Disaster recovery is important on all computer systems, even those that employ fault-tolerant devices and reconfiguration. When it comes to lost or corrupt data, no company is exempt. Any company can lose valuable files, and the company may have to close if the lost data is so important that it causes loss of business.
Because data can be lost or corrupt by various means, it is very important for most companies to devise a strategy for recovering from data loss.
Many companies manage their disaster recovery by performing a backup of all data or any data that has changed since the last backup. This allows company administrators to recover from data loss at any time and can prevent any downtime due to data loss.
Performing a daily backup of data can help prevent data loss because you can restore files that are lost or corrupted. However, this plan does not allow you to recover from natural disaster. In case of a natural disaster, such as a fire, earthquake, or flood, the backup store of data is worthless if the physical hardware from which the backup was made is no longer usable. Therefore, some companies have a spare server that is identical to the one in use but is stored at a distant facility, such as a branch office.
If a natural disaster occurs, business can resume from the branch office when all the data is restored to the duplicate server hardware. This can prevent a company from having to close, which is extremely important, especially if there is an Internet presence that the company hosts internally.
To plan for disaster recovery, the administrator needs to determine how many days of data can be lost without the company feeling severe repercussions. This timeframe can determine how often data backups must be performed. The administrator must also determine how long the server can be offline for data to be restored when data loss occurs and how long the server can be offline while data files are being backed up. Once these decisions are made, the administrator can then determine which backup strategy is best for the company.
[tags]diana huggins,data protection,disaster planning & recovery,data loss,backup plan[/tags]