Data migration is the process of transporting data between computers, storage devices or formats. It is a key consideration for any system implementation, upgrade or consolidation. During data migration, software programs or scripts are used to map system data for automated migration. Data migration is categorized as storage migration, database...
Fault tolerance is the way in which an operating system (OS) responds to a hardware or software failure. The term essentially refers to a system’s ability to allow for failures or malfunctions, and this ability may be provided by software, hardware or a combination of both. To handle faults gracefully, some computer systems have two or more duplicate systems.
Fault tolerance software may be part of the OS interface, allowing the programmer to check critical data at specific points during a transaction.
Fault tolerance can include:
In general, 100% fault tolerance can never be achieved due to cost constraints.
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