In order to enable the smooth operation of an information system, the availability of data must be enabled at all times. However, due to various factors, there may be a loss of business data from the information system and thus the impossibility of continuing normal business. For this reason, it is necessary to have an automated or manual backup of all important data in the information system..
Depending on the specific system, an assessment is made which type of backup process is optimal. Depending on the needs and business requirements, it is possible to work:
- Full system backup,
- Incremental backup,
- Differential backup.
The media on which data can be backed up are:
- Local hard disk,
- External hard disk,
- Optical storage (dvd, blue ray disk),
- NAS device,
- Tape device,
- Remote server.
- Storage systems
In the case of the need for immediate or very quick recovery from a sudden breakdown on the information system, it is necessary to create a Disaster Recovery Site (DRS), i.e. locations with redundant equipment, which synchronizes in real time with key systems and enables a quick transition to the DRS infrastructure in case of force majeure.
