Time Machine completes once, then says "too large for backup disk"

Hello all,
I'm a very experienced, certified Apple tech, with over 15 years' experience working on Macs, having used them since 1984.
Client's iMac (27-inch, Late 2009)
Mac OS X 10.6.8, fully up to date
12 GB RAM
History: Internal 1 TB hard drive was failing. Mac out of warranty, so HDD was replaced with a new 1 TB hard drive.
Data was cloned from old drive using SuperDuper!
Now, Time Machine will not back up more than once.
The error reads:
"Time Machine could not complete the backup.
This backup is too large for the backup disk.
The backup requires 728.32 GB but only 568.57 GB are available."
The backup drive is 1.5x the size of the internal drive. There are no other hard drives attached that would be included in the backup.
Internal hard drive: 1 TB
Available: 392 GB
Used 608 GB
External backup drive 1.5 TB
Available 568.57 GB
Used 931.39 GB
I have tried many steps from the pondini.org site and other blogs and internet forums, including this one.
External hard drive has been reformatted/erased several times.
We have disabled indexing, deleted the Spotlight index, and re-enabled indexing.
I can't determine why the Time Machine backup is 1.5 times the size of the data on the internal boot drive.
This was never a problem before the internal hard drive was replaced, so I think it's related to that.
I had the client install BackupLoupe. Her computer is not at our office, but I can get more info from her if needed.
If there's something obvious I'm missing, let me know.
Thanks in advance,
Dave

