Time Machine Doubles Backup Events

I have a WD MyBook Duo which I am using as my Time Machine target drive. The Duo is a Raid 0 configuration consisting of two 6TB drives, so the system sees it as a single 12TB drive. What is happening is that every time Time Machine does a back up, it records two copies of the event, one of which contains the backup information, the other of which is empty. I checked with WD and they say that the issue is not with the drive itself but with Time Machine (which is sorta what I was figuring to begin with). Although Time Machine recognizes the drive as a single 12 TB unit in the configuration/preference panel and recognizes it as a 12 TB unit in reporting and most other aspects, it seems that somewhere internally it is seeing the two physical drive components and showing the data being written across the two physical drives as two separate, but identically named (date/time) events.
Has anyone else had this issue and come up with a satisfactory solution?

First, if you want to clean your Mac, get rid of "CleanMyMac."
After a full-system restore, you should have automatically inherited the backup history of the previous system when the next snapshot was taken. If that didn't happen, follow the applicable directions here:
"Reconnecting" to your backups

Similar Messages

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.

Time Machine loses backups after a full restore.

Greetings
(Possibly due to parallels, my Imac was running so slow or hanging. As a result,) I ran a full system restore from Time Machine. It worked well. Then I thought I would try a better restore date and used that. After this successful restore, I now notice that all earlier backups have been deleted/lost - or at least they are not available on the Time Machine,
The only event in between was to add to the time machine a windows based account file.
Imac seems to run OK now, but files from around July to now are missing.

After a full restore, Time Machine may start a new backup. You can ctrl-click the TM icon and +Browse Other Time Machine Disks+ to view your old backups. I can't be sure, but you could try to go to TM Preferences and Change Disks to see if you can continue to back up to your old TM folder/sparsebundle. Otherwise, you will have 2 backups now, the old one being dormant, but accessible.

Time Machine thinks backup disk is full but its not

I just purchased a new 1 Terabyte hard drive for backup. In the past I backed up both my internal Mac harddrive (250 Gb with 8gb free) and an external iOmega archive drive (DRIVE H 320Gb with 41Gb free) to a 500Gb Lacie drive. I purchased an iOmega 1 Terabyte drive (DRIVE G) because the Lacie drive was full. I went into Time Machine and changed the backup drive to the G one terabyte drive and did a full backup of my internal hard drive. When I did this I did not have the external H archive drive attached so Time Machine didn't back that up. I did it that way because I wanted to first backup the internal drive then do some work and then go backup the external archive drive over night. I plugged the H archive drive in, so it show up in the finder and then told Time Machine to Backup Now. It started the back up but right after doing the initial computations when it actually started backing up I got the standard error message that "the backup disk ran out of space unexpectedly..." I've double checked that the backup disk is set correctly in Time Machine to the 1Tb G drive and when I do a Get Info on the G drive it shows Capacity: 1TB, Available: 713.54 GB.
Is it possible something is wrong with the new drive? Can I test that?

Its funny how sometimes asking a question can prompt your thinking. As soon as I finished posting this I thought "of course Disk Utility". I ran a check disk and got the following error message:
Unused node is not erased (node = 107)
I did a restore which corrected the error. Turned Time Machine back on and its backing up the rest of my data now.

Time Machine - Preparing backup - It's endless

My C2D Mac Mini is hanging on Time Machine - Preparing Backup for the second time since "Upgrading" to 10.5.2
I had to re-format my backup disk last time and start all the backups again.
Here is an extract from the console log:
29/04/2008 23:50:13 /System/Library/CoreServices/backupd[1094] Starting standard backup
29/04/2008 23:50:13 /System/Library/CoreServices/backupd[1094] Backing up to: /Volumes/LaCie Disk/Backups.backupdb
29/04/2008 23:50:15 /System/Library/CoreServices/backupd[1094] Event store UUIDs don't match for volume: Macintosh HD
29/04/2008 23:50:15 /System/Library/CoreServices/backupd[1094] Node requires deep traversal:/ reason:kFSEDBEventFlagMustScanSubDirs|kFSEDBEventFlagReasonEventDBUntrustable|
Does anyone recognise this? I'm a Mac novice so I don't understand what it all means. I hope I don't have to reformat and start again as I was converted to Mac from PC on the advice that "A Mac Works!"
My backup drive is a 500GB Lacie Mini if that is of any relevance. Spotlight is told not to index the drive and also the Lacie drive is told not to back itself up.
Can anyone help as it's driving me nuts!

