Continuous data protection

Continuous Data Protection (CDP) – Almost Perfect Data Backup

Information is an asset that, like other significant business assets, is important to an organization's operations and, as such, requires the appropriate level of protection. In the increasingly linked work world, this is highly crucial.

However, this increased interconnection exposes information to a larger number and a wider variety of threats and vulnerabilities.

Innovative businesses know the need to back up their data, but they have a wide range of alternatives for backup techniques and frequency.

The main objective of any data backup is to guarantee that you can recover data and resume operations as soon as possible following a disruption, such as a software malfunction or data corruption.

Businesses increasingly rely on backup systems with continuous data protection (CDP) capabilities to reduce data loss as they accumulate more and more data that has to be constantly backed up.

Continuous Data Protection

A technique known as continuous backup or continuous data protection (CDP) backs up data on a computer system each time a change is performed. CDP allows system restoration to any earlier time by continuously recording data changes.

Continuous Data Protection (CDP) is a method for quickly backing up application data. The backup copy is constantly loyal to the original because each time a change is made to the data in the primary environment, the difference is noticed and copied in the backup copy. Other names for Continuous Data Protection (CDP) are real-time or continuous backup.

CDP Features:

  • Protect against damage from ransomware, malware, and other sources of data corruption
  • Rollback to restore a volume to an arbitrary point-in-time state within a 14-day timeframe
  • Generate known-good restore points
  • Operates independently of operating system or applications
  • No need to quiescent or interrupt applications
  • No host agents required
  • Easy to enable protection and create rollback volumes

True CDP Solutions vs. Near CDP Solutions

Solutions for Near CDP versus True CDP are based on recovery point goals (RPOs), or the maximum allowable time during which data could be lost due to an incident. As a result, continuous data security has evolved into two different types.

  • True CDP- A true CDP indeed backs up data after each modification. An organization can accomplish a Recovery Point Object (RPO) of zero thanks to this. True continuous backup solutions maintain track of all changes before an issue impacts your customer's employees. They save them in a change log on the CDP system, allowing you to roll back to any point before their data is corrupted or lost.
  • Near CDP-A system that performs planned backups on a regular basis but does so often enough to almost provide the impression of continuous data protection. These are typically limited to a certain number of backups so that any earlier versions would be overwritten.

CDP vs. Traditional Backup

The advantages of CDP make it more than just a full substitute for conventional backup; it serves as a vital part of a comprehensive backup and recovery plan. Because the program utilizes the operating system, not the archive bit, to rapidly detect changed files, CDP captures changes at the block level, resulting in speedier protection. Additionally, it knows what part of the file has changed and backs up only that part.

One may use CDP to simultaneously backup all file servers. However, instead of backing them up sequentially, waiting for one backup to complete before beginning the next, CDP eliminates backup windows, literally making the dreaded nightly backup window vanish because the backup is an ongoing process that offers continuous protection without interrupting production.

In Traditional Backup, backing up data on tape can make a firm's system inaccessible during the backup as the system being backed up becomes unavailable during the backup process.

Additionally, tape backup restricts the recovery point objective you may achieve (RPO).

Regular tape backups eliminate the risk of losing hours of data in the case of an emergency. Consider the scenario when a crucial system dies today at any moment. Your only option would be to restore yesterday's data.

Continuous Data Protection (CDP), which can help with recovery point objective (RPO) and recovery time objective (RTO) concerns, will help remove the backup window. CDP presents a major breakthrough in data protection and dramatically changes data protection focus from backup to recovery.

Therefore it is acknowledged that the traditional systems for backing up data are time-consuming. But, on the other hand, the introduction of continuous data protection (CDP) helps to reduce the recovery time objective (RTO) of data recovery.

How does it work?

Continuous data protection ensures the replica is always accurate to the original by detecting and reflecting any changes made to the primary system data in the backup copy. In addition, each modification is tracked, allowing IT teams to restore a system to any earlier state as necessary.

The "gamma," or any modifications to your data, is copied continuously from source to destination. Every write is recorded by genuine continuous data protection mechanisms, which are kept in a change log on the CDP system.

You can restore to that point or any earlier point before the data was damaged or lost since CDP preserves all modifications until the final write before failure.

Continuous data protection works in the background, recording each subsequent change within a predetermined time frame and saving it in a journal file after producing an initial complete backup of your data. You may quickly roll your system back to the desired point by reviewing the log and noting all the modifications until a failure.

Types of data that can be backed up

Continuous data protection systems can record and back up changes to any data type:

  • Files in your file system
  • Application data and files
  • Databases 

Mirroring, snapshot, or CDP

Professionals consider CDP the most cutting-edge and complete alternative for quick data recovery. Alternative technologies comparable to CDP can offer a high degree of security with little complexity and cost. One illustration is mirror backup, which records each update to the source data like CDP. The main distinction is that continuous backup enables you to access previous iterations of altered data and restore them. There is no such choice in the case of mirroring.

The snapshot, a quick virtual clone of a specified disk, is another highly regarded approach. A snapshot, which may be applied to single folders and whole file systems or databases, captures an image of the data saved at a certain time. This is a snapshot of the storage system at a particular moment.

In the case of a disaster, maintaining the system's state enables data recovery and system restoration to previously established working states. This is useful in a variety of circumstances.

Snapshots can be used, for example, to return to a point before the software was installed and removed, a system was updated, or hardware was upgraded.

Developers may use them to test and validate application code on virtual computers. However, because they do not safeguard data in the case of a disk failure, snapshots are not a dependable option. Additionally, taking too many screenshots might have a negative impact on system performance.

What VTG speaks for CDP?

Continuous data protection requires powerful storage technology. VTG offers powerful continuous data protection designed especially for your VMware environments. It boosts data resiliency by allowing you to recover your backup from previous points in time, up to a maximum of four hours before.

Would you want to have a fireside chat with us? Then, don't hesitate any longer; get in touch with our professionals right now to learn more about the finest options for your business.