What is cloud backup and how does it work?


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Cloud backup is also known as online backup or remote backup and it could be understood as a strategy for transferring a copy of a physical or virtual file or a database into a secondary location to preserve data in case of any equipment failure or catastrophe. Third-party service providers host secondary servers and data storage systems, charging the backup client a price based on the storage space utilized, data transfer bandwidth, number of users and servers, and the number of times the data is accessed.

Cloud backup will help to enhance the data security policies of a company without the workload of the IT personnel. Work-saving advantages are sufficient to compensate additional expenses in combination with cloud backup solutions such as data transfer charges.

What is the cloud?

Cloud computing is a general term that refers to internet-based hosted services. These services are different from traditional web hosting services on the cloud and are sold on demand meaning the customer could use as much of the service as required and it is managed totally by the service provider. Besides, Cloud could be a private or a public network. A public cloud self-services to people on the internet whereas a private cloud applies hosted services to a limited number of users.

How does cloud backup work?

In a company's data center a backup application duplicates data and stores it on different media or another storage system for easy access in any event of a recovery situation. While there are various options and approaches for offsite backup cloud backup will serve as the offside facility for many organizations. In any enterprise, the company may rely on the offsite server if it is hosting its cloud service provider but the main drawback of this method would be similar if the company will be using a service provider for managing the free cloud backup environment.

There are various options available for cloud backup, with services that can simply be integrated into a company’s existing data security procedure. Some varieties of cloud backup include:

Backing up directly to the public cloud

Organizational workloads can be stored by replicating resources into the public cloud. This method demands writing data directly into cloud providers. An organization will be using its backup software to build a copy of data before sending it to the cloud storage service.

The cloud storage provider will then give a location for the data, but not a backup program. In situations like this, the backup software should be capable of interfacing with the cloud storage device. Professionals should also have a look at the data security practices whilst using these public clouds.

Backing up to a service provider

In cases like this, the organization will be writing data for a cloud service provider offering backup services in a managed data center. The backup software used by the company for sending its data to the service provider could be provided as a part of the service or it may support special commercially available backup applications.

Choosing the cloud to cloud backup

These services are amongst the most popular offerings for cloud backup. The practice of backing up data already present in the cloud, whether it is produced using a SaaS application or data saved in the best cloud backup service.

As suggested by its name, a cloud backup service will copy data from one cloud to another cloud. Generally, the cloud-to-cloud backup service receives the software that handles its progress.

Using online cloud backup systems

Other hardware options make data backup to a cloud backup provider easier. These are all-in-one backup devices that feature backup software and storage space in addition to the backup server. Most of the appliances feature a seamless (or almost flawless) connectivity to one or more cloud backup services or cloud providers, making them as close to plug-and-play as backup gets. Quantum, Unitrends, Arcserve, Rubrik, Cohesity, Dell EMC, StorageCraft, and Asigra are just a few of the companies that provide backup appliances with cloud interfaces.

How data is restored?

Cloud backup services are generally constructed around a client software program that runs on a schedule specified by the amount of service ordered and the needs of the customer. If a client has agreed to daily backups, for example, the application gathers, compresses, encrypts, and sends data to the cloud service provider's servers every 24 hours. The service provider may only provide incremental backups after the initial complete backup to save bandwidth and time when transferring files.

The software and hardware necessary to safeguard an organization's data, such as Exchange and SQL Server applications, are commonly included in cloud backup services. The business recovers data using the same application whether a client uses its own backup program or the software offered by the best cloud backup provider. File-by-file, volume-by-volume, or complete backup restorations are all possible.

If the amount of data that has to be recovered is significant, a free cloud backup provider may send the data on a full storage array that the client may connect to its servers to recover the data.

Types of backup

There are several backup options to consider in addition to the different approaches to cloud backup. While cloud backup providers allow clients to select the backup technique that best suits their needs and applications, it's vital to know the distinctions between the three primary types.

  1. Full Backup: Every time a backup is started, full backups replicate the complete data set. As a result, they offer the best possible protection. However, most businesses are unable to make complete backups on a regular basis since they are time demanding and consume too much data storage space.
  2. Incremental Backup: Only the data that has changed or been updated since the last backup is backed up in incremental backups. This approach saves time and storage space, but it might make complete recovery more difficult. Because incremental backup uses fewer resources, it is a popular method of cloud backup.
  3. Differential Backup: Differential backups are similar to incremental backups as they only include changed data. Differential backups, on the other hand, only back up data that has changed since the last complete backup, not the last backup in general. This technique eliminates the problem of difficult restorations that incremental backups might cause.


Cloud backup solutions are more user-friendly. They copy all or most of the files and folders on your computer to their own cloud servers on a regular or monthly basis. An online backup service would resemble a straight line between your machine and the cloud server, rather than the spoked-wheel representation of a file-syncing service.

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