Time Machine Slow Backup

I use Time Machine to backup to a G-Technologies 4TB external HD. The backup is extremely slow, many times saying it will take 69,000 days to back up. I have almost a TB to backup. The G-Technology HD will go off line. I'm not sure if this is a HD problem or Time Machine problem. My iMac is a IntelMac with 2.4Ghz Core 2 Duo, 4GB of Ram, OSX 10.8.2. Any thoughts?

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.

Similar Messages

Time Machine slow backup with Date Validation error?

Console is spitting out this garbage and I don't know what it means
Dec 24 01:17:46 Macbook-Pro mdworker[7772]: Date validation error: EXDATE = '20080626T150000,20080807T150000,20080814T150000'
Dec 24 01:17:48 Macbook-Pro mdworker[7772]: Date validation error: EXDATE = '20071022T150000,20081027T150000'
Dec 24 01:17:48 Macbook-Pro mdworker[7772]: Date validation error: EXDATE = '20080527T130000,20081028T130000'
It creeps along and eventually finishes but if I have a lot of data to backup it takes hours for a few hundred MB. Any ideas?
I've tried starting from scratch and have repaired permissions on my MBP with no luck.
Message was edited by: jgoettel

mdworker relates to Spotlight. Check this thread to see if it helps:
http://discussions.apple.com/thread.jspa?messageID=8372393&#8372393

Time Machine slowing to snail pace, md root, mdworker, backupd spikes

Running a fresh time machine backup, in this case a 480GB from MBPro to cleanly formatted 1TB Time Capsule over 1GBe, backup commences at a decent (though still too slow) clip of about 40GB an hour, then slows to a painful drip at 430GB complete when I rechecked in the morning.
Looked at apps and processes, seeing 99% cpu usage spikes varying across mds root, mdworker and backupd. When they back off, transfer picks up, though still really slow compared to what it should be.
Guess is an imbalance in how Spotlight interfaces with Time Machine on indexing. I would expect a 30% CPU constant level during the Time Machine job to keep up on indexing during file transfer rather than a spikey machine slowing, backup stalling methodology which appears to be happening.
Open to ideas, its not a memory or process leak or thread runaway, since a restart of the machine and return to the backup solves nada. I have 2GB of RAM with 1GB free during the job. I closed all other main apps, nothing else is placing a burden on the machine.

Gregory Lynn wrote:
Found a decent summary of how TM works in OS 10.5 http://www.girr.org/mac_stuff/backups.html which shed a little light on the operation and where one would expect slow downs.
That's more than a bit outdated. It refers to 10.5.1, the very early version.
See #D2 in Time Machine - Troubleshooting (or use the link in *User Tips* at the top of this forum).
One cause of apparently slow backups is actually extra-large backups. If yours seem too large for the amount you've done between backups, see #D4 there.
And you might want to browse Time Machine - Frequently Asked Questions (or use the link in *User Tips* at the top of this forum).

Time Machine everytime backups everyting!

