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Delete incremental files

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I have a incremental backup of a system partition:

Mis particiones_full_b1_s1_v1.tib
Mis particiones_full_b1_s2_v1.tib
Mis particiones_full_b1_s3_v1.tib
Mis particiones_full_b1_s4_v1.tib

I can delete intermediate files (s2 and s3) and then restore from the last file (s4) or are necessary all files?

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Please confirm what you have typed. On SLICE s2, S3, & S4, does it read?

Mis particiones_full_b1_s1_v1.tib
Mis particiones_INC_b1_s2_v1.tib
Mis particiones_INC_b1_s3_v1.tib
Mis particiones_INC_b1_s4_v1.tib

If slice S2, S3 & S4 reads "INC", then none can be deleted--except perhaps for the most recent.
Each Inc has its own piece of what changed, and the other INC have their piece. There is no duplication of data being backed up.
If you delete S2 and/or S3, then the only part that can be used is the Full backup and S4 will not be recoverable.

If you were to start over and use a Custom/Differential, then only any 1 diff is needed with the full to be recoverable.

Set up your new tasks with automatic cleanup so the program will do the deletion automatically, without the user invovled.

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Depending upon the type of backup scheme you wish to create, here is an example of each type. These can be set up for Disk image, or Partiton, or Files-folders backups. These example show how to set up automatic cleanup so the program will do the deletion after it reaches your set goal of how many chains to retain.

Editing an existing task is not recommended. Rarely does an edited task perform to user expectations. It is usually better to start with a new task using a new non-identical task name and point to a new storage sub-folder so each task has it own storage folder/sub-folder. Old task can be stopped or deleted from the task listings.

GH11. Create Custom Full Backup Scheme w/auto cleanup....Store/Keep 4 versions (chains). Use whatever number best fits the individual needs..

GH12. Create Custom Incremental Backup Scheme w/auto cleanup. ...Keep Full plus 6 Inc per chain. Store/Keep 4 chains. Use whatever number best fits your needs.

GH13. Create Custom Differential Backup Scheme w/auto cleanup. ...Keep Full plus 2 Diff per chain. Store/Keep 2 chains. Use whatever number best fits your needs.

GH25. Understanding differences between Inc and Dif for Safety

GH64. 71342: 2015 How to save a non-scheduled task.

GH63. 64640: Hints to help prevent issues with your TIB backup files creation.

GH63. 75086: A discussion on how to configure backup schemes.

Official Log File.
https://kb.acronis.com/content/49484

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