deduplication vs compression

[Guide]What are the differences between data compression and deduplication? In practice, how can we apply it correctly? I have not studied the principles and technologies of Data Compression before, so I did some homework, read and sort out relevant materials, and compared and analyzed the data deduplication technology

Q: What are the advantages and disadvantages of the software-based deduplication and hardware-based deduplication products? A: software-based deduplication aims to eliminate source redundancy, while hardware-based deduplication emphasizes data reduction of the storage system. Although bandwidth compensation cannot

more data in less physical space. It can achieve greater storage efficiency than single-instance storage (SIS) or NTFS compression capabilities. The Deduplication feature uses sub-file variable-size chunks and compression, and the general file server has a total optimization rate of 2:1, while the optimization rate for virtual data is up to 20:1.2. Scalability a

research on high performance data deduplication and detection and deletion technologyHere are some fragmentary data about the re-deletion of things, previously summarized, put on can communicate with you.The explosion of 1 data volumes brings new challenges to the capacity, throughput performance, scalability, reliability, security, maintainability, and Energy management of existing storage systems, eliminating redundant information and optimizing sto

Python list deduplication method you should know, python list deduplication Method Preface List deduplication is a common problem when writing Python scripts, because no matter where the source data comes from, when we convert it into a list, the expected results may not be our final results, the most common thing is that the Meta in the list is repeated. At this

Disable Windows deduplication and windows deduplication Deduplication can reduce disk usage, but improper use may also increase IO. In addition, this function also blocks the hard disk. Therefore, when the hard disk usage is high, it is also difficult to fragment, So you sometimes need to disable the deduplication fun

This article mainly introduces the sample code for de-duplication and de-duplication of JS arrays. If you need it, you can refer to it for help. Method 1: deduplication The Code is as follows: ScriptArray. prototype. distinct = function (){Var a = [], B = [];For (var prop in this ){Var d = this [prop];If (d = a [prop]) continue; // prevents loops to prototypeIf (B [d]! = 1 ){A. push (d );B [d] = 1;}}Return;}Var x = ['A', 'B', 'C', 'D', 'B', 'A', 'A',

Array deduplication Array, Array deduplication Array var aee3=[31,42,13,19,5,11,8,13,40,39,1,8,44,15,3]; Array.prototype.unqu2=function(){ this.sort(); var arr2=[this[0]]; for (var j = 1; j There are a lot of de-duplication methods on the Internet, and the most stupid is the second method, and the best efficiency is the third one.

Simple example of php array deduplication (one-dimensional and two-dimensional array deduplication) $ Aa = array ("apple", "banana", "pear", "apple", "wail", "watermalon "); $ Bb = array_unique ($ aa ); Print_r ($ bb ); ?> Output result: Array ([0] => apple [1] => banana [2] => pear [4] => wail [5] => watermalon ).2. duplicate items of two-dimensional PHP

PHP two-dimensional array deduplication algorithm, PHP two-dimensional array deduplication Algorithm Requirement The following two-dimensional array is available: Array (8) {[0] => array (2) {["name"] => string (4) "name" ["value"] => string (6) "qingye"} [1] => array (2) {["name"] => string (5) "phone" ["value"] => string (11) "13812341234"} [2] => array (2) {["name"] => string (12) "fileds_507 []" ["value

. optimized file: a file stored as a re-analysis point that contains pointers to maps of individual chunks in a chunk store that are required to restore the requested file. Block Storage: The location where the optimized file data resides. Additional free space: optimized file and chunk storage is much smaller than the space used before optimization. Practical applicationTo address the growth of enterprise data storage, administrators want to consolidate multiple servers and set

interval, the higher the deduplication ratio.4. How can I know whether deduplication is effective for my data?The de-duplication effect mainly depends on the following aspects: a. The less data changes, the more obvious the de-duplication effect. B. Can the data be effectively compressed, compression Technology is usually used together with

I. Planning the deployment goalsData deduplication for Windows 8.1server 2012 is designed to be installed on the primary data volume without adding any additional dedicated hardware. This means that you can install and use the feature without affecting the primary workload on the server. The default is non-invasive because they allow the data "lifetime" to reach five days before a particular file is processed, and the default minimum file size is up t

Capacity optimization. Data deduplication in Windows Server 2012 can store more data in a smaller physical space. It achieves higher storage efficiency than previous versions that use single Instance storage (SIS) or new technology file system (NTFS) compression. Data Deduplication uses sub-file variable-size chunking and com