Copy Backup
Copy backup is a backup made by simply copying data. Copy backup is an easy way to make backup, but it is a highly manual process. Copy backup only provides multiple versions of the protected data to the extent that multiple versions are manually maintained. Having multiple versions in a retention policy or retention cycle is important to allow recovery to different points in time, which is valuable for two reasons: first, when a failure occurs and data may be corrupted before it is noticed and a subsequent backup may over-write the only clean copy of the data from a time prior to the corruption and second, it is frequently important to restore data in large data sets as it was at a specific earlier time, collectively. An example of this second reason is in the case of financial our accounting data. If you restore all the invoices your customer has not paid from one point in time but restore the customers balance due from another point in time you have lost what is called referential integrity and your data is then in conflict. You don’t know which data should be viewed as being the correct data.