My main system disk "Macintosh HD", 500 GB
Media disk is exernal disk named "Media", 1000 GB.
My Time Machine disk is named "DeLorean" and its external 1,500 GB.
I have about 340 GB more free space in the Time Machine disk than my data currently uses up.
My problem is that the Time Machine VERY often starts its backup FROM THE SCRATCH!
Doing FULL BACKUP! Deleting over 800 GB of data. If you see my logs, you will see it doesnt like something about the external "Media" disk.
It does this thing called "Deep event scan at path:/Volumes/Media reason:must scan subdirs|"... * see logs later.
Funny thing is, if i delete/erase the backup, or let it do the FULL backup when it wants, it usually after that does the normal smaller backup just fine.
BUT if I unmount the Media disk even once and do one incremental backup(which it does fine), then after i mount the Media back, next time it does this FULL backup and says in the logs about the Deep even scan.
All my disks are encrypted via FileVault2. Shouldnt time machine still work or is this setup fine?
Here are the logs. Yesterday i even shuffled all my disks and erased the Media and the time machine disk and encrypted them again.
You can see the first full backup starting at 2 am, then ONE succesfull incremental backup while both disk were still mounted. When i woke up at (13:20 pm) I did one incremental backup without the Media (ummounted it) and then again new one with media mounted (13:29 pm) and BAM ! It started FULL backup (deleting 800+ GB of data). Nothing has been changed on the media disk during that time. Weird !
Logs showing fresh first new backup stuff:
Dec 18 01:03:48 imac com.apple.backupd[95130]: Copied 81.9 GB of 1047.6 GB, 1469 of 1156879 items
Dec 18 02:03:49 imac com.apple.backupd[95130]: Copied 172.8 GB of 1047.6 GB, 1516 of 1156879 items
Dec 18 03:03:50 imac com.apple.backupd[95130]: Copied 264.8 GB of 1047.6 GB, 1563 of 1156879 items
Dec 18 04:03:50 imac com.apple.backupd[95130]: Copied 357.1 GB of 1047.6 GB, 1615 of 1156879 items
Dec 18 05:03:51 imac com.apple.backupd[95130]: Copied 449.1 GB of 1047.6 GB, 1666 of 1156879 items
Dec 18 06:03:51 imac com.apple.backupd[95130]: Copied 541.5 GB of 1047.6 GB, 1696 of 1156879 items
Dec 18 07:03:52 imac com.apple.backupd[95130]: Copied 633.6 GB of 1047.6 GB, 1741 of 1156879 items
Dec 18 08:03:52 imac com.apple.backupd[95130]: Copied 725.6 GB of 1047.6 GB, 1786 of 1156879 items
Dec 18 08:10:55 imac com.apple.backupd[95130]: Copied 1796 files (736.3 GB) from volume Media.
Dec 18 09:03:53 imac com.apple.backupd[95130]: Copied 773.9 GB of 1047.6 GB, 621723 of 1156879 items
Dec 18 10:03:54 imac com.apple.backupd[95130]: Copied 803.6 GB of 1047.6 GB, 936589 of 1156879 items
Dec 18 11:03:54 imac com.apple.backupd[95130]: Copied 878.4 GB of 1047.6 GB, 1019840 of 1156879 items
Dec 18 12:03:54 imac com.apple.backupd[95130]: Copied 951.6 GB of 1047.6 GB, 1107382 of 1156879 items
Dec 18 13:03:54 imac com.apple.backupd[95130]: Copied 1034.6 GB of 1047.6 GB, 1110125 of 1156879 items
Dec 18 13:13:49 imac com.apple.backupd[95130]: Copied 1140722 files (1041.4 GB) from volume Macintosh HD.
Dec 18 13:13:58 imac com.apple.backupd[95130]: 1.72 GB required (including padding), 341.53 GB available
Dec 18 13:13:58 imac com.apple.backupd[95130]: Copied 6 files (0 bytes) from volume Media.
Dec 18 13:14:15 imac com.apple.backupd[95130]: Copied 6665 files (1.7 MB) from volume Macintosh HD.
Dec 18 13:14:17 imac com.apple.backupd[95130]: Copying Lion Recovery set
Dec 18 13:14:42 imac com.apple.backupd[95130]: Backed up Lion Recovery to /Volumes/DeLorean/Backups.backupdb
Dec 18 13:14:45 imac com.apple.backupd[95130]: Starting post-backup thinning
Dec 18 13:14:45 imac com.apple.backupd[95130]: No post-back up thinning needed: no expired backups exist
Dec 18 13:14:45 imac com.apple.backupd[95130]: Backup completed successfully.
Ends.
This backup i Initiated after i woke up, with both system disk and external "media" mounted:
Dec 18 13:22:02 imac com.apple.backupd[5781]: Starting standard backup
Dec 18 13:22:02 imac com.apple.backupd[5781]: Backing up to: /Volumes/DeLorean/Backups.backupdb
