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Insufficient disk space

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Hi guys - I hope you can help

My Pc has 220GB (OS and data) on the C: (ssd) drive and 450GB (data) on an internal drive.

I have an external 4TB backup drive.
I perform incremental backups.

Every few months Acronis (TI 2015) informs me there is insufficient disk space, so I delete about 2TB files from the backup drive - then Acronis tells me 'The Specified File Does Not Exist - Operation has Failed' and the only option seems to be to delete everything on the backup disk, configure a new Acronis backup schedule and start afresh.
I've been doing this since Acronis 2010 and feel there is likely to be a better way

What I would like Acronis to do is this-
1 - Check first if there's sufficient space for the backup on the disk
2 - If there's not, then automatically delete the earliest backup
3 - Perform a full or incremental backup of my pc as per the schedule

It doesn't seem a huge ask, but I've struggling for many years to achieve this.
Is there someone who may be able to help me achieve this?

Many thanks
Pete
 

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Pete, unfortunately there is no chance that Acronis will introduce any changes to your ATI 2015 product as it is long out of date for support.

The issue you describe can be managed by using the automatic cleanup rules available in all current versions of ATI, including your ATI 2015.

The key to automatic cleanup is to understand how this works and take advantage of the same.

Nothing is deleted until after a new Full backup image file has been created for a new version chain, so your automatic cleanup rules need to take this into account.

Making some assumptions on your backup image sizes based on 220GB OS and 450GB Data source size, giving roughly around 630GB full backup image size after compression and exclusions, then the maximum number of full backups to fit on your 4TB backup drive would be 6 without taking into account the size of your incremental image files.

From these assumptions, I would configure automatic cleanup to "Store no more than 5 recent version chains" meaning that you need sufficient space to store 5 x full plus all associated incremental files, plus 1 more full backup file.  If you cannot fit this on your 4TB drive, then change the setting to 'Store no more than 4 recent version chains'.

Any other approach will require some form of manual intervention by deleting files to make space and this should always be followed by performing a validation of the task that created those deleted files - this is needed to reconcile the data stored in the Acronis Database for the task.

Acronis are looking to introduce a new backup cleanup tool in the ATI 2019 application (currently in Beta testing by users) which would help with this type of situation but they have no plans currently to change the cleanup rules that require a new backup is created before any old ones are deleted.

Thank you Steve.

I now remember you advised me on this issue before.

It was set to create a new version every 5 backups.

I've now set this to 4 and clean-up after 4 backups

Many thanks again for your help

All the best

Pete