How many of these facts you are aware of about data deduplication?

In an organization with a long list of important data, the success of the business not just depends on the quantity of the data but on its quality and accuracy. You can provide high-quality services to customers only when you have reliable data. If you are thinking about the factors that affect the reliability of the data, the major culprit in the list is duplicate data. This not only affects the quality of your data but also increases chances of your customers getting annoyed due to faulty marketing campaigns. Apart from customers, the duplicate data also affects your marketing strategies, business operations, return on investment and business profits.

Now the question is how to ensure that your database doesn’t include any repeat records or duplicate entries? For large scale organizations with a huge volume of data, deduplication software is the only way to avoid duplicate records. Due to its amazing benefits for the businesses, deduplication has become a hot trend in a past few years. But the irony is that even after so much popularity of data deduplication, many people are still unaware of many facts related to this. For those people, here are some interesting things they need to know about data deduplication.

There are a number of purposes deduplication can be used for

Many people think that the process of deleting duplicate data through software is limited to a few objectives and business. In reality, the process is used for a variety of purposes through different compression utilities like WinZip. There are many WAN optimization solutions as well which help business in data deduplication to support business in the maintenance of high-quality data.

Deduplication process can be CPU intensive

There are different functionalities of various deduplication algorithms. For instance some work by hashing chunks of data while others work by comparing the hashes for duplicates. Actually, the process completely depends on CPU. Whether the process is offloaded to an appliance or it takes place on a backup target, it doesn’t make a difference, but when the process occurs on a production server, the server’s performance gets affected directly.

Solid state drives can be used more practically through file system deduplication

If you want to reduce the amount of physical disk space in the virtual machines, you should try to perform deduplication process across virtual machines on a host server. This is a perfect option for the organizations to make the maximum usage of solid state storage in the more practical way with virtualization hosts. This further helps the business effectively use the solid state drives, which have a much smaller capacity as compared to the traditional hard drives. Though solid state drives have a smaller capacity, these are considered better over hard drives due to their better performance because of no moving parts.

Higher ratios are not always good

The ratio is the measurement of the effectiveness of data deduplication. A Higher ratio is considered good as it conveys a higher degree of deduplication, but at times it can be misleading. You can never deduplicate a file by shrinking it by 100%, which shows that higher compression ratios have diminishing returns.

There is rare possibility of hash collisions

You read about hashing of data in the above point where we discussed CPU intensive nature of data deduplication process. In the process, data is hashed and further the same are compared to decide the chunk that can be deduplicated. There are cases when two dissimilar chunks of data result in similar hashes and this situation is termed as a hash collision. The chances of hash collisions vary on the basis of the strength of the hashing algorithm used by the system. As the process is CPU intensive, some products use a weak hashing algorithm, in the beginning, to find out potentially duplicate data. However, in the latter state, a stronger hashing algorithm is used to confirm that the data is actually duplicate.

It is difficult to deduplicate media files

It is difficult to deduplicate unique data through deduplication process. There are situations or certain files where deduplication process is not that effective as much of the redundancy has already been deleted from the file. The biggest example of files in which data deduplication is difficult are media files. As the file formats in media files like MP3, MP4 and JPEG are already in compressed formats, it gets difficult to further deduplicate them.

You don’t save space with post process deduplication

Post process deduplication is done on a secondary storage target like the disk used in disk-to-disk backups. In this type of process, the data on one disk is written to the target storage in an uncompressed format. Deduplication process is performed later under a scheduled process. This fault in the process makes it difficult to save any space on the target volume. Further, based on the software you used, the target storage device might need more space for deduplicated data that the uncompressed data took on its own.

There can be various reasons behind duplicate records in the organization. But instead of wasting time on thinking about the roots and causes of the data duplication, the companies should think about the techniques to find a solution to the problem. Data duplication is one of the best solutions to make sales and marketing strategies more effective. Advanced data deduplication software has made it extremely easy for the businesses to get rid of the mess created by inaccurate and duplicate data. If you have a set of information that looks similar, invest in some customized and effective software to delete duplicate data.

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