Dec 18 13:22:05 imac com.apple.backupd[5781]: 1.70 GB required (including padding), 340.96 GB available
Dec 18 13:22:05 imac com.apple.backupd[5781]: Waiting for index to be ready (100)
Dec 18 13:23:05 imac com.apple.backupd[5781]: Waiting for index to be ready (100)
Dec 18 13:23:48 imac com.apple.backupd[5781]: Copied 6 files (0 bytes) from volume Media.
Dec 18 13:23:55 imac com.apple.backupd[5781]: Copied 1780 files (8.6 MB) from volume Macintosh HD.
Dec 18 13:23:56 imac com.apple.backupd[5781]: 1.37 GB required (including padding), 341.39 GB available
Dec 18 13:23:56 imac com.apple.backupd[5781]: Copied 6 files (0 bytes) from volume Media.
Dec 18 13:23:59 imac com.apple.backupd[5781]: Copied 1596 files (268 bytes) from volume Macintosh HD.
Dec 18 13:24:00 imac com.apple.backupd[5781]: Starting post-backup thinning
Dec 18 13:24:00 imac com.apple.backupd[5781]: No post-back up thinning needed: no expired backups exist
Dec 18 13:24:00 imac com.apple.backupd[5781]: Backup completed successfully.
Ends.. This seems to work like it should.
Now, see the time stamps, i just toke some coffee and came back....
This next backup is done while "Media" drive has been umounted:
Dec 18 13:28:00 imac com.apple.backupd[5962]: Starting standard backup
Dec 18 13:28:00 imac com.apple.backupd[5962]: Backing up to: /Volumes/DeLorean/Backups.backupdb
Dec 18 13:28:01 imac com.apple.backupd[5962]: 1.37 GB required (including padding), 341.39 GB available
Dec 18 13:28:04 imac com.apple.backupd[5962]: Copied 1455 files (78 KB) from volume Macintosh HD.
Dec 18 13:28:04 imac com.apple.backupd[5962]: 1.37 GB required (including padding), 341.39 GB available
Dec 18 13:28:05 imac com.apple.backupd[5962]: Copied 115 files (93 bytes) from volume Macintosh HD.
Dec 18 13:28:05 imac com.apple.backupd[5962]: Starting post-backup thinning
Dec 18 13:28:05 imac com.apple.backupd[5962]: No post-back up thinning needed: no expired backups exist
Dec 18 13:28:05 imac com.apple.backupd[5962]: Backup completed successfully.
Incremental backup seems to finnish ok, without the "Media" drive.
This backup is the third one done just after couple minutes after i mounted the "Media" drive back on:
Dec 18 13:31:49 imac com.apple.backupd[6025]: Starting standard backup
Dec 18 13:31:49 imac com.apple.backupd[6025]: Backing up to: /Volumes/DeLorean/Backups.backupdb
Dec 18 13:31:49 imac com.apple.backupd[6025]: Deep event scan at path:/Volumes/Media reason:must scan subdirs|
Dec 18 13:31:49 imac com.apple.backupd[6025]: Finished scan
Dec 18 13:31:51 imac com.apple.backupd[6025]: 884.92 GB required (including padding), 341.39 GB available
Dec 18 13:31:51 imac com.apple.backupd[6025]: No expired backups exist - deleting oldest backups to make room
Dec 18 13:31:52 imac com.apple.backupd[6025]: Deleted backup /Volumes/DeLorean/Backups.backupdb/imac/2011-12-18-131415 containing 8.7 MB; 341.40 GB now available, 884.92 GB required
Dec 18 13:31:52 imac com.apple.backupd[6025]: Removed 1 expired backups so far, more space is needed - deleting oldest backups to make room
Dec 18 13:32:02 imac com.apple.backupd[6025]: Deleted backup /Volumes/DeLorean/Backups.backupdb/imac/2011-12-18-132359 containing 736.30 GB; 1.05 TB now available, 884.92 GB required
Dec 18 13:32:02 imac com.apple.backupd[6025]: Deleted 2 backups containing 736.31 GB total; 1.05 TB now available, 884.92 GB required
Dec 18 13:32:02 imac com.apple.backupd[6025]: Backup date range was shortened: oldest backup is now Dec 18, 2011
Dec 18 13:35:02 imac com.apple.backupd[6025]: Copied 526 files (4.3 GB) from volume Media.
Dec 18 13:35:03 imac com.apple.backupd[6025]: Backup canceled.
I canceled that scan(it would take about 12 hours again
OK. Couple questions:
- Why time machine does this deep scan? What does it actually mean?
- Why time machine thinks that it needs to do a 800GB worth of new backup. Those data have not changed a bit (they are movies).
- How its related to the unmount/mounting the Media drive?
I would really hope some answers from somebody. I have strugled with this issue almost a month now.
Thanks!

