Operational responsibilities, what is the difference between buffer and cache? Computer room to prevent server power off, remote control card

1. Operation and Maintenance responsibilities
• Data cannot be lost
• The website is running in the hour
• Better User Experience
What's the difference between 2.buffer and cache?
Buffeer buffer data is written to memory in the buffer area write buffer ' write cache '
Cache buffer reads read cache from cache in memory

3. Engine room to prevent server power off
   A. Dual power supply AB road (using different Transformers).
   B. UPS (uninterruptible power supply) battery pack 30 minutes up to one hour
   C. Diesel Generator + oil tank
   D. Signing of an emergency oil supply agreement at a nearby petrol station
   4. Remote CONTROL card
   Dell IDrac
   Role:
   A. Remote control and Management Server
   B. Remote Restart Open machine
   C. Re-installation system

Operational responsibilities, what is the difference between buffer and cache? Computer room to prevent server power off, remote control card