That's been done, and here are the results:
July 13 6:22am
Starting standard backup
Backing up to: /Volumes/a***r/Backups.backupdb
Node requires deep traversal:/ reason:must scan subdirs|
No pre-backup thinning needed: 678.09 GB requested (including padding),
831.97 GB available
Copied 122.0 GB of 564.1 GB, 246633 of 523955 items
Copied 294.4 GB of 564.1 GB, 320260 of 523955 items
CoreEndianFlipData: error -4940 returned for rsrc type open (id 128, length
12, native = no)
CoreEndianFlipData: error -4940 returned for rsrc type open (id 128, length
12, native = no)
Copied 444.4 GB of 564.1 GB, 453652 of 523955 items
Copied 523956 files (554.8 GB) from volume Macintosh HD.
Starting post-backup thinning
No post-back up thinning needed: no expired backups exist
Backup completed successfully.
July 13 6:42am
Starting standard backup
Backing up to: /Volumes/a***r/Backups.backupdb
Node requires deep traversal:/ reason:must scan subdirs|
Starting pre-backup thinning: 678.15 GB requested (including padding),
268.78 GB available
No expired backups exist - deleting oldest backups to make room
Deleted backup /Volumes/a***r/Backups.backupdb/iMac/2013-07-13-021422: 831.05 GB now available
Pre-backup thinning completed successfully: 1 backups were deleted
Backup date range was shortened: oldest backup is now Jul 13, 2013
Copied 69.2 GB of 564.1 GB, 228921 of 523955 items
Copied 231.8 GB of 564.1 GB, 294537 of 523955 items
CoreEndianFlipData: error -4940 returned for rsrc type open (id 128, length
12, native = no)
CoreEndianFlipData: error -4940 returned for rsrc type open (id 128, length
12, native = no)
Copied 379.7 GB of 564.1 GB, 409687 of 523955 items
Copied 543.7 GB of 564.1 GB, 517846 of 523955 items
Copied 523967 files (554.8 GB) from volume Macintosh HD.
July 13 1102 am
Starting standard backup
Backing up to: /Volumes/a***r/Backups.backupdb
Node requires deep traversal:/ reason:must scan subdirs|
Starting pre-backup thinning: 678.15 GB requested (including padding),
268.78 GB available
No expired backups exist - deleting oldest backups to make room
Deleted backup /Volumes/a***r/Backups.backupdb/iMac/2013-07-13-021422: 831.05 GB now available
Pre-backup thinning completed successfully: 1 backups were deleted
Backup date range was shortened: oldest backup is now Jul 13, 2013
Copied 69.2 GB of 564.1 GB, 228921 of 523955 items
Copied 231.8 GB of 564.1 GB, 294537 of 523955 items
CoreEndianFlipData: error -4940 returned for rsrc type open (id 128, length
12, native = no)
CoreEndianFlipData: error -4940 returned for rsrc type open (id 128, length
12, native = no)
Copied 379.7 GB of 564.1 GB, 409687 of 523955 items
Copied 543.7 GB of 564.1 GB, 517846 of 523955 items
Copied 523967 files (554.8 GB) from volume Macintosh HD.
Backup completed successfully.
July 13 307pm
Starting standard backup
Backing up to: /Volumes/a***r/Backups.backupdb
Node requires deep traversal:/ reason:must scan subdirs|
Starting pre-backup thinning: 679.38 GB requested (including padding),
267.58 GB available
No expired backups exist - deleting oldest backups to make room
Deleted backup /Volumes/a***r/Backups.backupdb/iMac/2013-07-13-062230: 829.87 GB now available
Pre-backup thinning completed successfully: 1 backups were deleted
Backup date range was shortened: oldest backup is now Jul 13, 2013
Copied 80.4 GB of 564.1 GB, 235855 of 523977 items
Copied 218.1 GB of 564.1 GB, 289940 of 523977 items
CoreEndianFlipData: error -4940 returned for rsrc type open (id 128, length
12, native = no)
CoreEndianFlipData: error -4940 returned for rsrc type open (id 128, length
12, native = no)
Copied 347.4 GB of 564.1 GB, 395287 of 523977 items
Stopping backupd to allow ejection of backup destination disk!
Copied 395788 files (353.7 GB) from volume Macintosh HD.
Backup canceled.
July 14 11:02am
Starting standard backup
Backing up to: /Volumes/a***r/Backups.backupdb
Node requires deep traversal:/ reason:must scan subdirs|
Starting pre-backup thinning: 680.07 GB requested (including padding),
470.83 GB available
No expired backups exist - deleting oldest backups to make room
Error: backup disk is full - all 0 possible backups were removed, but space
is still needed.
Backup Failed: unable to free 680.07 GB needed space
Backup failed with error: Not enough available disk space on the target
volume.
July 14 12.48pm
Starting standard backup
Backing up to: /Volumes/a***r/Backups.backupdb
Node requires deep traversal:/ reason:must scan subdirs|
Starting pre-backup thinning: 680.07 GB requested (including padding),
470.83 GB available
No expired backups exist - deleting oldest backups to make room
Error: backup disk is full - all 0 possible backups were removed, but space
is still needed.
Backup Failed: unable to free 680.07 GB needed space
Backup failed with error: Not enough available disk space on the target
volume.

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Hi Folks !
I have also my first problems with TM. It was running, the first time nicht&day to make the first backup and now seems the device to be full! This TimeMachineError was displayed:
This backup is too large for the backup volume. The backup requires 127.5 GB but only 46.5 are available. To select a larger volume, or make the backup smaller by excluding files, open System Preferences and choose Time Machine.
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Peter,
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If your installation is filling a 250 GB hard drive, you might consider your file management, and just what is consuming so much disk space. It could be that you have some data that would be better stored externally.
Those that would benefit most from using a Time Capsule are those using portable computers, since these are the least convenient to connect directly to an external drive. Certainly, it doesn't make sense to have a portable connected directly to an external to allow hourly backups, which could occur easily when using a Time Capsule. And, I dare say that most portable computer users have internal drives smaller than 250 GBs. I know I certainly do.
All this said, your question is really whether or not a Time Capsule is right for you. If you are filling a 250 GB hard drive, the 500 GB model would do, but just barely. Adding a second machine, also using all of a 250 GB hard drive, wouldn't be possible. In this case, even the 1 TB model would be just barely enough, if that. Again, you might want to consider your file management, or just stick with directly-connected external drives for use with Time Machine. There are scenarios where a Time Capsule makes sense, and scenarios where directly-connected solutions are better.
Scott

Which External Drives are compatible with Time Machine. I plan to utilize it for backups and to connect to an Airport Extreme.

