Deduplication is the finding and removal of duplicate files.

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How to Enable Data Deduplication in Windows 8.1 client

How can i enable Data Deduplication in Windows 8.1 x64 client. http://weikingteh.wordpress.com/2013/01/15/how-to-enable-data-deduplication-in-windows-8/ The above link discusses the same for a ...
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1answer
177 views

ZFS + dedup: copy many small files fast

I'm running a ZFS backup server (with deduplication) to backup websites and store them with retention. To do this, I transfer all files to the backup server during the first backup, and make a copy of ...
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0answers
19 views

Efficient removal of duplicate records across multiple Excel sheets

I have a workbook with 2 sheets. Sheet 1 has 3 columns (1A, 1B and 1C) and sheet 2 has 2 columns (2A and 2B). Now I need to delete rows from sheet 1 if 1A and 1B match any row in sheet 2 (i.e. 1A=2A ...
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2answers
836 views

Two PDF files, identical except for possibly different cover pages — how to remove duplicates?

I have a bunch of PDF files which are articles downloaded from various Journal websites. The problem is, some of these PDF files are duplicates of one another. However, if I run a basic duplicate file ...
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1answer
25 views

Is it possible to perform Deduplication recursively?

If anybody is familiar with the concept of Deduplication (If not,read link on wikipedia) http://en.wikipedia.org/wiki/Data_deduplication Is it possible to perform Deduplication recursively i.e. ...
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1answer
37 views

In Windows, is there any software to prevent duplication of files in a folder?

Let's say I have two files c:\f1\data.txt and c:\f2\data.txt. If I give the command copy c:\f2\data.txt c:\f1\data\ I will receive a warning about the potential owerwriting. I will receive the ...
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2answers
19 views

Virtual folder combining a read-only and read-write directory (file deduplication)

Is it possible in linux to have a directory that contains all the contents of another directory (in a read-only fashion) but you are able to write to the directory without it affecting the 'parent' ...
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34 views

Which are good compression formats for an eternal version of a logfile? [closed]

I'm experimenting with logrotate and trying to set up an eternal version of a high volume logfile, e.g. /var/log/syslog, i.e. all entries should be preserved from the second the OS (Ubuntu 14.04) ...
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2answers
331 views

Deduplicate Files inside multiple .tar.gz archives

I take a nightly backup from my Webhosting service as .tar.gz. The Data changed is very little each night (<10MB). I would like to archive these files and deduplicate (solid compression) files ...
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0answers
19 views

Is it possible to deduplicate a mounted truecrypt volume using Windows 2012?

An external volume has been encrypted using Truecrypt. Is it possible to run deduplication using Windows 2012 once the volume has been mounted?
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15answers
15k views

Which duplicate files and folders finders exist for Windows? [closed]

I need a free duplicate file finder/remover app, with ability to find duplicate files/folders by name and/or by size and to remove one of duplicates.
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3answers
369 views

How to deduplicate 40TB of data?

I've inherited a research cluster with ~40TB of data across three filesystems. The data stretches back almost 15 years, and there are most likely a good amount of duplicates as researchers copy each ...
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2answers
495 views

Deduplicate files using the command line in OSX Lion

I am using OSX 10.8.4 and would like to remove duplicate files in a single flat directory if an md5 hash matches. I have looked up several answers but none of them work for me, I think because of ...
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1answer
113 views

Painless way of consolidating files across multiple machines/OSes

Just bought a NAS. So I thought I'd get all our photos, media files and pdfs consolidated, de-duplicated, de-junked and virus-checked and stick them all on it. We have 3 laptops, one running Windows, ...
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2answers
463 views

duplicate file/folder finder application for windows 7

I got old archives of my old computers, Now I decided to merge all these folders and organize them, I got many backups so I need app that will find duplicate files and delete / move them, any ideas?
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77 views

Duplicate Deletion Script does nothing

An associate of mine wrote a script for me that should theoretically delete files that have the same name, regardless of their file type. Specifically, it checks mp3, m4a, wma, wav files. However, ...
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1answer
73 views

Deleting all but latest revision of a file

So I have these massive lists of drawings that I've done for work and I'd like to be able to dump them all into one folder and run a batch that would delete all of the older revs and leave the highest ...
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1answer
334 views

What is the best way to merge two sets of files, but for duplicates to select the older file in Windows?

