There are few reasons of the importance of backup for Accounting Information System (AIS). The meaning of backup is making copies of data which may be used to restore the original after a data loss event. Firstly, backup is important because of hard disk failure.The capacity of data and the amount we could lose if our disk fails are high. The major problem is we will never know when the failure occurs and loss will occur at the worst possible time. In addition backup system gives us immediate and automatic protection from unpredictable disk failures.
Moreover, the other importance of backup is data corruption. Large number of people are unaware that their data is corrupt until their uncorrupted backups have been overwritten. Data corruption happens for many reasons but application crashes are the most common. Regularly running disk and database utilities is a good idea if we want to catch data corruption early which is a key to mitigating the damage.
Other than that, the other reason is free up disk space. The steady growth in the size of application software and related data can’t be stopped therefore it can allow to offload some of the less used files from the hard disk to a secondary storage medium like DVDs. Furthermore, removing those inactive files can open up the hard disk for new programs or growing data files. Inexpensive DVD or tape cartridges are a sure way to archive the programs and data while still keeping them accessible when it is needed.
Lastly, fire, flood and theft are one of the reasons too. Many of us would not have a thought about it. As a conclusion, we can say that backup is really important for us to prevent important data loss, hard disk failure and many more.
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