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IB HL Computer Science | 1.1.13 | Describe a range of methods that can be used to prevent data loss
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Back-up
Removable media: Cheap, simple to install (USB), large capacity, easy to move offsite.
Offsite: Take back-ups offsite in case of disasters like fire or flooding.
Online: Always available, need internet connection, possible security risk.
Antivirus: Prevent malware from deleting/editing data.
Failover and redundancy:
A redundant system is a clone of an existing that is kept up-to-date in case the primary system fails
Failover is the process of detecting a failure of the primary system and switching users to the redundant system
This is often done with large enterprise servers because of the high cost that would be associated with a server outage
Removable media: Cheap, simple to install (USB), large capacity, easy to move offsite.
Offsite: Take back-ups offsite in case of disasters like fire or flooding.
Online: Always available, need internet connection, possible security risk.
Antivirus: Prevent malware from deleting/editing data.
Failover and redundancy:
A redundant system is a clone of an existing that is kept up-to-date in case the primary system fails
Failover is the process of detecting a failure of the primary system and switching users to the redundant system
This is often done with large enterprise servers because of the high cost that would be associated with a server outage
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