Let's take this example, whose 1 year long retention policy includes 12 monthly backups.
However, even for scenarios when you do need GFS full backups for the long-term retention, I would always recommend taking a closer look at ReFS/XFS repositories first and foremost, prior to investing into a deduplicating storage appliance.
In other words, you won't get much space savings with dedupe appliances receiving forever-incremental Veeam backup jobs with compression enabled. These vendors market 20x or even higher data reduction ratios, and will usually deliver on this promise with a couple of gotchas: their data reduction numbers do assume that the incoming data is uncompressed, unencrypted and includes a large number of periodic full backups. The perception here is that for long-term retention scenarios, it is essential to acquire a deduplicating storage appliance. Nevertheless, where space-less fulls really change the game is GFS backups. But even if you don't need GFS backups, there may still be the need for periodic synthetic fulls, for example to "seal" the previous full backup chain in order to make it eligible for offload to object storage. This quite literally means that GFS backups are "free" to create, because they take no physical disk space. The fast cloning technology we at Veeam are able to use with ReFS/XFS volumes comes with many benefits, but the biggest one is what we call " space-less" synthetic full backups. I felt there was the need to raise more awareness here, because I often find myself recommending them as the solution to various customers' challenges, and in most cases this feature comes as a surprise. All other trademarks or registered trademarks are the property of their respective owners.I wanted to talk about disk space efficiencies of ReFS/XFS backup repositories. Seagate, Seagate Technology, the Spiral logo are trademarks or registered trademarks of Seagate Technology LLC or one of its affiliated companies in the United States and/or other countries. Seagate reserves the right to change, without notice, product offerings or specifications. Actual data rates may vary depending on operating environment and other factors. Actual quantities will vary based on various factors, including file size, file format, features, and application software. Quantitative usage examples for various applications are for illustrative purposes. In addition, some of the listed capacity is used for formatting and other functions, and thus will not be available for data storage. Your computer’s operating system may use a different standard of measurement and report a lower capacity. * When referring to drive capacity, one gigabyte, or GB, equals one billion bytes and one terabyte, or TB, equals one trillion bytes.
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