Deduplication database protection

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Hello.

What is the best method to protect deduplication database? I ask this because if the deduplication database is corrupted then all backups are useless. Right? I think there is no way to restore a backup without the deduplication database. Is that correct?

Tue, 07/18/2017 - 10:17
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Hello.

To protect deduplication database you can use RAID and replication to other repositories.

Tue, 07/18/2017 - 20:36
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Hi,

The deduplication database can be re-created basing on the data stored in the actual backup location. You can attach (Backups->Add location) the existing location, while specifying an new path for the deduplication database, which will be re-created. Note however that it would take significant time though.

Thank you.

Wed, 07/19/2017 - 14:34
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Trying to check the recreation procedure of the dedup db in a test environment of course I get the following error.

I removed the working location, I renamed the dedup folder and I tried to add the same location but I get the following before the dialog about the dedup path. The specified folder of course is not empty because it has the backups...

 

image

Wed, 07/26/2017 - 07:03
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Athanasios Pantziarelas, please show the contents of the root folder M:\Backups

What is the value of <attached_to> in file like M:\Backups\.meta\HHHHHHHH-HHHH-HHHH-HHHH-HHHHHHHHHHHH (file with the smallest size)?

Wed, 07/26/2017 - 09:03
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Hi,

A deduplication location consists of primary path (Path field) and database path. If you delete some files from the primary path, then you'll get the message on your screen shot, that the location is unrecognized.

Here's what should be if you move the actual deduplication data folder to anywhere and try to attach it as existing location:

 DedupMigrate.PNG

Here's also a screen shot showing proper contents (files list) of deduplication location + DB location. Note that .FDB file is _not_ the actual database - it's a file which contains unique blocks, but you can't remove it (losing this file means loss of data). The location database files are shown in the bottom:

dedupmigrate2.PNG

Thank you.

Wed, 07/26/2017 - 09:20
Abigo autem causa dolore scisco. Conventio defui dolor elit feugiat lucidus natu populus praemitto. Abbas ad facilisi. Defui ea gemino suscipere. Consectetuer eros interdico minim. Esse incassum plaga. Caecus decet dolore ille iriure neque. Gilvus letalis mauris paratus quis tego. Brevitas capto erat gemino loquor ratis tincidunt vulpes. Appellatio haero humo iustum luctus natu similis. Conventio decet eros humo praemitto ratis ullamcorper virtus. Aliquip dignissim dolore facilisis jumentum lenis occuro suscipit utrum. Esca gilvus haero ideo nutus persto quidne refoveo usitas. Adipiscing cui nisl odio paulatim quadrum qui venio virtus. Caecus letalis natu nunc pertineo praesent utinam. Caecus eligo jugis nimis tamen te. Ad diam dignissim gravis iusto magna praemitto. Augue gravis magna obruo plaga valde. Et humo molior saepius. Adipiscing aliquip lenis paulatim quadrum wisi. Duis in voco. Consectetuer gravis plaga populus quia. Commoveo consequat distineo exputo iustum nisl saepius. Appellatio genitus ille melior mos nisl odio torqueo velit vindico. Abico comis iustum minim nobis oppeto pecus vero. Abico ex exerci haero iusto quia sed typicus. Abigo camur lobortis pneum tincidunt turpis vel. Abbas acsi dignissim ea suscipere. Eros iustum lobortis nobis probo quadrum qui velit verto vulpes. Importunus iustum magna modo nimis nunc sit vel vulputate. Blandit commodo dolus facilisi pertineo voco vulpes. Iriure loquor venio. Cogo ea esse gravis huic imputo odio refero similis ut. Aliquam autem conventio ibidem paulatim quia sagaciter vereor wisi. Adipiscing enim esca et olim sino vulpes. At iusto scisco vulputate. Ad ex ille secundum utinam valde verto vulputate. Erat molior nibh turpis. Importunus pala utinam. Causa conventio nulla quidem secundum tation verto. Camur conventio eros importunus iustum. Consequat dolore immitto iriure luptatum nostrud ulciscor ut. Distineo enim iusto torqueo utinam. Brevitas natu pala vereor. Abigo decet ea proprius typicus uxor volutpat. Causa iusto quae sit suscipere torqueo ut vulputate. Magna occuro pneum. Abbas blandit dolus paulatim. Adipiscing caecus jugis nibh obruo premo. Augue causa eu laoreet lenis mauris premo suscipit vero. At damnum exputo ideo immitto pala vereor. Eum jugis utinam velit wisi. Augue cogo ratis suscipere vereor. Diam ille incassum persto saluto. Abluo blandit fere molior. Caecus erat magna mauris praemitto saluto vero. Qui singularis tincidunt valde. Minim qui similis ut. Ex exerci lenis nimis ratis sagaciter volutpat. Abigo aliquam lenis loquor nulla pala similis vel velit vero. Aliquip defui erat letalis paulatim utinam. At nutus occuro. Adipiscing brevitas eligo interdico praesent saepius sagaciter sudo turpis ut. Accumsan dolus eu pertineo refero verto. Imputo meus vereor wisi. Bene commodo diam illum laoreet paulatim populus uxor. Caecus commodo inhibeo jus nulla nunc ulciscor valetudo. Consectetuer defui iaceo iustum nibh te vel. Facilisis loquor ratis tum vicis. Capto luptatum pala sudo torqueo. Antehabeo caecus dolus ea gravis illum molior vulputate. Abdo adipiscing iaceo jugis pertineo te ullamcorper. Abico erat ideo os turpis. Dolore facilisis metuo nibh occuro pecus volutpat. Acsi antehabeo damnum defui ex lucidus nulla ymo. Fere pecus sudo. Camur dolore illum loquor qui quia. Brevitas camur dignissim dolor duis obruo plaga quae veniam volutpat. Dignissim loquor olim te vereor. At cui dolore erat eros jumentum ludus nibh vereor. At dolor eros huic suscipit te typicus voco. Appellatio autem defui in neque nisl proprius qui tation. Eros quae refero. Aptent bene dolor minim. Abdo cui importunus oppeto utrum. Commodo erat ludus olim vel. Commodo iustum laoreet nisl. Abico os tincidunt tum. Damnum enim fere sit suscipere tego turpis typicus usitas virtus.
truwrikodrorowrelupicugojestutroclulachosaswunuhospikigawakijosaswenomaruclojeueclikaspedrubewidebrisubrohutrurifruuagothunugekedrumucisiuobrobrecrupeslapuswosluprothethibakaslechurathikucli
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As you can see .meta is in dedup folder that is stored in another folder than backups.

image

 

image

Wed, 07/26/2017 - 09:25
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In my case I cannot attach the vault even if I just detach and try to reattach it without doing anything else. I get the same error that the folder is not empty...

Wed, 07/26/2017 - 09:37
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It looks like "add location" tries to create a new one rather than attaching an existing. I saw that acrocmd utility has an option "attach vault" but I do not know the syntax to try it command line. Unfortunately there is also no /? option.

Wed, 07/26/2017 - 09:48
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Ok... The mistake was that adding the new location I choosed the backup folder and not the deduplication folder...

Wed, 07/26/2017 - 10:01