Disaster Recovery (DR) vs. High Availability (HA)
What are the main differences between DR and HA? It’s a question about which we have been frequently asked and there is a common misconception on that. The following table compares DR with HA in the various aspects.
|
# |
DR |
HA |
|
Major Goal |
Resiliency |
Recovery |
|
Main Focus |
Decrease Downtime |
Decrease Recovery Time |
|
Implementation Destination |
Same as primary location |
Location other than primary location |
|
Network |
WAN |
LAN |
|
Position |
Subset of
|
Subset of DR |
|
Risk Level |
Whole System |
Sub Systems |
|
Major Root Cause |
Human or natural disasters |
Human or components’ issues |
|
Run Time |
On Events |
Regularly |
Please leave your comments and questions.