MBP Retina, 15 inch, Late 2013. Intel Core i7. OSX 10.9.4
Which External Hard Drives are compatible with Time Machine.
I plan to use one drive for automatic backups connected to an Airport Extreme.
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OR
should I just buy the Time capsule and avoid the compatibility, connection and interference issues.
Thanks

Hi Kappy,
I just saw that on the Apple Support site that "Time Machine is not supported with USB hard drives that are connected to an AirPort Express or AirPort Extreme device", just as you have suggested.
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The following information is from Apple website:
Time Machine works with:
AirPort Time Capsule's built-in hard drive (any model)
External USB hard drive connected to AirPort Time Capsule (any model)
An external hard drive connected to your Mac
Use the Time Machine pane of System Preferences to choose your backup disk(s).
Additional Information
Time Machine is not supported with USB hard drives that are connected to an AirPort Express or AirPort Extreme device.

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http://web.me.com/pondini/Time_Machine/12.html
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"Backup is too large for backup volume" error

When I try to backup my StartUp Drive (931.2 GB capacity, 348.2 GB Available, 583.0 GB Used) to my Backup Drive (931.2 Available) which is mounted in the adjacent bay I have begun to get an Error Message that says "This backup is too large for the backup volume. The backup requires 1379.1 GB but only 931.0 GB are available." Clearly something is amiss. It was backing up to this hard drive just fine.
Here is the log from the Backup Buddy Widget
Starting standard backup
Backing up to: /Volumes/2 Backup/Backups.backupdb
Event store UUIDs don't match for volume: 4 Movies
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Backup content size: 583.0 GB excluded items size: 1.9 MB for volume 1 Start Up
Backup content size: 99.9 GB excluded items size: 0 bytes for volume 3 Media
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Backup failed with error: Not enough available disk space on the target volume.
Message was edited by: James Pittman1

James Pittman1 wrote:
I installed a new hard drive ( replaced a 250 GB with a 1 T drive), I deleted a sparse image from another drive (neither of these drives were included with the backup from TM) and I renamed the TM drive from "Backup" to "2 Backup" after I erased it. I then attempted the full back up from the "Startup" drive to the newly erased "2 Backup" drive and got the error message. All drives are internal.
According to the messages you posted earlier, you're trying to back-up three drives:
Backup content size: 466.2 GB excluded items size: 0 bytes for volume 4 Movies
Backup content size: 583.0 GB excluded items size: 1.9 MB for volume 1 Start Up
Backup content size: 99.9 GB excluded items size: 0 bytes for volume 3 Media
That's a total of 1149.1 GB. TM then adds about 20% for workspace it will need (the "padding" in the next message):
Starting pre-backup thinning: 1.35 TB requested (including padding), 930.96 GB available
You need a bigger TM drive, or to back-up one or more of the other drives some other way, and exclude them from TM.
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Time Machine Backup Is Too Large For Backup Disc NOT

Hi, I have not been able to locate anything to help me with a time machine/time capsule issue I am experiencing. I have a 750 GB internal and a 1tb capsule. I have been using it to back up for well over a year with no real troubles. About three months ago, a message appeared that my time machine drive was basically filling up and that it was going to start deleting old backups to replace with new ones. No big deal I knew that this day would come. Well, today, I receive a message that it wants to back up 621.99 gbs (the entire drive!) and there is only 59.33 gbs of space. This should not be the case, it seems to think it is backing up a brand new initial back up for some reason when it shouldn't be. Why is it trying to back up the entire drive? I can't figure out what to do to get it back on track. This is the problem with my Apple products, problems are so few and far between for me that I don't remember what to do to correct the issues that arise every couple years. Can anyone guide me?

