The Database

December 27th, 2013

In addition, the practice of restoration will allow your team to easily cope with recovery, when it really will neobhodimo.Esli you are 100% confident in the backup, then restore it never over their production database. "We do not need After-Imaging. We use secure disks "Hard to believe, but there are administrators who manage the database without the use of After-Imaging. This put them at risk losing all data created after the formation of the last operational backup, and it can mean losing a day of work or more if the backup is performed less frequently. Few modern companies are able to restore his day job, and they may not survive the loss of data of this magnitude. After-Imaging mechanism not only protects the database against hardware failures such as disk failure. In general the situation with the loss of Data related to human factors.

The administrator can accidentally delete a database, the programmer can create a bug, but a user to make a serious mistake, everything is exactly in duplicate to be reproduced in mirrored disk system. After-Imaging mechanism protects the database from such errors (including hardware), writing notes about all the database transactions AI-extents, which can then be reproduced on the basis of Data retrieved from the main backup, thus allowing to recover the database at any time. The presence of this mechanism has kept a lot of energy and nerve cells for database administrators and their managers. Rules: All the databases that represent at least some value, should be included mechanism of After-Imaging.AI-extents must be regularly backed up in a safe place, at least ezhechasno.AI archives must be continuously roll on the backup database to ensure that backup themselves AI-archives are not damaged and functional.

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