers including Apple, for instance. While visiting the factory, I certainly got the feeling that OCZ and PTI are very well integrated as the cooperation between the two is effectively frictionless, which is partially explained by the fact that prior to the acquisition, the employees of the factory had paychecks directly from OCZ.
Two surface-mount technology SMT lines in the factory are dedicated to OCZ with a total capacity of approximately 70, units per month. The process itself is very straightforward and contains only a handful of steps which should be the same for every manufacturer. The solder paste must be stored in near-zero temperature at all times or otherwise it will lose its soldering characteristics.
It can only withstand room temperature for a couple of hours before becoming waste, which is why the paste is stored in small cans to minimize the loss. Once the PCB has been printed and solder paste applied, the end result is what's pictured above. OCZ said in November last year that it had defaulted on a loan agreement after its business was hit because it was having trouble buying enough flash memory chips for its drives.
At that time, Toshiba said it had offered to buy the company as long as it could maintain the value of its business and keep its employees.
Toshiba is a major manufacturer of flash-memory chips, so it should be able to supply OCZ's SSD manufacturing operations with enough silicon. The acquisition brings Toshiba OCZ's enterprise and client SSD customers, both markets it intends to keep serving, the company said in a statement. Intel today unveiled its Pro series of flash drives, which include 2.
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