If you want to ensure complete recovery of the data you stored in the Cloud, here are some aspects of Cloud backup and storage you will have to study and implement to ensure data recovery.

Data transmitted to the Cloud server may be corrupted. Cloud service providers help their customers reduce cost of storage and amount of data stored in the remote server by using compression and de-duplication technologies. While compression reduces the size of the data that is sent into storage, de-duplication reduces the number of files and folders that are sent to storage (by removing duplicates). In either instance, software algorithms are used to identify and isolate elements in the data stream that can be eliminated, removed or referentially stored. If the algorithm is imperfect in any way, the data streams that may be stored for ultimate recovery will be imperfect. The organization will not be able to reconstruct copies of the original data on recovery. Data may be partly recovered or not at all.  You need to make sure that the technology used by the Cloud backup service vendor does not corrupt your data.

Data may not be highly available and may become unrecoverable if service provider’s server is lost. If the Cloud service provider has not put in place a disaster recovery strategy for the remote data center, a data center failure at the service provider’s end can bring your business to a standstill. Data recovery may become impossible. Latency and poor bandwidth availability may aggravate data recovery difficulties. You need to ensure that your service provider has a disaster recovery plan in place, data is redundantly backed up and highly available to you at all times.

Data may become unrecoverable if the encryption key is lost. Data transmitted over the network to the remote server is encrypted at source using the user defined encryption key. Data at rest in the remote server continues to remain in the encrypted format. The data is decrypted at the point of recovery using the encryption key defined by the user. It follows that a loss of the encryption key will make it impossible to decrypt the data at the recovery point.  You need to ensure that the encryption key is secured by the Administrator and is available to you when the data needs to be recovered from storage.

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