ECONOMAN wrote:
Time Machine Incremental Backups S...L...O...W and seem to bog down things so as to make the machine unusable. Why doesn't it simply backup changes, not the entire drive (less exclusions)?
Normally, that's exactly what it does. So start by calming down.
And, it gobbles processing power so I can't even check mail.
Can you schedule the frigging thing or do I just stop it all the time in order to get anything done?
It's cute, but kind of worthless.
First, are these backups larger than you think they ought to be? If so, that's likely at least part of your problem. See #D4 of the Time Machine - Troubleshooting *User Tip,* also at the top of this forum, for some possible causes and a way to find out just what's going on.
If that's no help, or they're still slow, try all the things in #D2 of the Troubleshooting Tip.
If that doesn't help, post back with details, including all the messages, your setup (especially the destination for the backups), what you've done, and the results.

Can I use Time Machine to backup ONLY an external drive?

I am having problems with the internal HD on my iMac and Disk Utility is telling me I need to reformat the drive and restore from backup. Only problem is that my 3TB Lacie Thunderbolt drive I was using for Time Machine recently failed (think it may have happened during an electrical storm brownout). Yep, I know, ***** to be me
The issues with the internal HD are preventing the iMac from booting and I would prefer not to have to purchase various repair software to find one that really works such as Disk Warrior or similar ((despite it getting very good reviews). I suspect it make be HFS corruption but no way to really tell that I am aware of.
I have setup an external drive with Yosemite and booted from that so now my old internal drive is seen as an "external drive".
I am using Disk Utility to make an image copy to a new 3TB external drive I purchased. Writing the DMG is going to take some time.
What I would like to do is to set up Time Machine to backup to a separate external 3TB hard drive (the second one I purchased) and have TM create a backup of ONLY the old internal drive - not the new system as well as the old internal unit.
Is this possible and if so can anyone advise how to do this. Does not seem I can exclude the system drive I am now booted from so that it is not backed up. (This makes sense that TM would be designed this way given its primary purpose is to backup a system).
If TM cannot be configured in this way, is there another option I can use?
Thanks
Andrew

Thanks for that advice. I have heard of it but a friend who does IT support at a University nearby suggested using Disk Utility to save an image - hence this is currently underway at present. Once this is finished I will try Carbon Copy Cloner.
I have another friend who has an older version of CCC - do you know if an old version will work ok or if only the latest supports Yosemite?
Also once I have the clone completed from CCC, is the process then to reformat the old internal drive and then clone from the CCC external drive back to the internal and then reboot and trust all is well?
Appreciate your help Csound1.
Regards
Andrew

On imac 10.6.8 using current version of Aperture. How can I access the Aperture Library on my external hard drive that I use with time machine for backup? I can only access the application but not the library..

On imac 10.6.8 using current version of Aperture. How can I access the Aperture Library on my external hard drive that I use with time machine for backup? I can only access the application but not the library..

Go into Time Machine (the program not the bundle on the extrnal disk) and using Time Machine's browser go to the Folder where the library lives. You could look in the library bundle in Time Machine but that won't really tell you much,
If you want to make sure it truely has backed up your library you will need to restore it and open the restored library with Aperture.
If all this still has you confused you need to read up on Time Machine in order to get a feel for how it works, for what it is doing and for how to restore files from it.

How do I use time machine to backup to an external hard drive plugged into my airport extreme

How do I use time machine to backup to an external hard drive plugged into my airport extreme? I used to be able to but now time machine will not recognize my hard drive to select as a backup when plugged into my airport extreme. I'm not sure what happened or changed. Any help is greatly appreciated. Thanks

First thing to do is go to the Pondini tips page, then follow the link to his full TM site for all the details.

HT201250 I have two external hard drives. One is my Time Machine backup drive. The other I use for external storage of files (documents, photos, movies, etc). Can I set Time Machine to backup BOTH my Mac hard drive and my other external hard drive?

I have two external hard drives. One is my Time Machine backup drive. The other I use for external storage of files (documents, photos, movies, etc). Can I set Time Machine to backup BOTH my Mac hard drive and my other external hard drive?

Yes you can make multiple backups on one hard drive, for example if you’ve 1TB hard drive installed in your PC and you’ve two Mac Machines with 500GB drive each then you just make two backup images with size of 500GB each.
http://www.halfspot.com/use-your-pc-hard-drive-for-time-machine-backup/

Using time machine to backup Logic Projects

Hi
I was wondering if it is possible to use time machine to backup my Logic Projects. I have a seperate internal drive that I use to keep all my user data on, like my Logic projects. I want to use time machine to back up these projects onto a external firewire drive.
Can timemachine only backup your systems drive and therefore I would need to have my Logic projects based stored on it?