...have not been able to locate anything to help me with a time machine/time capsule issue I am experiencing.
Nothing here, John?
User Contributed Tips:
Pondini - Time Machine - TROUBLESHOOTING (Sept 25, 2009)
http://discussions.apple.com/thread.jspa?threadID=2057525
Pondini - Time Machine -- Frequently Asked Questions (Apr 3, 2009)
http://discussions.apple.com/thread.jspa?threadID=1964018

Time Machine seems to be deleting files from the backup disk.

My main disk has about 400 GB of data including nearly 300 GB of movie files. Since I started using Time Machine in February, the backup disk has had about 400 GB of data on it. This morning Time Machine has said on the System Preferences display that it is "finishing backup" and in the process the backup disk contains only 108 GB of something - hopefully some of my data. The file structure looks OK on the backup disk but I am not sure that the data is there.
I turned Time Machine off and back on and for awhile it seemed to be moving data to the backup disk but then it went back to the "finishing backup" mode and the amount of data on the backup disk began to decrease again. This evening I turned Time Machine off and left it off but it turned itself back on. Somehow this does not seem right. This has happened a number of times.
The net result is that I have about 400GB of data on the iMac system disk and about 108 GB on the backup disk. What can I do to get out of this trap and start getting valid backup?
For starters I will dismount the backup drive and then disconnect the backup drive and at least I will have something left on the disk.
Thanks for the help.

Well, I can't really say what the problem is. You could try to repartition (not just erase) the HD and start Time Machine over again.
Or you could check Time Machine's logs in Console.app, and maybe someone else can help you if it's putting out errors (not my area of expertise).
Message was edited by: bcr88

Time machine won't find my wireless network for backup

Time machine won't connect to my external hard drive. It still exists in timemachine set up, but airport utility can't find it - says it doesn't exist. The option to set up airport utility manually is greyed out and not available. The problem happened when i changed my wireless router. The hard drive is a WD MyBookLive and the router is a Belkin. I'd really appreciate your help - this is driving me nuts! :-)

Well, the set up is this:
Motorola modem connects to
Belkin N300 by Cat 5 cable which then connects to
D-Link gigabit switch which connects to
Macbook pro by ethernet cable.
The Belkin also creates the wireless network, which is used by various devices in the house, including the printer.
Error messages I have received are:
From Time Machine (which lists the MyBook as one of its choices, but then can't find it): "
The server "MyBookLive.local" may not exist or it is unavailable at this time. Check the server name or IP address, check your network connection, and then try again."
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Hoping this may assist!
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Time Machine looking for backup disk/not finding

Time Machine backed up the HD on my 2009 20" iMac up till Feb. 4 when I downloaded Since then there have been no new backups of my HD and there have been problems wihen I have Time Machine "on" with other applications (TextEdit, Pages, Adobe Bridge CS4) opening or not responding after being open and with Finder not responding. I have also had grey screen freezes multiple times so that I have to use the power button to shut the computer down. When I take TM off of the Automatic backups, most of the problems with applications quitting and the grey screen freezes stop happening. (Although I believe I've had at least one or two grey screen freezes even then.)
Today I've run Verify Time Machine Backups. It completed that. Then I turned on Automatic Backups again. But then it showed "Looking for Backup Disk". So I selected the Backup Disk. Then I checked back in a while and it still showed Looking for Backup Disk. I removed the selected backup disk, shut down and rebooted, and reselected the backup disk. It is still showing Looking for Backup Disk.
The Time Machine is a 1 Terabyte size. My iMac is using 203.6 Gigabytes of its 319.21 G space.
In looking at what my Finder is showing as the name of my Backup Disk, I see that it is showing my Backup Disk as Virginia's Computer (3). It should be showing my Backup Disk as Virginia's Computer. If this is the source of the problem, how do I get my Backup Disk named back to Virginia's Computer? Is it possible to get it changed back?
My TM is used as a router for two iMacs and up through Feb. 4 I was sharing files between both computers. When the problems started, I turned off File Sharing in the other computer (Jim's iMac). I had noticed that frequently my computer's name as shown on the other computer would be changed to Virginia's Computer (2) or Virginia's Computer (3) and I would change it back when I noticed. Perhaps this is how the problem started.

