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Maddening Disk Full Error

Beginner
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I have this truly maddening problem on one of my backups in which I get a disk full error when I have plenty of free space on both the source and target drives. I have True Image 2013 (build 6514) set up to do an incremental backup for a 1TB disk containing about 420GB of data. I back this up to a 1TB disk that is dedicated to only holding this single backup. The target disk has about 455GB currently used for the backup. I have automated consolidation set as follows:

Number of backup versions not to exceed 15
Other limits not enabled

Every time I do a back up now, I get a disk full error and this is driving me crazy. I'm guessing it might have something to do with the consolidation algorithm, but I cannot figure out how to solve the problem and I have 500GB+ free on the target disk. I am about ready to give up on the product as I cannot find an answer anywhere I look. I have even tried recreating the backup from scratch, and still I eventually run into the disk full error. Can anyone here help? Please :-)

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Regarding the full backup image currently on the external drive: was that created with the same Incremental backup task that you are trying to run now?

Or, is that backup separate, and this is the first time you're trying to run a new Incremental task?

Legend
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How much used space on the source disk?

If all backups are stored in one folder, would you post a picture of the folder containing the backups?
Perhaps their sizes would give us some clue.

Consider runnning a disk check for file errors on the target just by chance the free space is being reported incorrectly.

Beginner
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Thanks for the responses guys. Sorry it took me so long to respond, but had lots of fires to put out lately at work and home. Let me try and answer all of your questions.

1. was that created with the same Incremental backup task that you are trying to run now? ...Or, is that backup separate, and this is the first time you're trying to run a new Incremental task?

I am not sure I completely understand the question, so let me answer this way. The incremental backup(s) that are giving me the message are part of a regularly scheduled backup I set up using a backup method of "incremental". I am NOT creating a new full version after X incremental versions, i.e., a full backup was created when I first invoked the backup and it has been creating incremental versions against the initial full version since. To try and address the problem, I completely deleted a prior backup that was set up the same way, including deletion of all back up files. I did this to see if the backup was somehow corrupt. After a new full backup and several incremental versions, I started getting the same disk full errors again.

2. How much used space on the source disk?

The source disk, i.e., the disk I am backing up, has 931GB of usable space. Data currently occupies 513GB of that space with the rest free. This disk is an NTFS disk and is not set for compression by Windows.

The target disk, i.e., the disk holding the back up sets, also has 931Gb of usable space (they are same brand and size disks). Backup sets currently occupy 476GB of that space with the rest free. There is nothing on this disk other than the backup sets. This disk is also an NTFS disk and is not set for compression by Windows.

I noticed that less space is being used on the backup drive than the source. I did not change any compression settings, so I am assume that Acronis does some compression by default on the target. I just checked the settings and it does indeed look like the Compression level on the Performance tab is set to a default of normal which would explain the lower usage on the target.

I added an image of My Computer so you could see the space being used by each drive and an image of the target disk, Backup (F:), opened to the folder containing the backup sets. It is interesting to note that it looks like incremental sets are being created each day, but I still get the disk full error. This is one of the things that led me to believe that consolidation was causing the error. When I open Acronis in the morning to check the backup status (I have it set up to do backups in the middle of the night), it seems to be stuck in "Consolidating..." for the source drive in question.

3. Consider runnning a disk check for file errors on the target just by chance the free space is being reported incorrectly.

That was one of the first things I did and everything checked out normal.

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Legend
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The disk full error is mostly calculations. The external backup disk shows free space of 455GB. The used space on the User Data is 513. Acornis does not calculatte condensed space but actual plus some allowance. There is not enough space for another full backup.

Actually, for the most part, the 1TB disk is useless for backups here as there is only room for 1 full backups plus a few inc.
Acronis will not delete the old until a new is complete so it cannot create a full replacement except to an empty drive.

It really looks like you need to get a larger storage disk but I would avoid the 4 TB size as they have been trouble for backups.

Acornis will not create two backups (original plus replacement) within the 932 space.
If you were to move some data off the source disk so the use space is smaller, then you could maybe store 2 full backups.

Or, if you wanted to continue using the 1TB, you could create a custom task and create only full backups. or full plus inc; Before any pending full backup, you would need to use the program (or manually) and delete ALL backups on the 1TB backup disk so the new backup would be created on a empty storage disk and it would be start being the only backup file on the disk with a few inc to folow. The next full would requrie the repeat of the delete back to the empty storage disk again.

This is why I feel you need a larger storage disk.

Sorry to be the bearer of bad news but those are the options I see as available.

Beginner
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I will suck it up and get a 2 TB drive then. It's not really bad news if it solves the problem, it's just a solution that has some material cost associated with it. Truly bad news would be "the problem can't be solved," and, believe me, I have plenty of those in my life ;-)

Thanks GroverH

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You won't regret getting a large external HD. Once you have it, it will encourage you to backup more often, and to backup more things. And, you can save more versions/dates of backups. My external HDs have saved me many times.

