Behavior of differential backups

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Hi,

I want to create differential backups of my system drive. To do this I have set the settings to creating a full backup after 5 differential versions. The cleanup rule is set to keep two chains only.

Basically it works, but not as expected.

What I get is a backup list like this:
Backup File ------------------ File Size
BAK_full_b1_s1_v1.tib 55GB
BAK_diff_b1_s2_v1.tib 1.2 GB
BAK_diff_b1_s3_v1.tib 2.4 GB
BAK_diff_b1_s4_v1.tib 2.6 GB
BAK_diff_b1_s5_v1.tib 2.9 GB
BAK_diff_b1_s6_v1.tib 2.9 GB
BAK_full_b2_s1_v1.tib 16.2 GB
BAK_full_b2_s1_v1-2.tib 15.7 GB
BAK_full_b2_s1_v1-3.tib 15.8 GB
BAK_full_b2_s1_v1-4.tib 15.9 GB

If I interpret this list correctly the first of the b2 backups is not a full backup but maybe a full diff to the first b1. All the other b2 backups seem full diff backups to the first b1 as well.

I expected the first b2 backup to have a size of roundabout 55 GB (like the first b1) and all other b2's around 2 or 3 GB.

Apart from the size the naming is not what I expected. I expected something like b2_s1_v1, b2_s2_v1, and so on.

Could you tell me what I'm doing wrong? Or is this the behavior one should expect?

Regards
Thomas

mer 02/04/2014 - 19:51
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Something is obviously wrong with b2. It appears that some type of consolidation is happening.
Do you have an limitations set on how much storage space the program can use?
This behavior could be caused by your backup scheme settings.
Would you consider posting a screen capture of your current backup scheme? I am assuming that you have not edited your original settings and have not restored your system during the time of these backups???

Consider changing your current backup task to "not scheduled" and cease to use this task for a while.

GH1. How to change a backup task from scheduled to "Do Not Schedule".
-------------------------------------
Next, create a new backup task pointing the storage to a new and empty sub-folder. Set it up like this next link except change the 2 diff to the 5 diff you want to keep. Assign a different name to each task so no two tasks ever have the exactly same name.

GH13. Create Custom Differential Backup Scheme. 2 Diff, Keep 2 chains.

The link below can give you an idea of how the storage folder should link except yours should show on 2 chains being kept.
With the setting set to keep 5 diff and keep 2 chains (6 backups per chain) you can expect after backup #13 which is 3rd full backup, chain 1 (6 files) will be deleted leaving all 6 of backup b2 and only the full of b3. The backup will continue to add the 5 diff until the next full where it all will repeat. You really will never have two full chains but for a short time but will always have the two full.

You might want to keep the original (optional) or keep more chains. Keep as many as your storage space will allow. One mistake often made is the too quick deletion of old backups because restore needs may not occur until months later.

GH14. Example:Custom Differential Backup Scheme . 6 Diff, Keep 4 chains. & folder

jeu 03/04/2014 - 01:17
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I have attached a screenshot of my settings. I had the same problem with the 2013 version as well. I hoped to solve it by upgrading.
The system has not been restored and I'm not aware to have set any consolidation or compression options.

The task has been re-created at least two times because I thought I might have messed something up with the old tasks.

As you can see from the second screenshot the backup is scheduled to be created on shutdown.

The system I'm running is Win7 64bit.

I will try to create a new backup task as described in the link you posted and set it to two backups. That way I don't have to wait 6 days for the results.

Thanks for your help Thomas.

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jeu 03/04/2014 - 16:23
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Hmm, interesting. I just deleted the old task and told TRue Image to delete the files as well. TI did only delete the b1 files not the b2 files. Somethings really strange.

jeu 03/04/2014 - 16:25
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check the log files for on the dates the b2 versions were created. There may be some info there.

here is the best method of deleting the backups from within the program.
GH5. How to delete backup files using Acronis Backup 'Explorer'

jeu 03/04/2014 - 18:14
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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I uninstalled TI using the clean up tool. Afterwards I created a full+2 differential backup task with a maximum of 2 chains.

Instead of triggering the task through an event I chose manual execution and simply created backups in short succession.
That had the expected result. Now I'm trying to execute the task on shutdown again. Hopefully that will work now as well.

I'll keep you informed. Again, thanks for helping.

jeu 03/04/2014 - 19:55