Data Back-up Resources
It is Important to have a data back up policy
Performing consistent, regular backups of critical business data is a vitally important part of any recovery strategy. When treated as an afterthought or merely as a checkbox item on an annual IT audit, the risks of losing critical data are significantly elevated. For these reasons, it is important to establish a disciplined regimen of data protection defined by a set of clear backup policies that can be closely followed and monitored by IT and business stakeholders alike.
What is a backup policy?
A backup policy is a pre-defined, set schedule whereby information from business applications such as Oracle, Microsoft SQL, email server databases and user files is copied to disk and/or tape to ensure data recoverability in the event of accidental data deletion, corrupted information or some kind of a system outage. The policies will typically have a default protection scheme for most of the servers in the environment, with additional policies for certain critical applications or data.
Backup Types
The most obvious place to start building a policy is with a full backup. A full data backup consists of taking a complete copy of all the data on a particular host or set of hosts. If a data loss event occurs, the more recent the full backup is, the easier it will be to recover information. For this reason, some IT shops will run full backup jobs each night. In some larger environments, however, full backup jobs make take more than 24 hours to complete and will consume a lot of tape resources. Consequently, many data centers will typically run a full backup over the weekend and run either incremental or differential backups during the week to reduce both the nightly backup window and economize on tape media.
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