Section 28 Planning for the worst Flashcards
The individual elements, objects, or parts of a system that would cause the whole system to fail if they were to fail.
Single Point of Failure
An enclosure that provides two or more complete power supplies.
Redundant Power Supply
An unexpected increase in the amount of voltage provided.
Surge
A short transient in voltage that can be due to a short circuit, tripped circuit breaker, power outage, or lightning strike.
Spike
An unexpected decrease in the amount of voltage provided.
Sag
Occurs when the voltage drops low enough that it typically causes the lights to dim and can cause a comptuer to shut off.
Brownout
Occurs when there is a total loss of power for a prolonged period.
Blackout
Combines the functionality of a surge protector with that of a battery backup.
Uninterruptible Power Supply (UPS)
An emergency power system used when there is an outage of the regular electric grid power.
Backup Generator
- Portable Gas Engine
- Permanently Installed
- Battery Inventer
3 Types of Generators
Allows the combination of multiple physical hard disks into a single logical hard disk drive that is recognized by the operating system.
Redundant Array of Independent Disks (RAID)
Provides data striping across multiple disks to increase performance.
RAID 0
Provides redundancy by mirroring the data identically on two hard disks.
RAID 1
Provides redundancy by stripping data and parity data across the disk drives.
RAID 5
Provides redundancy by stripping and double parity data across the disk drives.
RAID 6