I have stumbled into a dumb usage case. I want to merge two folders in a particular way (I guess these are called folders now, I still think of them as directories, but whatever). The folders have ...
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3answers
68 views

Is there such a thing as a file hosted container which deduplicates data held within?

Background I have backups of a website which stores all of it's data into a single file. This file is several gigs large and I have many different backups of this file. Most of the data within is ...
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0answers
24 views

Is there a diff-like tool that searches the directory for existence of the file or folder?

In an attempt to de-duplicate the data on my system, I've used tools such as Gemini for finding duplicate files across directories and diff tools like Kaleidescope for understanding how the ...
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0answers
179 views

Deduplication vs Incremental Backups

I need good arguments for that question(s): Why would you take a daily full backup and deduplicate the volume, instead of taking a single full backup and afterwards continuing with incremental ...
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4answers
2k views

Is there a compression or archiver program for Windows that also does deduplication?

I'm looking for an archiver program that can perform deduplication (dedupe) on the files being archived. Upon unpacking the archive, the software would put back any files it removed during the ...
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38 views

mv backup but instead of creating tilde directories, create tilde files in subdirectories?

I have 2 deep directory structures that are (probably) identical and I want to end up with a single one, but not auto-resolve existing conflicts (I'm guessing rsync would clobber something). I just ...
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3answers
4k views

How to remove duplicate row based on some columns

I have a excel sheet which contains duplicate I want to remove a row if its A C D E F columns are same (Ignore B while calculating duplicates but remove it while removing a row) At the moment it ...
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2answers
160 views

Find unique files across 2 drives

I'm trying to compare 2 volumes, which mainly have the same content, but in completely different folder structures. (Around 2 million files.) I want to see which files are ONLY in 1 folder, not the ...
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47 views

Copy files to location, skipping duplicates (in source and dest. location)

I have an external hardrive I think is running down breaking (unable to delete some files from it). I copied a bunch of files over already but ran out of space. How do I dedup while copying/How to I ...
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1answer
65 views

Deduplicating Multiple File Types Across Multiple Sources

We are faced with a situation where data has been backed-up to several external mediums and we are undergoing an exercise to consolidate the data. The data is comprised of binary files, audio, video, ...
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1answer
400 views

avoid duplicate files during backup

I'm backing up 2 drives to an external backup drive. The 2 source drives have a lot of duplicate files (name/size) between them (for work). One of the source drives is already backed up to the ...
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6answers
3k views

Ways to deduplicate files

I want to simply backup and archive the files on several machines. Unfortunately, the files have some large files that are the same file but stored differently on different machines. For instance, ...
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3answers
417 views

Backup of 5TB server

I'm looking for a software that will help me backup a server with 5TB of data. My wishlist: Backup on 1-2TB SATA disks Should need little to no configuration (just the directories to backup and the ...
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4answers
2k views

Is there a diff utility that allows you to exclude columns?

For example, I have a text file, each line is a long string. I want to exclude 2 "segments" of this string, say columns 1-7 and 20-22. So the bottom 2 lines below would be a match: ...
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114 views

How to stop Deduplication in Windows 2012 R2

Deduplication has been enabled on my server and I would like to stop it, since I don't need it to run. I have disabled the deduplication on the drive, but the deduplication process continues. How can ...
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612 views

Windows 7 file-based backup service

I'm looking for a good replacement for Lazy Mirror, since it doesn't support Windows 7 well. Pros: One of the things I really loved about Lazy Mirror is that it always maintains a "full" backup, but ...
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2answers
776 views

Remove duplicate lines from a very large text-file [duplicate]

I have a very large text-file (> 50 GB), but most lines are duplicate, so I want to remove them. Is there any way to remove duplicates lines from a file, and handle files > 2GB? Because every method I ...
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1answer
180 views

Safety of redirecting System folders (e.g. : program files ,users,… ) using symbolic links?

