Given
the high demand, the high availability architecture is one of the most
important requirements for an Enterprise development. There are extensive set
of high availability features, which protect the components and applications
from untimely and unplanned down time and in return minimize the planed
downtime.
A
network high availability system is created to function when either of its
components fail to work. Designed to do this, the high
availability system contains backup components which it automatically
switches over to when one or more of its active components stop working. The
system is designed to switch automatically primarily to make the fail over to
look seamless to the users so that the service and function is not interrupted
in anyway.
Features &Benefits of High
Availability System
- Built-in Redundancy:
Although
high availability makes use of high quality equipment by default to built
highly durable systems, but they still cannot promise complete reliability. The
systems are still vulnerable to outages. To ensure utmost reliability, high
availability systems come with built-in redundancy. The critical parts of the
IT systems will be put together with redundancy in order to provide 100 percent
uptime.
- Real-Time Backups:
Today
most of the backup tools work on a schedule or on demand. In order to ensure
that the recovery copy is accurate within a short frame of time, there has to
be a tool that allows more frequent backups. Real-time backups or continuous
backups allow automatically saving a copy of every change made to a file,
essentially capturing every version of the file and guarantying that the
recovery copies are accurate to within a few minutes.
- Automated Fail-Over:
During
the time of unplanned outage, it becomes extremely important to transfer the
operations and applications to backup resources in the shortest time frame.
When this failover situation occurs, traditionally human intervention is
required, which is quite slow and unreliable. To deal with this critical
problem, high availability system come with an advanced automated fail-over
technology that enables both automated fail-over and automated fail-back when
the original outage is resolved.
- Automated Off-Site Backups:
With
advancement in technology a better backup solution has been developed called
the automated off-site backups. Unlike the traditional method where the backup
copies required to be shifted to a secondary location manually, the automated
off-site backup does it without depending on IT personnel to
execute that process.
- Convenient implementation:
One
of the most interesting and useful features of high availability is that it is
very convenient. Implementation of High availability systems do not interrupt
business operations as they are assembled and tested separately, making its
implementation hassle-free. Once the system is
- Cost efficient:
High
availability systems are not just more reliable and convenient, but are also
cost efficient. With the high availability system, one doesn’t require many
servers. Just a single physical server is capable of running 2 or more virtual
servers, hence cutting down on the extra cost associated with purchasing
additional servers.
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