what is data deduplication

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In-depth understanding of data compression and deduplication

[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

Hyper-V Server data deduplication technology

Hyper-V Server data deduplication technologySwaiiow heard that the new technology in Windows Server 2012 is called Deduplication, which is said to save disk space significantly, and let's look at what

Zfs and data deduplication

Http://hub.opensolaris.org/bin/view/Community+Group+zfs/WebHome Https://blogs.oracle.com/bonwick/entry/zfs_dedup Zfs and data deduplication What is deduplication? Deduplication is

Windows 8.1 Data deduplication-Planning for Deployment (II)

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 bec

Data deduplication 2---Research on high performance duplicate data detection and deletion technology some fragmentary knowledge

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, reliabil

What is the big data talent gap? Is Data Big Data engineers well employed? This is what everyone cares most about when learning big data.

; direction 3: Big Data O M and cloud computing. If you are proficient in any direction, there will be no space in the "front (money)" way. What is the big data talent gap? Is Data Big Data

Data deduplication for Windows Server 2012

In Windows 2012, you can enable data deduplication for non-system volumes. Deduplication optimizes volume storage by locating redundant data in the volume, and then ensuring that the data is saved in only one copy of the volume. T

Windows 8.1 Data deduplication-concept (i)

Function descriptionData deduplication refers to finding and deleting duplicates in the data without affecting their fidelity or integrity. The goal is to change (32-128 KB) small chunks by splitting the files into sizes, identify duplicate chunks, and then keep a copy of each chunk to store more data in a smaller spac

Big Data Learning Ten--mapreduce code example: Data deduplication and data sequencing

text line=new text (); Each row as a dataprotected void Map (Object key, Text value, Context context) throws IOException, interruptedexception{Line=value;Context.write (Line,new Text (",")); Key is unique, and as a data, the implementation of deduplication}}Static class Myreduce extends reducerprotected void reduce (Text key,iterableContext.write (key,new Text (

Windows Server 2012 Data deduplication

Storage has been a major drag to reduce operating costs, although the cost of storage has been decreasing in recent years, but the growth rate of enterprise data is far more than the reduction of storage costs, so how to reduce the pressure on the storage to the enterprise is a big test for IT staffMicrosoft has brought a surprising feature in Windows Server 2012

How to count the data after deduplication in the MongoDB collection

Label:Let's say we have a MongoDB collection, take this simple set as an example, we need to include how many different mobile phone numbers in the collection, the first thought is to use the DISTINCT keyword, db.tokencaller.distinct (' Caller '). Length If you want to see specific and different phone numbers, then you can omit the length property, since db.tokencaller.distinct (' Caller ') returns an array of all the mobile phone numbers. but

When deduplication is, temporary processing is disabled, and 80

When deduplication is, temporary processing is disabled, and 80 Original Works are from the blog of "Deep Blue blog". You are welcome to repost them. Please indicate the source when you repost them. Otherwise, the copyright will be held legally responsible. Deep Blue blog: http://blog.csdn.net/huangyanlong/article/details/46041735 Temporary handling of 80 millio

MySQL data deduplication prevents insertion:)

INSERT into table (ID, name, age) VALUES (1, "A", +) on duplicate key update name=values (name), Age=values (age)/* Insert Data: If there are duplicates, select Update; */Insert ignore into ' testtable ' (' Mpass ', ' Pass ') select Mpass,pass from Rr_pass_0 limit 0,1000000replace into ' testtable ' ( ' Mpass ', ' Pass ') select Mpass,pass from Rr_pass_0 limit 0,10Set PRIMARY key: Discard if duplicate data

Automatic data segmentation during deduplication

Deduplication has been widely used in data backup. We found that for backup applications, we can delete and compress data by repeat data about 20 times, thus saving a lot of storage space. How can I retrieve duplicate data blocks? If byte-level comparison

Lduan Server 2012 Data deduplication on DFS namespace service (12)

deduplication DFS namespace service on (12) _ Page _4.png "alt=" Wkiol1gwjs7dfjnkaadm-nn74dc676.png-wh_50 "/>650) this.width=650; "Src=" Http://s1.51cto.com/wyfs02/M02/89/85/wKiom1gWjTSAPTxuAAz-X1fzs84231.png-wh_500x0-wm_3 -wmp_4-s_2196909421.png "style=" Float:none; "title=" Lduan Server 2012 Data deduplication DFS namespace service on (12) _ Page _5.png "alt="

[Easy moment] practical project development (2) list data deduplication data append and cache, easy moment Project Development

[Easy moment] practical project development (2) list data deduplication data append and cache, easy moment Project Development Open-source control PullToRefresh is introduced to refresh the list from the drop-down menu. Each pull-down refresh will send a request and return json information from the interface. How to r

Windows Server 2012 Data deduplication Enhancements

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

Is there a two-dimensional array merge deduplication algorithm whose complexity is O (n )?

Is there a two-dimensional array merge deduplication algorithm whose complexity is O (n )? Is there a two-dimensional array merge deduplication algorithm whose complexity is O (n )? Reply content:

"Problem finishing" MySQL massive data deduplication

Tags: mysql database go heavyBecause the work needs to carry on the data to weigh, therefore does the record, actually is very small white question ....In fact, in terms of data deduplication, the best thing is to design the program and database when the

Oracle Data deduplication

Tags: tar where table insert into strong creat sele Tinfirst, the total data deduplication methodThe idea is to first create a temporary table, and then insert the table data after distinct into the temporary table, then empty the original table data, and then the temporary

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