Can redirecting system folders as mentioned above using symbolic links cause problems to the system or some applications? And is there any problem if I redirect the folders to another partition on ...
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1answer
1k views

Remove duplicate emails (Outlook 2003)

Sometimes our POP server has a fit and it re-sends a bunch of e-mail messages again to a particular user and I have to clean up those duplicate messages that ended up in the local outlook store. Is ...
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3answers
2k views

Why do I have identical files in one directory, in Windows 7?

I just rebuilt my system after a new Power supply fired my CPU, MBD, Video card & a Blu-Ray drive. During all this I had to restore Windows from a backup (sector copy). All seems well, but ...
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1answer
530 views

Duplicate video finder? [duplicate]

Is there such a thing as a duplicate video finder that will look for duplicates based on video/audio comparisons of files rather than just the file size?
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4answers
2k views

How can I have two files with the same name in a directory when mounted with NFS?

I have a C++ application test that creates 10,000 files in an NFS mounted directory, but my test recently failed once due to one file appearing twice with the same name in that directory with all the ...
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How can I locate duplicate binary files using freely available tools?

As part of an exercise to help reduce the duplication of files, management would like to get a report of all duplicate binary files including images as these seems to exceed 100,000 or more and ...
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1answer
345 views

Deduplication efficiency with TrueCrypt File container and crashplan

I have a 100GB truecrypt container file (among lots of other things) that I am backing up with crashplan onto an external HDD. I have disabled "Preserve modification timestamp of file containers" so ...
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119 views

command line extracting especified file from 7z file

I would like to extract a specific file from a 7z file, but that filename exist twice on different directories. How can I choose one of them? I tried using compressed path but I received an error ...
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3answers
444 views

Fuzzy Duplicate File Finder?

Is there any GUI application (either for Windows or Linux) that implements fuzzy hashing algorithms like ssdeep or sdhash to find near duplicate files (mostly text files)?
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0answers
17 views

Background way to find duplicate media files [duplicate]

Any know a way to semi-automatically (in background?) identify (exact) duplicate media files to simplify deduplication? Media files eat up server space yet the need ot avoid loss leads to multiple ...
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4answers
250 views

Locate near-duplicate files in a folder

I have a folder full of files, with a number of duplicate files in it. Unfortunately, in a number of cases, one version is an updated version of another, so a straight byte-match doesn't locate the ...
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0answers
93 views

Copy only files that don't exist regardless of file name?

My dropbox account apparently renames all auto uploaded images. I'm about to clear my phone and I would like to verify that all images are in the dropbox folder before deleting them. If they had their ...
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1answer
696 views

How to identify duplicate files (by name and size) and delete them? [duplicate]

Possible Duplicate: Find duplicate files on Mac OS X I am trying to grep duplicate files in this selection: find . -name '*.CR2' I want to delete duplicate CR2 on my RAW files archive. ...
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79 views

Checking files on an external drive to whole computer for duplicates

I'm looking to use an external drive for a new purpose and want to see which, if any, files on it are not already on my main pc. I've seen comparison programs that can compare folders or one drive to ...
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1answer
59 views

Ensure the download is not a dupe

I want to (recursively) download a directory of files to a location from a WebDav Server. If the file is alreay present (somewhere there), it shall not be downloaded again. However the folder ...
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1answer
629 views

md5deep not working with duplicated files in different directories

I want to use md5deep to check that some copied directories are copied correctly. But seems md5deep doesn't use the filenames stored in the genearted .md5-files when matching! This actually means, ...