Data Backup And Recovery Strategies

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Have you ever had that awkward moment at the Apple Store: “Sorry, but this is a fan. Backup regularly

The constant awkward silence? Losing data without a backup can destroy months or years of work, even your personal life.

Data Backup And Recovery Strategies

Data Backup And Recovery Strategies

The consequences of data loss are very serious for organizations: losing data for hours or minutes can destroy an organization. Recent research shows that the average amount of data lost to a UK company has risen to £1.9m per year, or £71 per file.

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If there is a misconfiguration in the online store’s IT infrastructure, online shoppers will not be able to access the site until it is fully restored. Implementing a data backup or recovery plan could have prevented this event and significant financial losses from the business.

To reduce the risk of data loss, it is important to implement a proper data backup and recovery strategy for your organization.

What you need to know is that in short data can be lost for various reasons, e.g. If accidentally or maliciously deleted by malware. You need a data backup and recovery strategy so that data can be recovered if lost. For an organization to find the right strategy, it is important to set clear goals about what is acceptable. The organization should set targets based on previous risk analysis. There are various storage media available in the market for backups, depending on the needs, you can use them and write them according to different methods. Many companies routinely replace limited storage media in a grandfather-father-son backup format. Data security should not be neglected when it comes to backups, as new technologies such as cloud backups pose challenges for organizations. Definition in this article: What is ‘data loss’, ‘data backup’ and ‘data recovery’? Data loss Data backups Data recovery How to find the most appropriate backup strategy for your organization’s media storage: Which media is right for which application? Backup Types – Available Backup Methods Full Backup Incremental Backup Incremental Backup Continuous Backup Consistency Policy How do I ensure the security of my backup data? Summary: “No Backups, No Sympathy” Definition: What is “data loss”, “data backup” and “data recovery”? Data Loss Data loss occurs when an organization loses data that is essential to the operation of the business. Such loss can be caused by: Accidental deletion Accidental misconfiguration Corrupted data used in hacker attacks Malware Defective hardware Lost hardware Destruction of storage media by fire, water or other force of nature (2021 ), 56% of respondents said they experienced data loss at least once. Data Backup There is a concept of data backup so that the consequences and costs of data loss can be kept as low as possible. Backup is used to restore lost work data. Data is restored from a specific recovery point. There are two variables that determine the impact of data loss: Recovery PointObjective(RPO): An RPO is a measure of the time from a comparable event causing failure, disaster or loss. RPO measures the amount of time your data has been stored in usable form, usually the most recent backup. Recovery processing typically preserves data changes made before the disaster or failure. RPOs can also specify how much data your business can lose before it suffers significant damage, known as loss tolerance. Recovery Time Objective (RTO): RTOs specify the time an application can go down without causing significant damage to the business and the time it takes for the system to recover from the loss. This recovery process includes the steps IT must take to return the application and its data to a pre-disaster state. For high-priority applications, the RTO can be safely exposed in seconds if the IT department has invested in failover services. RTOs should prioritize your IT department applications based on their priority and risk of losing business. IT allocates the appropriate amount of your business’s resources—time, money, and IT infrastructure—to these applications. A smaller RPO and RTO, with a more accurate backup and recovery strategy, means less negative impact in terms of data loss. That’s why companies usually carry out a risk assessment as part of a business impact analysis so that they can make a financially viable commitment. (“In a worst-case scenario, how much data loss can we handle?”) Data recovery Data recovery describes the process of restoring backup data. Of course, it’s not enough to just create a backup, you also need to be able to access it. The recovery time target varies significantly depending on the storage media and the data recovery process. You should regularly audit your data recovery process for compliance with information security standards (ISO 27001, TISAX®). This test simulates data loss and recovery according to the data process on a particular computer. Testing verifies whether the RPO and RTO can be met and whether changes need to be made to improve the process. The definition of archiving is when data is stored at a fixed point – for example, when a company wants to record accounting data at the time of signing a contract with an investor. While backup is useful for data protection and data recovery, archiving (also) meets legal requirements, for example to meet retention periods set for tax-related data. While we recommend overwrite-resistant media for archiving, recovery doesn’t need to be particularly fast or easy. As mentioned above, you should be aware of data recovery standards as per ISO 27001. You can find more information in our white paper on this standard. We’ll introduce you to common storage media and backup types and how to find the best backup strategy for your organization. Before you decide which strategy is best for your needs, you should ask yourself the following questions: How much data do I already have or how much data am I generating every day that I need to recover? At what point in time in the past can I safely recover data (RPO)? How quickly should data be recovered (RTO)? For example: A company produces an incredibly large amount of data every day that needs to be retrieved. However, there is no rush to recover data and in worst case it may take days. This affects the storage medium (magnetic tape may be appropriate here) and the type of backup (probably incremental backup in this case). Storage media at a glance: Which media is right for which application? Here’s an overview of the most popular storage media for backups: Magnetic tape is durable and reusable (ie, replaceable). However, recovering data from magnetic tapes takes considerable time. Despite technological progress, magnetic tapes are the best choice when it comes to very long-term backups of large amounts of data. For example, so-called linear tape open tapes – if you store them properly – can last up to 30 years. Optical storage media such as DVD and Blu-ray are still popular, especially for personal purposes. If the media is properly selected and stored, it can last for over 50 years. While a single magnetic tape can store up to 6,000 GB of data, a Blu-ray disc can only handle 25 GB. Many people use hard drives these days for continuous hard drive backup. Thus, data is stored continuously in a naturally large disk array. This option allows for quick and relatively secure backups. Cloud backups are especially popular because, in the event of an emergency, they allow automatic and complete removal of data from the physical source (higher level: in the event of a building fire, data can be immediately uploaded from a local server to a cloud). In the same way, the data will be restored quickly in case of recovery. However, that amount of data has to be matched by an internet connection. An important note: Anyone using cloud providers for backup should use dedicated backup services that ensure redundancy. A data center in Strasbourg caught fire in early March 2021 and many customers lost their data beyond repair, an example of where things went horribly wrong. Backup Types – These are the available backup methods Depending on your storage capabilities and data backup software, different backup types are suitable for you: Full Backup You can back up your entire database at specified time intervals using this method.

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