Hi Steven,

How To Repair the Time Machine  File System on a disk, partition, or sparse 
bundle disc image(not the physical hardware).

<http://web.me.com/pondini/Time_Machine/A5.html>

Sent from Ronni's iPad

On 22/02/2011, at 5:25 AM, Steven Knowles <emai...@knowles.net.au> wrote:

> Thanks Ronni.
> 
> Yes, 1TB, spot on. I'm a decade behind the times.
> 
> Sadly none of the A through D suggestions were applicable in my case, however 
> TC did eventually reach the end of a back up it seems, though still behaving 
> badly, as in slow. Right now I'm trying to see if Disk Utility can make an 
> assessment. Currently "checking catalog file" with just 1 day and 4 hours 
> estimated time remaining! Maybe my TC has reached the end of its useful life 
> - nearly 3 years old now. We'll see.
> 
> Cheers, Steven
> 
> 
> On 21/02/2011, at 8:24 PM, Ronda Brown wrote:
> 
>> Hi Steven,
>> 
>> On 21/02/2011, at 4:01 PM, Steven Knowles wrote:
>> 
>>> 
>>> I have a MacBook Pro running 10.6.6 backing up to a 1GB TC (running 
>>> software version 7.5.2).
>> 
>> I guess you mean a 1TB Time Capsule ;-)
>>> 
>>> Suddenly the backing up process has slowed to an absolute crawl, even when 
>>> connected via ethernet. I've rebooted the TC a few times, no improvement.
>> 
>> A) Did you have a ‘failed backup’ just prior to this slowing down?
>> 
>> The first backup after one that failed or was cancelled may appear to be 
>> running very slowly, while Time Machine "recovers" the partial "in.Progress" 
>> file from the previous one.  
>> Give it a long time before deciding there's a problem.
>> 
>> B) The first backup after removing certain exclusions, especially System 
>> Folders and/or Applications, can appear to be extremely slow, as they 
>> involve tens of thousands of mostly very small files.  
>> It may also seem to report that it’s reached the amount to be backed-up, but 
>> then the amount will increase (often very slowly).
>> 
>> C) Did you notice if Spotlight was indexing when the slowdowns started?
>> Exclude it from Spotlight, via System Preferences > Spotlight > Privacy.
>> Spotlight might decide to start indexing the backup volume while the backup 
>> is in progress, causing a huge slowdown in backup speed (doubling or even 
>> quadrupling the required time, not to mention sucking up CPU time).
>> 
>> The solution? Exclude all backup volumes, and remember that after erasing a 
>> drive, you’ll have to re-exclude it; Spotlight has the temerity to forget 
>> about the excluded volume once it’s erased, even if the name remains the 
>> same.
>> 
>> D) If you’re using the Directory Protection feature of Tech Tool Pro, 
>> exclude your Time Machine volume from it. 
>> It can slow your backups down significantly, and it won’t help fix a problem 
>> there, anyway. 
>> In addition, you probably want to exclude its files from Time Machine 
>> backups, as they may cause large backups.
>> 
>>> 
>>> The TC has 270GB of space available, so I don't see that as an issue.
>>> 
>>> Any suggestions as to what the cause of slowness might be? Trying to avoid 
>>> a full reformat of the TC if I can.
>> 
>> Cheers,
>> Ronni
>> 
>> 17" MacBook Pro  Intel Core i7
>> 2.66GHz / 8GB / 1067 MHz DDR3 / 500GB Serial ATA Drive @ 7200rpm
>> 
>> OS X 10.6.6 Snow Leopard
>> Windows 7 Ultimate (under sufferance)
>> 
> 
> 
> 
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