Yes - time machine can back up any drive. I am using 3 drives: system drive, a USB2 drive for Time machine backups and a firewire 800 drive for Logic Studio projects, instruments, samples, audio, etc. TM backs up my system and FW drives to the USB drive.
Time machine options (in system preferences) allow you to exclude/include drives so you just need to set it to include your second internal drive.
The only thing I'm not sure of is whether this effects the loop browser. Oddly, when I was experimenting with using aliases for Apple loops, Logic actually found the TM backup files when it couldn't locate the original GB loops! After some file moving and index deleting I cleared all loops but now I have duplicate entries again in Logic - possibly due to TM, but I have not verified this.
-Scott

Using Time Machine to backup a iMac G5 and restore to an intel iMac

Is it possible to use Time Machine to backup my iMac G5 and restore my backup to a new intel iMac?
The reason being is that I my mother-in-law's company bought her a new intel Mac and she wants to trade with me since she only uses her Mac for e-mail, photos and accounting software.
I was thinking of making sure her data is preserved by using the migration assistant to transfer her data to my iMac G5 and then using my time machine backup to restore to her intel iMac. I have concerns about this method after reading about the intel/powerpc issues with time machine. I also have concerns that perhaps the version of MacOS 10.5 installed to my iMac G5 will not be optimized for intel.

Well, not entirely. You cannot install or restore a PPC version of OS X to an Intel Mac because the PPC system will not work on an Intel Mac. You can copy your personal files, most preference files, and third-party applications (although it would be preferable to update all PPC-only apps to universal binaries which perform better on Intel machines.
Another possible concern is if your mother's company is transferring the ownership to her or simply purchasing the unit for her to use. In the latter case the computer belongs to the company, not your mother. She cannot then give it to you because it isn't hers. This problem should be resolved beforehand because the company may one day want the computer back.
Folders You Can Move to Your new Mac
From the Home folder copy the contents of Documents, Movies, Music, Pictures, and Sites.
In your /Home/Library/ folder:
/Home/Library/Application Support/AddressBook (copy the whole folder)
/Home/Library/Application Support/iCal (copy the whole folder)
Also in /Home/Library/Application Support (copy whatever else you need including folders for any third-party applications)
/Home/Library/Keychains (copy the whole folder)
/Home/Library/Mail (copy the whole folder)
/Home/Library/Preferences/ (copy the whole folder)
/Home /Library/iTunes (copy the whole folder)
/Home /Library/Safari (copy the whole folder)
If you want cookies:
/Home/Library/Cookies/Cookies.plist
/Home/Library/Application Support/WebFoundation/HTTPCookies.plist
For Entourage users:
Entourage is in /Home/Documents/Microsoft User Data
Also in /Home/Library/Preferences/Microsoft
For FireFox:
/Home/Library/Applications Support/FireFox
/Home/Library/Preferences/org.mozilla.firefox.plist
Credit goes to another forum user for this information.

Can I set Time Machine to backup both my hard drive and an external hard drive?

Hi. I've been working with a lot of family video lately and my internal hard drive has filled up significantly. iMovie doesn't seem to have a good archiving facility like Adobe InDesign which I use at work were all the relevant files are gathered together into one folder. Apple advised me to relocate my movie files to an external hard drive and herein lies my query.
Is there a way for me to set Time Machine to backup both my iMac's internal drive and the external hard drive that would contain my movie files? I've been using Time Machine for my backups for a few years now, but backing up the external as well has me stumped. If Time Machine could be used then all the necessary file accociations etc would be safely backed up as well - that's why I don't want to have to manually backup the external.
Anyone have any ideas? Thanks!

7string48 wrote:
Thanks so much Pondini!! You just quickly answered a question that none of the Mac people in 3 stores or Apple Care have been able to answer.If you can format it HFS+ (any variation of Mac OS Extended), it will work. If not, it won't.
I'm not too surprised about the Apple Stores, as they don't get much training on Time Machine. But AppleCare sure ought to know.
Oh...what about if the external drive is an array...like a Drobo with it's own proprietary formatting...I guess that would not work...??
I've never used a Drobo. A number of folks here have used them as their Time Machine drives, but I don't recall seeing anyone try to back one up with TM, so can't say for sure. But if you can format it as HFS+ (any variation of Mac OS Extended), it will work. If not, it won't.
At least part of the reason is, Time Machine uses the File System Event Store, a hidden log of changes that OSX keeps on each Mac-formatted disk/partition, to figure out what's changed and needs to be backed-up. See How Time Machine works its Magic for details.
See Time Machine - Frequently Asked Question #32 for details and considerations of backing-up multiple volumes with Time Machine.
However, even if it will work, that may not be your best strategy, depending on your circumstances:
Since Time Machine keeps copies of things you've changed or deleted, the destination needs to be considerably larger than the data being backed-up. How much larger varies widely depending on how you use your Mac, but a general "rule of thumb" is, it needs at least twice the space to be able to keep a reasonable "depth" of backups for you.
If you have a large internal HD, fairly full, plus a large external HD, and the files on the external don't change frequently, you might want to use Time Machine for the internal, and a different app to a different disk or partition, on a different schedule, for the external. Especially if space is a consideration, you might not need to keep previous versions of files on the externals. See Time Machine - Frequently Asked Question #27 for some alternatives.

