- Typical Failure Schedules
- 1% - 2% die during assembly and initial power up
- 2% - 5% die during 30-day high-load burn-in tests
- 1% - 2% die during first year of service
- Avoidable Suport Issues ( all are 95% preventable )
- bad admin ( doesn't know how to debug simple problems or follow proceedures )
- releasing untested systems and software and proceedures ( poor QA and QC )
- bad assembly ( loose screws, loose wires, metal-to-wire vibrations
- loose wires on the patch panel, loose power cords
- ambient temperature too high ( should be 65F or less )
- fans .. which causes the system to overheat
- bad ( cheap ) memory .. use high-quality memory
- dead power supply .. ( bad vendors/manufacturers, overworked ps )
- random failures are bad parts bought from the wrong vendors
- failed parts should be evenly distributed amongst all manufacturers
- General Costs
- $1.oo == Relative Costs to fix something in R/D stage
- $2.oo == Relative Costs to fix something at Manufacturing stage
- $4.oo == Relative Costs to fix something at Final QA/Shipping/Testing
- $8.oo == Relative Costs to fix something at Customer site
- $16.oo == Relative Costs to fix something after receiving the returned products
- Airline, Hotel, meals, cars
- Costs of support servers, testing scripts
- Costs of managers, meetings, paperwork, etc
- Costs of Offices, office admin, invoicing, overhead
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