I finally contacted Apple Support. Three support people and seven and a half hours later Time Machine began working correctly. Multiple things were tried. The Time Capsule ended up getting erased. Many files and folders were deleted from several places on my hard drive. It seemed that the final ones that made a difference after the Time Capsule was erased were files that were in my Keychain.
I have to thank Apple's Support people for persistence, especially Jim who is the one who got things back to normal as far as the Time Capsule & Time Machine goes. I have to keep watch to see if anything acts up now on my hard drive and then the solution will go further. But the issue with the Time Capsule and Time Machine appears to be resolved!
Thank you, Apple Support!!!

My time Machine keeps saying, "Time Machine could not complete the backup. This backup is too large for the backup disk. The backup requires 345.74 GB but only 289.80 are available." I have already excluded files. I have a 1tb external drive. HELP!!!

For over two weeks now I have been frustated and not having my TIme Machine back up to my 1tb external drive. I dont understand why now its a problem. It keeps saying
"This backup is too large for the backup disk. The backup requires 345.74GB but only 289.80GB are avialable. Time Machine needs work space on the bakup disk, in addition to the space required to store backups. Open Time Machine preferences to select a large backup disk or make the bakup smaller by excluding files." So I have already excluded almost all of my files, and even deleted the backup disk yet, that quote still keeps popping up. I am truly at a wall with this. I have a Mac OS X version 10.7.5. CAN SOMEONE HELP ME PLEASE????

If you have more than one user account, these instructions must be carried out as an administrator.
Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left. If you don't see that menu, select
View ▹ Show Log List
from the menu bar.
Enter the word "Starting" (without the quotes) in the String Matching text field. You should now see log messages with the words "Starting * backup," where * represents any of the words "automatic," "manual," or "standard." Note the timestamp of the last such message. Clear the text field and scroll back in the log to that time. Select the messages timestamped from then until the end of the backup, or the end of the log if that's not clear. Copy them (command-C) to the Clipboard. Paste (command-V) into a reply to this message.
If there are runs of repeated messages, post only one example of each. Don't post many repetitions of the same message.
When posting a log extract, be selective. Don't post more than is requested.
Please do not indiscriminately dump thousands of lines from the log into this discussion.
Some personal information, such as the names of your files, may be included — anonymize before posting.

The message I get is: Time Machine could not complete the backup. This backup is too large for the backup disk. The backup requires 111.27 GB but only 42.1 GB are available.

I have a problem with my Time Capsule. The message I get is: Time Machine could not complete the backup. This backup is too large for the backup disk. The backup requires 111.27 GB but only 42.1 GB are available. As a result, my backups are no longer running. My umderstanding was that the Time Capsule would automatically delete old backups to make space. Can anyone help me figure out how to get my backups to run again?

If you have more than one user account, these instructions must be carried out as an administrator.
Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left. If you don't see that menu, select
View ▹ Show Log List
from the menu bar.
Enter the word "Starting" (without the quotes) in the String Matching text field. You should now see log messages with the words "Starting * backup," where * represents any of the words "automatic," "manual," or "standard." Note the timestamp of the last such message. Clear the text field and scroll back in the log to that time. Select the messages timestamped from then until the end of the backup, or the end of the log if that's not clear. Copy them (command-C) to the Clipboard. Paste (command-V) into a reply to this message.
If there are runs of repeated messages, post only one example of each. Don't post many repetitions of the same message.
When posting a log extract, be selective. Don't post more than is requested.
Please do not indiscriminately dump thousands of lines from the log into this discussion.
Some personal information, such as the names of your files, may be included — anonymize before posting.