Are Lacie really that bad? I thought that the main reason they are mentioned in these forums is that Lacie are one of the only brands of external storage that apple actively promote through their own web stores so there a good chance that quite a few Mac users will buy one. Anyway I can't afford to buy another Hard Drive at the moment and the lacie works perfectly apart from Time Machine.
The problem seems to be with Mac OS the more I delve into these forums and more importantly the 10.5.2. update which is where Time Machine appears to be providing users with a lot of troubles.
The Apple support self service on the website is far from comprehensive as I guess they want you to purchase Apple Care for ongoing support after the 90 days initial period but come on apple give us a break and sort it out or provide a support email address for specific problems!

Time Machine same backup size every time

Anyone have any idea why Time Machine would backup the same amount every time? Every hour mine backs up 1.8 GB, unless I've added more than that to my hd.
I only back up the internal drive on my macbook to a 500 GB Time Capsule via wifi (802.11n only, 5GHz). Not that I figured it would make a difference, but it still does it if backed up via ethernet.
I've also noticed that as soon as it completes the backup, it will backup all over again - and not because an hour has passed. I'm not sure if it does this every time (but I think i does), or if it does it more than twice when it happens.
Thanks in advance!

See if the following might give you some ideas as to why...
*_Incremental Backups Seem Too Large!_*
Open the Time Machine Prefs on the Mac in question. How much space does it report you have "Available"? When a backup is initiated how much space does it report you need?
Now, consider the following, it might give you some ideas:
Time Machine performs backups at the file level. If a single bit in a large file is changed, the WHOLE file is backed up again. This is a problem for programs that save data to monolithic virtual disk files that are modified frequently. These include Parallels, VMware Fusion, Aperture vaults, or the databases that Entourage and Thunderbird create. These should be excluded from backup using the Time Machine Preference Exclusion list. You will, however, need to backup these files manually to another external disk.
If you do a lot of movie editing, unless these files are excluded, expect Time Machine to treat revised versions of a single movie as entirely new files.
If you frequently download software or video files that you only expect to keep for a short time, consider excluding the folder these are stored in from Time Machine backups.
If you have recently created a new disk image or burned a DVD, Time Machine will target these files for backup unless they are deleted or excluded from backup.
*Events-Based Backups*
Time Machine does not compare file-for-file to see if changes have been made. If it had to rescan every file on your drive before each backup, it would not be able to perform backups as often as it does. Rather, it relies on a process called FSEvents. This is a system log that records changes that occur with all the directories on your Mac. Moving / copying / deleting / & saving files and folders creates events that are recorded in this log. At the beginning of each backup, Time Machine simply looks at this log to determine what has changed since the last backup. [http://arstechnica.com/reviews/os/mac-os-x-10-5.ars/14]
Installing new software, upgrading existing software, or updating Mac OS X system software can create major changes in the structure of your directories. Every one of these changes is recorded by the OS as an event. Time Machine will backup every file that has an event associated with it since the installation.
Files or folders that are simply moved or renamed are counted as NEW files or folders. If you rename any file or folder, Time Machine will back up the ENTIRE file or folder again no matter how big or small it is.
George Schreyer describes this behavior: “If you should want to do some massive rearrangement of your disk, Time Machine will interpret the rearranged files as new files and back them up again in their new locations. Just renaming a folder will cause this to happen. This is OK if you've got lots of room on your backup disk. Eventually, Time Machine will thin those backups and the space consumed will be recovered. However, if you really want recover the space in the backup volume immediately, you can. To do this, bring a Finder window to the front and then click the Time Machine icon on the dock. This will activate the Time Machine user interface. Navigate back in time to where the old stuff exists and select it. Then pull down the "action" menu (the gear thing) and select "delete all backups" and the older stuff vanishes.” (http://www.girr.org/mac_stuff/backups.html)
*TechTool Pro Directory Protection*
This disk utility feature creates backup copies of your system directories. Obviously these directories are changing all the time. So, depending on how it is configured, these backup files will be changing as well which is interpreted by Time Machine as new data to backup. Excluding the folder these backups are stored in will eliminate this effect.
*Backups WAY Too Large*
If an initial full backup or a subsequent incremental backup is tens or hundreds of Gigs larger than expected, check to see that all unwanted external hard disks are still excluded from Time Machine backups. Time Machine will attempt to backup any hard disk attached to your Mac, including secondary internal drives, that have not been added to Time Machines Exclusion list.
This includes the Time Machine backup drive ITSELF. Normally, Time Machine is set to exclude its’ own backup disk by default. But on rare occasions it can forget. When your backup begins, Time Machine mounts the backup on your desktop. (For Time Capsule/AirDisk users it appears as a white drive icon labeled something like “Backup of (your computer)”.) If, while it is mounted, it does not show up in the Time Machine Preferences “Do not back up” list, then Time Machine will attempt to back ITSELF up. If it is not listed while the drive is mounted, then you need to add it to the list.
*Recovering Backup Space*
If you have discovered that large unwanted files have been backed up, you can use the Time Machine “time travel” interface to recovered some of that space.
Launch Time Machine from the Dock icon.
Initially, you are presented with a window that represents “Today (Now)”. DO NOT make changes to file while you see “Today (Now)” at the bottom of the screen.
Click on the window just behind “Today (Now)”. This represents the last successful backup and should display the date and time of this backup at the bottom of the screen.
Now, navigate to where the unwanted file resides.
Highlight the file and click the Actions menu (Gear icon) from the toolbar.
Select “Delete all backups of <this file>”.
*FileVault / Boot Camp / iDisk Syncing*
Note: Leopard has changed the way it deals with FileVault disk images, so it is not necessary to exclude your Home folder if you have FileVault activated. Additionally, Time Machine ignores Boot Camp partitions as the manner in which they are formatted is incompatible. Finally, if you have your iDisk Synced to your desktop, it is not necessary to exclude the disk image file it creates as that has been changed to a sparsebundle as well in Leopard.
Let us know if this resolved your issue.
Cheers!

