6/21/2023 0 Comments Spideroak deduplication![]() ![]() ![]() If so, the solution sends only the hash value otherwise, it sends the block itself. Most advanced modern backup solutions provide variable-size block deduplication, adapting the block sizes to maximize the deduplication ratio, while reducing RAM and CPU usage.īefore sending the data block to the storage, the backup solution queries the storage system to determine whether the block’s hash value is already stored there. The fixed-size block deduplication has proven to be ineffective – on small block sizes, it consumes a lot of RAM and CPU and on large block sizes, it provides much lower deduplication ratio. Your backup solution may support blocks of fixed size or variable size. This fingerprint or checksum is often called a hash value. When performing a backup to a deduplicating storage, the backup solution calculates a fingerprint or a checksum of each data block. Incremental backups where the data does not change but the location of data does change for example, when data, such as a file, circulates over the network or within one system and appears in a new place.Incremental backups of similar data from different sources for example, when you deploy OS updates to multiple systems and run an incremental backup.Full backups of systems that you previously backed up to the same deduplicating storage.F ull backups of similar data from different sources, such as operating systems (OS), virtual machines (VMs), and applications deployed from a standard image.A storage location where deduplication is enabled is called a deduplicating storage.ĭeduplication can operate at a file-, sub file- (pieces of files), or block-level and usually works with all operating systems supported by your backup solution.ĭeduplication produces maximum results when you create: When you enable deduplication, your backup solution deduplicates the backups and saves them to a managed storage. Deduplication also reduces network load, because duplicates of data previously backed up is not even transferred over the network to storage. If a backup solution transfers and stores only unique data, the company can decrease their storage capacity and network requirements by up to 50 times! With deduplication, your organization can realize these savings.īackup deduplication minimizes storage space by detecting data repetition and storing the identical data only once. Storing and transferring the same data multiple times to the same storage is a waste of time and resources. Yet, every desktop has the same Windows operating system, same applications, and often numerous copies of the same data. At this rate, a full backup will take from two to three weeks to transfer 10 to 75 TB of data over a 100 Mbit network. A 100 Mbit (megabit) network can transfer only 10 megabytes of data per second. The next, even bigger challenge is to back up the PCs to this storage. Let’s assume this company invests in expensive storage for their PC backups. Eventually, this company may need to acquire as much as a one p etabyte of storage for PC backups alone. With a 2:1 compression ratio, the backup administrator needs to provision between 10 to 75TB for every full backup, plus have more space for incremental and differential backups. PCs contain from 20 to 150TB (terabytes) of data. An average laptop can hold from 50 to a few hundred gigabytes of data on the hard disk. The “sheer volume of data” was given as one of the primary reasons why.įor example, let’s look at a company with 400 employees who use desktops and laptops. However, 75 percent of small-to medium-sized businesses (SMBs) surveyed by Acronis and IDC (International Data Corporation) admit that their data is not fully protected. ![]() Otherwise your company can lose money, reputation, time - your entire business can even shut down. You must protect and back up all this data. Every 10 minutes, humanity creates as much data volume as was created from the dawn of civilization until the year 2000. In 1990, the hard disk of a personal computer was 10 megabytes. ![]()
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