Disaster recovery blurs into high availability (or other way
round?) It's a virtualisation thing Workshop IT managers use two
terms when talking about systems availability. These are: High
Availability or “HA”, for keeping systems running without any
form of unplanned down time; and Disaster Recovery or “DR”, for
ensuring that systems are rapidly returned to operation if they
fail. Some confusion has developed between these terms over the
years. Today, many vendors use HA and DR almost interchangeably.
This is especially evident when they talk of applying the
expanding range of virtualisation solutions to improve systems
availability. It is almost the case today that the terms have
become blurred to such a degree that it is worth asking the
question, is there any difference between the two? Following on
from early consolidation of servers using virtualisation,
organisations are beginning consider what advantages there might
be in actively managing virtualised systems. In addition, there
is some interest in cr