Safeguarding Data with Backup Policies and Fault Tolerance

Protecting your data is paramount in today’s digital landscape. In this article, we delve into the critical aspects of backup policies and fault-tolerant systems, essential for safeguarding your valuable information. Whether you’re a business owner or a tech enthusiast, understanding these concepts is crucial for maintaining data integrity. Learn more about backup policies and fault-tolerant systems and how they contribute to data security!

Safeguarding Data with Backup Policies and Fault Tolerance

Backup Policies

This section lists errors related to an incorrect approach to backing up data. Absence of a backup copy of valuable data is the most common reason for contacting our company. Recognize yourself? You are our future customer!

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No Systematic Backup Strategy

Having no systematic backup is the most obvious reason of having to resort to data recovery tools (such as those provided by our company). Occasional backups will rarely help organizations and even individual users. Fresh *.avi, *.ppt, *.pst, *.tiff files are often the most important ones. Without a periodic daily backup, your backup strategy is incomplete.

No Backup Restoration Strategy

Having a backup strategy alone is not enough. Even if you back up your data daily, you must have a quick and easy way to restore information from the backup. One of the common issues with our clients is losing access to system boot disk, the very disk that contains backup and restore tools. Without these tools, customers are unable to restore data from their backups – even if they have backup files stored elsewhere.

Backup Implementation

Having a perfect daily backup and uninterrupted access to backup restore tools is not enough. Physical location of your backups as well as hardware media matters a lot.

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Keeping Backups in the Same Office or Building

If you keep your backup system or backup hard drive in the same office or building with your main system, the very event rendering your main system unusable will most probably destroy your backup as well. We had more than one case of customers losing their backups after a fire or electrical problem together with the main system.

Using Improper Backup Media

Are you reusing old tapes or have a dedicated external hard drive to store backups? Make sure they are reliable enough to let you read your data if you need to restore it! In addition, using identical hard drives in the main system and as a backup is a very bad idea, as hard drives from the same batch are very likely to fail one after another. Making backups to rewriteable optical media is also not the brightest idea, as rewriteable DVDs demonstrate much shorter shelf life compared to single-write media. And even single-write DVD-R discs must be stored properly in order to keep information.

Fault Tolerant Systems

Building a single fault-tolerant system is not enough to ensure data integrity.

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Over-relying on RAID Arrays

Redundant or even mirrored RAID arrays will definitely increase data storage reliability. However, relying on a RAID array alone to keep your data safe is an extremely bad idea due to multiple factors, some of which are listed here as mistakes #3 and #4. Indeed, RAID arrays are often comprised of identical hard drives (which are likely to fail all at once), all of which are kept in a single rack or PC (which is prone to physical and electrical damage). In a word, a RAID array is no substitute to a good backup policy.

In the next article, we will consider the role of the human factor as a reason for losing important data.


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Oleg Afonin

Author: , Technical Writer

Oleg Afonin is an expert in mobile forensics, data recovery and computer systems. He often attends large data security conferences, and writes several blogs for such resources as, Elcomsoft and Habr. In addition to his online activities, Oleg’s articles are also published in professional magazines. Also, Oleg Afonin is the co-author of a well-known book, Mobile Forensics - Advanced Investigative Strategies.

Vladimir Artiukh

Editor: , Technical Writer

Vladimir Artiukh is a technical writer for Hetman Software, as well as the voice and face of their English-speaking YouTube channel, Hetman Software: Data Recovery for Windows. He handles tutorials, how-tos, and detailed reviews on how the company’s tools work with all kinds of data storage devices.

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