What strategy did you use to implement the disaster recovery element when implementing a business continuity plan? [For a description of the differences between disaster recovery and business continuity, see my article on disaster recovery or business continuity?].
You may have heard of the terms superheat, cold and warm recovery, but what do they mean, what are the advantages and disadvantages of each service?
Hot spare
In the few minutes that a disaster occurs, users can usually use hot spares. This level of service is achieved by the complete repetition of the covered computer systems [hardware, software and data]. You also need to establish an elastic network connection with the Hot Site.
Benefits - ready to use; committed [customer].
Disadvantages - cost; complexity, management.
Hot spare
In the few hours that a disaster occurs, users can usually use hot spares. This is by far the most common type of service used for IT disaster recovery, with typical recovery times ranging from 8 hours to 24 hours [depending on complexity, location and amount of data].
The service can be provided from a remote recovery center or provided to the site in the event of a disaster. Depending on the equipment involved, the configuration can be installed in an existing facility or mobile recovery unit.
It should be noted that although the hot spare option is usually dedicated to one customer, the hot spare is provided on a subscription basis. The industry standard for each configuration is 10 to 25 users. Therefore, availability cannot be guaranteed in the event of a disaster. The test is usually also the scheduled number of days PA
Advantages - reduced costs; reasonable availability
Disadvantages - availability; longer recovery schedules; limited testing; available only for a limited time after a disaster.
Cold standby
A cold standby is a computer and personnel facility that is provided to a customer within hours of the event. If no service is provided by the contract to provide the necessary computer equipment, the recovery period may be several days. It is not uncommon to combine Warm and Cold alternate services, providing a very flexible recovery method.
A full-service office space is also available for subscription. These are usually equipped with PCs, servers, printing devices and network infrastructure. These will be described as business recovery centers, and cold space can also be used for central systems.
Benefits - Reduced costs; plenty of free space [can accommodate large systems]. The business recovery center can accommodate hundreds of people.
Disadvantages - availability; longer recovery schedules; limited testing; available only for a limited time after a disaster occurs; additional recovery services are required.
EMA continuity
Orignal From: What is the difference between hot, warm and cold disaster recovery?
No comments:
Post a Comment