Your first decision will be whether to get an externally-powered drive or a portable drive. Portable drives are very convenient, as they are smaller and lighter and require no external power. Their sole downside is higher cost than the desktop drives that need an AC adapter.

Legend
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The 2 will allow you to store twice as much as the 1 so the problem is improved but not really solved. It still may take some fine tuning to of your scheme and deletions to get a solution which is more workable or more practical. The solutions or workarounds I offfered above will still need to apply to the 2TB if storing only 2 full backups (plus a few incs) is not adequate. If you can afford it, even consider 2 2TB storage disks and alternate your bacups between disks for greater backup date retenion. I would suggest the 3 or 4 TB disks but for most, the partition limitations make these not practical. The 3 and 4 are only practical if using
GPT style partitioning and this may not be practical for some computers and some software.

Is there anything (large files) on the source disk which could be moved permanently onto another disk or partiton to reduce the size of the backup?

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You could do what I do. I have a separate partition for my large media files (music, video). The partition is included in my ATI full disk backup, but I exclude those media extensions: .flac; .mp3; etc.

I separately backup/mirror my media files to an external HD using Microsoft Robocopy. That ensures they are backed up, but keeps my ATI disk images to more reasonable size so I can image more often and save more images.

Beginner
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Thanks, Guys. Your suggestions are really good and I am looking at my options.

As for using an external drive, I use removable cartridges for most of my archive drives which includes the backup drive I am using for this data. This is faster because it uses the internal SATA. I haven't build a new PC in a couple of years and this one is not set up for USB 3. It might have an eSATA port on it. I will have to check. I guess I could slap an USB3 (or eSATA if needed) adapter in the computer. Do you guys have any recommendations or feedback regarding the performance & reliability of USB3 versus eSATA for backups? Then again, I kind of like having the drives in the box so they are always available for automated backups and so my desktop isn't cluttered up with a lot of external drives. I have found that if you buy external drives over time and they aren't from the same vendor, they don't always stack that well because of the proprietary cases used. I would be interested to hear your thoughts on all this, though.

As for partitioning the data, I currently use portable drives to archive my video files once they are edited and converted to whatever formats I need. I copy (mirror) each file to two separate portable drives, taking them off my data drive, unless they are very special, e.g., personal and family videos, and I want them on my working drives. This also allows me to grab a portable drive with movies and shows on it and pop it onto any computer in my house for viewing.

The bottom line is that I don't have that much in the way of video content on my main data drive. I am a bit of a music hobbiest (I play and compose), and I do have lots of music related stuff that I could perhaps move to a separate partition. It definitely doesn't take up as much room as video stuff does, but perhaps the combination of audio and video content I do have on my data drive is enough to justify a separate partition. This would allow me to create two separate backups on two separate target disks as you suggest. I analyze this today and see what it buys me.

Thanks again for all your help.

Beginner
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The real issue here is that we're paying for a supposedly leading edge SW product, evolved over many years, that does a crap job.
If there is room on the backup drive for the compressed image, then the backup process should complete.
At the very fucking least, the SW should warn one before beginning the multi-hour backup, that there is insufficient room on the target drive, not just before completion.

This is BS and I am pissed.

Legend
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Arnold,
I imagine the program does not know how much space will be saved by compression until it encounters the actual problem. The better the user understans how the program works, the better they can configure their settings.

For example, many users mistakenly believes that an old backup will be deleted prior to the program creating a replacement, whereas,
in reality, the program creates a successful replacement first and afterwards deletes the old backup. The procedure causes the user to temporarily need enough extra space for a new full backup before this space will be freed up by the actual deletion process. This temp need for space can often cause the "disk full" error when at first glance, there appears to be ample space once the old backup is deleted.

I don't know whether this was your issue or not but this temp need is an issue that can often be overlooked when determining the storage requirements.
Any disk full message is sad but often times a reduction or change in what is backup are retained can provide additional space.

Beginner
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I'm having a similar issue but it's not a compression issue. I'm a new Acronis customer. I puchased the True Image 2015 for the 3 PCs in my office. I bought new 1TB My Passport Ultra external hard drives for each PC. I am having the following issue with every PC.

I set up the back ups on each of our machines and set up a back up frequency - really frequent, like every few hours because of all of the year end data that is going on to our machines - but did not configure a back up scheme. This is a totally new product to me and I rushed through the set up, my mistake. So after a number of days all of our external hard drives had filled up and the back ups were stopped with the disk full error. Makes sense. So then I cleared out a bunch of the old back ups. Created a back up scheme - Incremental, creating a full back up every 5 versions, deleting versions more than a few days old. It will do one initial back up after this but no more. It says the disk is full. But it also says 846.05 GB of 931.48 GB free. My entire OS is only 62GB. The other 2 PCs have about as much space free and a comparable amount of data to back up.