Cannot open time machine; message on screen: time machine in backup. I want to find last 12 mos. of pictures.

cannot open application to time machine: Message on screen: time machine in backup.
Purpose to get into time machine; is to pickup lost photos

northernresort wrote:
I workedwith apple support on the phone it believe the backup is corrupt.
Yup, sure sounds like it.
It does have a .sparsebundle for the machine that is backup up. There is only 52G free on the 1T time capsule, so it seems that the data is there,
That's good, obviously. Often it won't mount at all, and you're in a very large pickle.
I'm not seeing nor beleive I'm having a hardware issue with the time capsule.
Probably not.
I'm wondering if I have some sort of version issue between 10.7.x that the Time machine on the time capsule was created with and 10.8.4
No, at least not that's been reported. A sparsebundle is a sparsebundle, as far as we can tell.
I don't use hdiutil or fsck, so bear with me. Drag the sparsebundle into Disk Utility's sidebar and try Repair Disk on it. See what messages it shows. (They may not appear in the window; click the Log icon or select Window > Show Log from the menubar.)
Do you have a copy of DiskWarrior? It can operate on a sparsebundle, and sometimes can fix things Disk Utility (and hdiutil or fsck) can't.
I haven't found any good way to parse out/copy files from a sparse bundle
If you double-click it, does the disk image (named "Time Machine Backups") mount (should appear on your Desktop and/or Finder sidebar)? If it does, can you open it via the Finder? If so, you'll find the usual Backups.backupdb folder inside, with one folder named for your Mac, and inside that all the date-stamped backup folders, each with one folder per drive that was backed-up, and inside that the full folder structure.
If so, you can probably drag & drop, but depending on what kind of damage there is, and where, that may not work well, if at all.
Best, of course, is if you can repair it and just do a full restore.

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.

Time Machine deleting backups?

When Time Machine is finishing taking a backup of my Mac, why does it delete something, maybe old backups, even if I have nearly 200GB free space on my external disk?