Can I use time machine to backup on my server HD?

I've mac Leapard with Time Machine but never made use of it because:
- I don't have and don't want to have an external HD.
- Don't have Time Capsule, and cannot afford it.
Yet I was wondering if it was somehow possible to use Time Machine, to backup directly to my server (online) for example.

-(.)^(.)- wrote:
Time Machine backups are NOT supported for NAS devices except Time Capsule or a USB HDD connected to an AirPort Extreme Base Station. All other options are hacks.
I would add that even if a network drive were available, unless it was formatted HFS+ with either GUID or APM depending, it would not be acceptable anyway for TM.

Can I use a 2tb external drive with Time Machine to backup my Mac Mini (256gbSSD + 2tbHDD)?

Can I use a 2tb external drive with Time Machine to backup what I have on my Mac Mini?
My Mac Mini has one 256 SSD and one 2tb HDD. I want to use Time Machine to do a backup of everything.
Would an external 2tb My Passport Drive by Western Digital work for the backup?
It seems like it would not work because the total storage on the Mac Mini is 2304 gigabytes (SSD + HDD).
And the external Western Digital drive is only 2048 in gigabytes versus 2304 gigabytes the Mac Mini has.

No. A Time Machine backup drive should have at least twice the capacity of the drive it backs up. You would need at least a 4 TB backup drive for Time Machine.
Might I suggest as an alternative that you not use Time Machine but a third-party backup utility that simply overwrites older files with new ones such that the backup drive can be the same capacity as the drive backed up.
Suggested Backup Software
1. Carbon Copy Cloner
2. Get Backup
3. Deja Vu
4. SuperDuper!
5. Synk Pro
6. Tri-Backup
Others may be found at MacUpdate.
Visit The XLab FAQs and read the FAQ on backup and restore. Also read How to Back Up and Restore Your Files.

Time Machine:The backup disk ran out of space unexpectedly. .....

Hi,
I upgraded to Mountain Lion when it was released and yesterday I began getting this notice from Time Machine:
"The backup disk ran out of space unexpectedly. Time Machine will try to make more space available by removing expired backups during the next scheduled backup."
I have a one terra external hard drive with exclusively Time Machine. It says it has 3.4 gigabytes available, but isn't deleting old backups and making room for new, like before. I tried the "encrypting" solution, but it still keeps on giving me this message. Should I erase and format? If so, what option should I chose to format?
My Hard Drive has 240 gigabytes, so 1Tb should be more than enough.
Thank you!
Gloria

SuperDuper and Time Machine are two completely different backup utilities. If you want something like what SuperDuper does then don't use Time Machine. You have many other options that won't use up all the space on your backup drive:
Backup Software Recommendations
Carbon Copy Cloner
Data Backup
Deja Vu
SuperDuper!
Synk Pro
Tri-Backup
Others may be found at VersionTracker or MacUpdate.
Visit The XLab FAQs and read the FAQ on backup and restore. Also read How to Back Up and Restore Your Files.
Do the following to erase your drive:
Erase a Drive
1. Open Disk Utility in your Utilities folder.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed.

Is there a way to use Time Machine to backup my Macbook Pro to an external drive connected to my iMac?

I recently purchased a Seagate Goflex Desk 2TB and I've already used Time Machine to backup my iMac running 10.5.8 to the drive. Is there a way to backup my Macbook Pro running 10.6.8 to the drive using Time Machine while the drive is still connected to my iMac? Any help is appreciated!

Choose Connect to Server from the Finder's Go menu, provide the first computer's IP address, log in, and set it up in the Time Machine pane of System Preferences.
(59008)

Time Machine Slow Backup

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