Cloud backup at remote storage also has its own issues like connecting issues to cloud might delay the transactions over the network limitations, cloud provider and customer would have different standards of security practices and policies that might provide third party to intervene and access the sensitive data. Backup drives on local machines would allow malware to hard disks which can corrupt the existing data on hard drives and leads to loss of data or expose the data to outside world. Portable drives which are used to backups can also be lose data by spreading malware while backing up or loss data by theft or misplaced. (P. Ruggiero, M. A. Heckathorn. 2012)
In terms of backup media, Data Deduplication is a process that removes duplicate data. Its implementation approaches are Block level, File level and Application level, Implementation phases are In-line and Post-backup & Implementation places are at Agent side and Server side. Securing backups is directly proportional organizational expenses, more data, more headache as it might include sensitive information like consumer personal information and financial information. Data transfer to cloud storage expenses are also high in terms of secured backups that company need to bear dividing it up from customer service fee. Deduplication reduces these problems to integrate it to cloud storage backup. (CH, A., & R, K. V. 2013)
Basic understanding says the offsite storage has many advantages over onsite backup which are, multiple copies of data at multiple offsite locations can be used for disaster recovery in both natural and artificial disasters, it also allows additional security at offsite location with standard encryption and unknown host of servers and finally unlimited data storage but for a price that companies should bear that cost at customer security as preference. (Chan, R. 2016)
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