And now it's stuck with 18,9MB and canceled
6.4.2014 13.36.37,783 com.apple.backupd[1294]: Starting automatic backup
6.4.2014 13.36.37,895 com.apple.backupd[1294]: Attempting to mount network destination URL: afp://;AUTH=No%20User%20Authent@WDMyCloud._afpovertcp._tcp.local/TimeMachineBac kup
6.4.2014 13.37.06,076 com.apple.backupd[1294]: Mounted network destination at mount point: /Volumes/TimeMachineBackup using URL: afp://;AUTH=No%20User%20Authent@WDMyCloud._afpovertcp._tcp.local/TimeMachineBac kup
6.4.2014 13.37.06,099 mds[79]: (Normal) Volume: volume:0x7fd3e386f000 ********** Bootstrapped Creating a default store:0 SpotLoc:(null) SpotVerLoc:(null) occlude:0 /Volumes/TimeMachineBackup
6.4.2014 13.41.52,245 com.apple.backupd[1294]: Disk image /Volumes/TimeMachineBackup/Samu - MacBook Air.sparsebundle mounted at: /Volumes/Time Machine -varmuuskopiot
6.4.2014 13.42.13,441 com.apple.backupd[1294]: Backing up to /dev/disk2s2: /Volumes/Time Machine -varmuuskopiot/Backups.backupdb
6.4.2014 13.47.45,821 com.apple.backupd[1294]: Will copy (2,6 GB) from Macintosh HD
6.4.2014 13.47.45,845 com.apple.backupd[1294]: Found 1010 files (2,72 GB) needing backup
6.4.2014 13.47.46,251 com.apple.backupd[1294]: 3,51 GB required (including padding), 183,9 GB available
6.4.2014 13.52.22,072 com.apple.prefs.backup.remoteservice[1380]: assertion failed: 13C64: liblaunch.dylib + 25164 [38D1AB2C-A476-385F-8EA8-7AB604CA1F89]: 0x25
6.4.2014 13.52.22,090 com.apple.prefs.backup.remoteservice[1380]: assertion failed: 13C64: liblaunch.dylib + 25164 [38D1AB2C-A476-385F-8EA8-7AB604CA1F89]: 0x25
6.4.2014 13.52.22,332 com.apple.prefs.backup.remoteservice[1380]: Bogus event received by listener connection:
<error: 0x10aae4b50> { count = 1, contents =
"XPCErrorDescription" => <string: 0x10aae4e60> { length = 18, contents = "Connection invalid" }
6.4.2014 13.56.31,228 com.apple.backupd[1294]: Cancellation timed out - exiting
6.4.2014 13.56.31,245 com.apple.backupd-helper[869]: XPC error for connection com.apple.backupd.xpc: Connection interrupted
6.4.2014 13.56.31,245 com.apple.backupd-helper[869]: Not starting scheduled Time Machine backup: Failed to send message to backupd
And yeah, that deleting takes hours (about 10 last time).

Confused about how Time Machine merges backups

Okay, I understand how TM works and that it merges many daily backups into one days worth by the next day. I've been doing some experimenting with creating a file on my desktop, backing up with TM, and then deleting it and emptying bin. I try to access this file the next day with Time Machine but it is if it never existed. Time machine shows no sign of it. It's there when I have access to the hour by hour updates. But by the next day, when everything from the previous day merged, it's gone. Am I missing the point of Time Machine? Wasn't it created for situations when you delete a file accidentally and want to bring it back sometime in the near future? What am I missing here? Thanks for your help!

mikemac22,
The last hourly backup in a given day is kept as the "daily" backup. The last daily backup in a given week is kept as the "weekly" backup, and these are kept as long as possible.
Time Machine is mainly intended to be a backup and recovery tool. Yes, if you mistakenly delete a file, it can be retrieved. However, the importance of a file is based on the length of time it remains on your "source." I doubt Apple set out to make it this way, but rather made the decision to go with this paradigm as opposed to the alternative.
You see, there is an inherent trade-off in any backup solution that works as Time Machine does. It probably would have been easy to make Time Machine "consolidate" backups, but then disk space would be consumed at a much faster rate. At some point, some decision must be made concerning the question, "when can a file be deleted from the backup?" In the case of Time Machine, as it is, a file becomes important enough to keep when it has remained on the "source" for at least one week. If it is kept for a shorter duration, and not restored, it will be deleted at some point.
On the other end of the spectrum, files that exist only in the backup will be deleted entirely when the oldest remaining backup that contains them is deleted. This "thinning" must be done in order to make room for new backups. If this action was not taken, Time Machine would just keep filling up drives, and quickly.
Time Machine is not an "archive" utility, in any sense of the term. It is not intended to maintain multiple versions of a given file for your convenience. What it is intended to do is to allow for the (almost) immediate recovery of your entire installation- user files, applications, and all- in the event you must format (erase) your source, replace your internal hard drive, or even swap computers completely. As a bonus, it will allow you to choose from several (perhaps many, depending on the size of the backup volume) backups going back in time when you do have to resort to a "Restore."
Another bonus, of course, is the ability to restore individual files that you might mistakenly delete.
Scott

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

Time Machine Doubles Backup Events

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