Recovery of infrastructure according to objectives

The media used for backups and the restoration of backups are tested regularly to ensure that they can be relied on in an emergency.

Accurate and complete instructions are maintained for restoring backups. The policy is used to monitor the operation of backups and to prepare for backup failures.

In connection with the data systems listing, we describe for which systems we are responsible for the implementation of the backup. The organization’s own backup processes are documented and an owner is assigned to each. The documentation includes e.g.:

• which system is used for backing up data?
• how are the backups protected (encryption, physical location)?
• how long are the backups retained?

Restorability refers to how quickly personal data are restored to be available and accessible in the event of a physical or technical failure.

The operation of basic services (such as electricity, telecommunications, water supply, sewerage, heating, ventilation and air conditioning) will be monitored to ensure that their capacity covers business growth.

Equipment should be serviced at intervals recommended by the supplier and in accordance with the supplier's specifications.

For example, data processing equipment, as well as other important equipment, should be placed in the premises safely and with consideration. Placement should restrict unauthorized access to devices.

Maintenance performed on the equipment is recorded in a log, which contains information e.g.:

• of suspected and happened defects
• of preventive and remedial actions
• of checking the equipment after maintenance

Alarm systems monitor the level of key environmental conditions (e.g. temperature and humidity) that can adversely affect the operation of data processing equipment. There should also be a functioning fire alarm system in the environment.

With adequate backups, all important data and programs can be restored after a disaster or media failure. To determine your backup strategy, it is important to map / decide on at least the following:

• What systems are on our responsibility to back up?
• How critical is each data asset and how often, based on this, they need to be backed up and to what extent (partial or complete copy)?
• Where are backups stored and how are they protected?
• How long will backups need to be retained?
• What system is used for doing the back up?
• How backup media is destroyed reliably

The organization should take into account environmental threats that may affect the usability of systems as part of the risk assessment process and also as part of the information security incident process.

Environmental threats include, for example:

• Unfavorable weather
• Failure in environmental management systems
• Power spikes in electricity distribution
• Fires
• Water damage