What is Disaster recovery (DR)? This is a section of security preparation which has the function of protecting an organization from any malicious activity. The disaster recoveryenables the organization to sustain or rapidly resume the normal functioning after a disaster.
Three common cloud DR scenarios:
talking of this, it is the simplest form of cloud DR; that resembles tape backup. This type guarantees a backup which is basically a file server data that can be reestablished or retrieved from the data center at the cloud supplier, when needed. Clear concerns of this particular scenario are network latency and data repair performance.
Backup suppliers avail WAN optimization, compression, de-duplication and other tactics to reduce the restore time, though another important aspect when considering performance is the physical distance that exists between secondary and primary sites.
Also, there exist another option of backing up data locally for the purpose of quick restore and possess a secondary backup at the cloud to act as another coating of protection. If data is to be backed up in cloud locally, then compliance and security are considerations to be taken into account when dealing with data encryption and user authentication that is at rest or on transit.
Data and Submission Failover:
Usually, this is done using IaaS providers, like DataPipe, though there exists other readily available solutions which are third-party. Here, a second utilization of the submission runs constantly in the cloud that has replicated data to the cloud supplier.
On the other hand, both application cases can function in the cloud even if they have distinct cloud providers. Suppose a failure occurs or the system shuts down in the main application for the purpose of maintenance, the application failover directs the users towards secondary site application and data.
For a smooth functioning of this scenario, it’s vital that there occurs a matching at both sites in terms of updates, software and hardware. Also, latency and bandwidth are very crucial too because users may develop the need to instantly access data and secondary data center application.
In this particular scenario, there is a complete replication of the virtual machine images with VMware, to the cloud, which also includes data. This scenario can be of use in cases where there is no virtualization of primary deployment.
The advantage of it is that there is no need for marching of hardware and neither exists the need to track and manage updates at both ends. Here, cloud virtual image becomes inactive almost all the time and only becomes active and accessed when primary site description is inaccessible.
Apart from the capabilities and features of DR, there needs to be consideration of cost, security, latency, connection distance and bandwidth on all the three scenarios. Above all, three is need to consult a professional cloud consultant to advice you before you install a cloud backup and recovery solution for your business.