TIme Machine backup grows too large during backup process

I have been using Time Machine without a problem for several months, backing up my imac - 500GB drive with 350g used. Recently TM failed because the backups had finally filled the external drive - 500GB USB. Since I did not need the older backups, I reformatted the external drive to start from scratch. Now TM tries to do an initial full backup but the size keeps growing as it is backing up, eventually becoming too large for the external drive and TM fails. It will report, say, 200G to back up, then it reaches that point and the "Backing up XXXGB of XXXGB" just keeps getting larger. I have tried excluding more than 100GB of files to get the backup set very small, but it still grows during the backup process. I have deleted plist and cache files as some discussions have suggested, but the same issue occurs each time. What is going on???

Michael Birtel wrote:
Here is the log for the last failure. As you see it indicates there is enough room 345g needed, 464G available, but then it fails. I can watch the backup progress, it reaches 345G and then keeps growing till it give out of disk space error. I don't know what "Event store UUIDs don't match for volume: Macintosh HD" implies, maybe this is a clue?
No. It's sort of a warning, indicating that TM isn't sure what's changed on your internal HD since the previous backup, usually as a result of an abnormal shutdown. But since you just erased your TM disk, it's perfectly normal.
Starting standard backup
Backing up to: /Volumes/Time Machine Backups/Backups.backupdb
Ownership is disabled on the backup destination volume. Enabling.
2009-07-08 19:37:53.659 FindSystemFiles[254:713] Querying receipt database for system packages
2009-07-08 19:37:55.582 FindSystemFiles[254:713] Using system path cache.
Event store UUIDs don't match for volume: Macintosh HD
Backup content size: 309.5 GB excluded items size: 22.3 GB for volume Macintosh HD
No pre-backup thinning needed: 345.01 GB requested (including padding), 464.53 GB available
This is a completely normal start to a backup. Just after that last message is when the actual copying begins. Apparently whatever's happening, no messages are being sent to the log, so this may not be an easy one to figure out.
First, let's use Disk Utility to confirm that the disk really is set up properly.
First, select the second line for your internal HD (usually named "Macintosh HD"). Towards the bottom, the Format should be +Mac OS Extended (Journaled),+ although it might be +Mac OS Extended (Case-sensitive, Journaled).+
Next, select the line for your TM partition (indented, with the name). Towards the bottom, the Format must be the same as your internal HD (above). If it isn't, you must erase the partition (not necessarily the whole drive) and reformat it with Disk Utility.
Sometimes when TM formats a drive for you automatically, it sets it to +Mac OS Extended (Case-sensitive, Journaled).+ Do not use this unless your internal HD is also case-sensitive. All drives being backed-up, and your TM volume, should be the same. TM may do backups this way, but you could be in for major problems trying to restore to a mis-matched drive.
Last, select the top line of the TM drive (with the make and size). Towards the bottom, the *Partition Map Scheme* should be GUID (preferred) or +Apple Partition Map+ for an Intel Mac. It must be +Apple Partition Map+ for a PPC Mac.
If any of this is incorrect, that's likely the source of the problem. See item #5 of the Frequently Asked Questions post at the top of this forum for instructions, then try again.
If it's all correct, perhaps there's something else in your logs.
Use the Console app (in your Applications/Utilities folder).
When it starts, click +Show Log List+ in the toolbar, then navigate in the sidebar that opens up to your system.log and select it. Navigate to the +Starting standard backup+ message that you noted above, then see what follows that might indicate some sort of error, failure, termination, exit, etc. (many of the messages there are info for developers, etc.). If in doubt post (a reasonable amount of) the log here.

Time Machine completes once, then says "too large for backup disk"

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