Register FAQ / Rules Forum Spy Search Today's Posts Mark Forums Read
Go Back   MacRumors Forums > Apple Hardware > Notebooks > MacBook Air

Reply
 
Thread Tools Search this Thread Display Modes
Old Aug 10, 2011, 08:50 PM   #1
wallny
macrumors newbie
 
Join Date: Aug 2011
Encrypted Time Machine Backup taking so LONG!!

Just bought a WD 1TB portable USB HDD. I plugged it in to do the first time Time Machine backup. The backing up process is ok: 20GB data in about 15 mins. But the encryption process is taking forever.

It seems like a 2-step process: system copies your data to the external disk then encrypts the data.

It's been 2hours but the encrypting only finished 27%. I guess it'll take at least another 5 hours to finish the whole thing.

Will it take so long to do incremental backup as well? Every time I finish the backup in a few minutes but have to wait for hours for the encryption?

Is it normal? What happens if i unplug the disk while encrypting is still going on? Will the encryption resume next time I plug it back in again?

What's the bottleneck here? I looked at Activity Monitor, CPU's been very low usage. So I guess it's the USB2.0 that limits the encryption speed? Or the hard drive itself?

Thanks!
wallny is offline   0 Reply With Quote
Old Aug 10, 2011, 09:11 PM   #2
jsolares
macrumors 6502a
 
Join Date: Aug 2011
Location: Land of eternal Spring
Quote:
Originally Posted by wallny View Post
Just bought a WD 1TB portable USB HDD. I plugged it in to do the first time Time Machine backup. The backing up process is ok: 20GB data in about 15 mins. But the encryption process is taking forever.

It seems like a 2-step process: system copies your data to the external disk then encrypts the data.

It's been 2hours but the encrypting only finished 27%. I guess it'll take at least another 5 hours to finish the whole thing.

Will it take so long to do incremental backup as well? Every time I finish the backup in a few minutes but have to wait for hours for the encryption?

Is it normal? What happens if i unplug the disk while encrypting is still going on? Will the encryption resume next time I plug it back in again?

What's the bottleneck here? I looked at Activity Monitor, CPU's been very low usage. So I guess it's the USB2.0 that limits the encryption speed? Or the hard drive itself?

Thanks!
Remember that it's encrypting the entire drive even the empty space, you should have no problems after it's finished tho.
jsolares is offline   0 Reply With Quote
Old Aug 10, 2011, 09:34 PM   #3
wallny
Thread Starter
macrumors newbie
 
Join Date: Aug 2011
Quote:
Originally Posted by jsolares View Post
Remember that it's encrypting the entire drive even the empty space, you should have no problems after it's finished tho.
Thanks!

Yes I created the partition as "Mac OS Extended (Journaled)", it's "Mac OS Extended (Journaled, Encrypted)" now.
wallny is offline   0 Reply With Quote
Old Aug 10, 2011, 11:04 PM   #4
JayMysterio
macrumors 6502
 
Join Date: Apr 2010
Location: Rock Ridge
I ran into that myself last night. It took hours ( 5+ ) to finally encrypt, and this after the time machine back up itself. I also didn't take into account that I left time machine on, so every hour it was backing up as well. Turned off time machine, extended the sleep duration, and waited patiently. Now my new drive is encrypted and working fine.
__________________
Moto X  '10 & '12 Mac Mini  '11 13" MacBook Air 128GB  32GB iPad Mini Retina
JayMysterio is offline   0 Reply With Quote
Old Aug 10, 2011, 11:58 PM   #5
misterneums
macrumors 6502
 
Join Date: Nov 2009
Does time machine ever turns off? I don't have file encryption on, and anytime I have my stupid external plugged in it's going NONSTOP
__________________
13" 1.7 i5, 4 GB RAM, 128 GB SSD MBA | 32GB iPad (1st Gen) | Airport Extreme
Nikon d3100 | 18-55 AF-S f/3.5-5.6G | 55-200 AF-S f/4-5.6 | 35 AF-S f/1.8G
My DeviantArt
misterneums is offline   0 Reply With Quote
Old Aug 11, 2011, 06:12 PM   #6
JayMysterio
macrumors 6502
 
Join Date: Apr 2010
Location: Rock Ridge
You can turn time machine off completely, so that it backups will only be done manually by you. Just open Time Machine preferences, and hit the switch to turn it off. Otherwise, it will constantly run.
__________________
Moto X  '10 & '12 Mac Mini  '11 13" MacBook Air 128GB  32GB iPad Mini Retina
JayMysterio is offline   0 Reply With Quote
Old Feb 21, 2012, 12:11 AM   #7
steaksauce
macrumors newbie
 
Join Date: Apr 2010
Quote:
Originally Posted by misterneums View Post
Does time machine ever turns off? I don't have file encryption on, and anytime I have my stupid external plugged in it's going NONSTOP
I'm having the same problem. When the external drive is plugged in it is constantly grinding away even though both the encryption process and backup are complete.
steaksauce is offline   0 Reply With Quote

Reply
MacRumors Forums > Apple Hardware > Notebooks > MacBook Air

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
thread Thread Starter Forum Replies Last Post
Time Machine Backup - Extremely Large Backup size!! EdRooney OS X 7 Feb 11, 2013 12:36 AM
First Time Machine Backup Taking Very Long blaklaybul OS X 7 Oct 11, 2012 07:47 PM
Time Machine backups to FTP site? domzanghi Mac Applications and Mac App Store 1 Dec 13, 2011 11:12 AM
Time Machine is taking so long to backup! petrucci666 Mac OS X 10.7 Lion 6 Sep 14, 2011 10:23 PM
Time Machine Backup taking a LONG time (not initial backup) mr.stinki OS X 2 Mar 21, 2008 11:30 PM


All times are GMT -5. The time now is 08:59 PM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2013, MacRumors.com, LLC