I have had 6 support chats now with different Acronis support representatives. I have deleted the back up schemes, taken everything off of my external hard drive, uninstalled and re-installed Acronis, the source has been changed from entire PC to disks and partitions - there may have been other things that were tried, it's all blurring together now. I don't know what else the support reps might try and I have no idea what to do on my own but I have spent hours, almost 3 full work days, with them taking over my computer trying to resolve this issue, trying to run back ups on my own, and nothing has worked. I need to get our computers backed up and get back to work.

I didn't know if I should continue on this thread or start a new post. Recommendations on what would get me the most useful feedback would be appreciated. I'm not really familiar with how to best use these forums.

Help please! Thank you in advance!!

Legend
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As a new user, you have a considereable (but not insurmountable) learning curve ahead. If
--------------------------------------------
Item 1

This next example will help you to understand what you have configured for a backup scheme.

Custom Incremental Backup Schemes--Delete older than X days.
http://forum.acronis.com/forum/45927

Note: your scheme is:

If, Full after 5 incrementals, your chain length is 6 files.
What number days is your "keep only a few days". If 7, the example is an exact illustration of what has occurred.
The trigger date of 7 days does not start until after you have completed the first chain (full + 6 inc), so you will be creating 8 additional backups before the deletion is scheduled to occur. Knowiing how this works offers a better chance of controllinig the elapsed days.
FRANKLY, however, I discourage fellow users to NOT USE "elapsed days." One reason for not using is that it is not intuitive and confusing.

Instead, use the option "store no more than X recent version chains as per this example.

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

You set how many incrementals (5 if you wish or chain length = 6) to keep before next full;
and how many "store no more then X chains such as 1 chain (6 files) so the first deletion would occur after backup #13, at which time the first six files of chain 1 would be deleted.
--------------------------------------

Your used space would imply you have plenty of space. Maybe you included the 1T as part of what is being backed up??
Perhaps a screen capture of your 1 TB tib storage folder, and a picture of your Windows Disk Management graphical view would help to explain what has occurred.
Why type backup? Is this a full backup?
https://kb.acronis.com/content/48404

Next is some additional assorted help. Acronis help is along the left margin under the 2015 helps.

A discussion of how to configure backup schemes:
http://forum.acronis.com/forum/75086

Do's & Don'ts--Hints to help prevent issues with your TIB backup files creation.
http://forum.acronis.com/forum/64640

Lots of help here.
https://forum.acronis.com/forums/acronis-true-image-home-discussions/best-practices

Beginner
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I also have same problem. I have a 2 TB external drive (Seagate) with nothing on it. Drive is plugged into a Linksys router as network drive. Every evening I backup my email folder per schedule. Nothing occurs. I did a manual backup.  When backup starts it shows "Target Drive out of space"  I finally said Ignore and it completed fine.  I had previously used 2012 version which has functioned flawlessly since 2012. I Installed 2015 so I can do the Win7 to Win10 upgrade seamlessly.  Additionally 2015 keeps changing my primary C: manual  backup to a different external drive scheduling from no schedule to random days and time. Not a nice feature, who thought that one up!

Forum Hero
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Gary, there could be neworking/permission issues at play here, not really sure. However, if you upgraded from 2012 to 2015, I would recommend you comletely uninstall Acronis and then reinstall cleanly.  I would also highly recommend using the ATIH cleanup tool and following the instructions in the post below to help ensure the best install possible.  Little things like making sure to right click the uninstaller and installer and select "run as administrator" (even when logged in with an admin account already), can make a world of difference.  Leftovers from earlier insalls, OS upgrades, a combination of both, can leave fragmetns of past applications  or bring with them other underlying errors that may not yet have been noticeable until there was a change in the application.

https://forum.acronis.com/forum/113656#comment-334624

Beginner
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EVERY time i try to backup my OS drive (500GB) with ANY other EMPTY and NEW hard drives regardless of size (1.5TB, 2TB, 3TB, 4TB, 5TB - yes, i've tried that many) I get the "Disk is full" error message.  ?!?!?  Any help would be greatly appreciated. 

This has happened ever since I "upgraded" from 2015 to 2016.

 

Trying to do this extremely simple thing!

bkup C drive using the following settings:
single version scheme, not scheduled, computer is prevented from going to sleep, backup sector by sector.

 

 

 

 

Forum Star
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Bryan...welcome to these user forums.

Something must have happened during the upgrade.  I would recommend following Bobbo's  suggestion to perform a clean install.

https://forum.acronis.com/forum/113656#comment-334624