Go Back   MacRumors Forums > Apple Applications > Mac Applications and Mac App Store

Reply
 
Thread Tools Search this Thread Display Modes
Old May 12, 2010, 11:22 AM   #1
infobleep
macrumors regular
 
Join Date: Aug 2008
How long would a full backup of 900GB of data take using Time Machine?

Hi there

How long would it take to backup 900GB of data doing a full back-up using TimeMachine and my MacBook? My MacBook being a 2009 model with 2.13 GHz Intel Core 2 Duo and 4GB 800 MHz DDR2 SDRAM.

I have:
1 x MacBook 160GB drive
1 x Imoega minimax 500GB drive (firewire or USB 2 connection possible)
1 x Seagate 320GB drive (USB 2 only connection)

I have a 400 firewire port in my MacBook in addition to 2 USB sockets, as well as fireWire hub with power supply, should I wish to run 2 or more firewire devices at once, into the 400 firewire port.

My current backup drive is a Samsung USB2 1TB drive but for reasons that will hopefully become obvious below, I will need to purchase a new drive. I think a 1.5TB or 2TB would be fine and I guess a 400 firewire port is still better than USB2, even though it's only 400. However I'm not sure about the time issue.

I need to run regular full backups so that my incremental or differential backups do not get too vast. However I also don't wish to have my computer in-accessible for long periods of time because it has to run a full back up. I can run backups at night but on my old PC they could take 14 hours or more and then that was only 500GB of data being backed up. I had a look through the forums but couldn't find much on time taken for backing up. I will now explain my reasons for asking this. It is also a warning to anyone else who is currently doing something similar.

I recently had an MFT [master file table] and MFT mirror corrupt on my Iomega 500GB hard drive. However I think the boot sector is still working and I will run tests later on. The drive was formatted to NTFS, as until recently I was PC only.

I had been running a backup system which backed up to a 1TB Samsung USB2 hard drive. The system I used was based on creating incremental backups with the full back up quite sometime in the past. This way I saved on disc space and could run the backup system longer before I had to restart it again. I was using the windows based Cobian backup Black Moon to do the job because it was free and it worked well for recovering the occasionaly accidentally deleted or corrupt file.

However now I need to put back the whole system to the state it was before the failure and I have hit a problem. I have lots of incremental backups and none of which are linked together. So by restoring each incremental in date order, I may end up with files, which changed their name, also existing under their previous name or files I deleted being added. This will result in duplication.

A piece of software, Getdataback, can recover my files as I've run a demo of it and it showed the file system. I was also able to view the contents files, e.g. viewing photos. Whilst restoring will help for now, it isn't a good long term solution and I really need to create full backups much more regularly. Which is why I am wondering how long it would take.

Kings regards

Infobleep
infobleep is offline   0 Reply With Quote
Old May 12, 2010, 11:26 AM   #2
mobilehaathi
macrumors 601
 
mobilehaathi's Avatar
 
Join Date: Aug 2008
Location: The Anthropocene
Umm, I had a late 2008 Penryn MBP that took about 3-4 hours on an initial TM backup of about 200GB over FW800.
__________________
The true way is along a rope that is not spanned high in the air, but only just above the ground. It seems intended more to cause stumbling than to be walked along.
mobilehaathi is offline   0 Reply With Quote
Old May 12, 2010, 11:32 AM   #3
spinnerlys
Guest
 
Join Date: Sep 2008
Location: forlod bygningen
Lets assume 25MB/s is the constant read and write speed during the backup:

900GB = 900.000 MB (simplified)

900.000 MB / 25 MB/s = 36.000 s = 600 min / 10 h

So under ideal circumstances it should take 10 hours, but it may take 12 to 20 hours if there are many, many small files.
spinnerlys is offline   0 Reply With Quote
Old May 14, 2010, 06:20 AM   #4
infobleep
Thread Starter
macrumors regular
 
Join Date: Aug 2008
Thank you for your replies. Is there anyway to speed up the process with additional hardware or different devices?

Regards

Infobleep

Last edited by infobleep; May 14, 2010 at 06:44 AM.
infobleep is offline   0 Reply With Quote
Old May 14, 2010, 07:32 AM   #5
mobilehaathi
macrumors 601
 
mobilehaathi's Avatar
 
Join Date: Aug 2008
Location: The Anthropocene
You can attempt a mind meld, using yourself as a conduit for the data. It is a somewhat dangerous method of transfer, but you'll be able to transfer at speeds > 100GB/s.
__________________
The true way is along a rope that is not spanned high in the air, but only just above the ground. It seems intended more to cause stumbling than to be walked along.
mobilehaathi is offline   0 Reply With Quote
Old May 14, 2010, 08:09 AM   #6
bigdaddyp
macrumors regular
 
Join Date: Aug 2008
This is what I do but keep in mind your mileage may vary.

I use Timemachine to backup the os and include my documents and such.
I exclude the files from Transmission (bittorrent client) because that seems to cause problems.
I also exclude my media files because they are over 1 1/2 terrabytes in size. I use a seperate back up procedure for those.
That makes the backups much simpler and quote a bit faster and easier to restore.
__________________
Fat drunk and stupid may not be the best way to go through life but it is my preferred modus operendi.
bigdaddyp is offline   0 Reply With Quote
Old May 15, 2010, 08:18 AM   #7
infobleep
Thread Starter
macrumors regular
 
Join Date: Aug 2008
mobilehaathi, only 100gb/s? Not fast enough. Ha-ha

Seriously though I will just have to stick to hard drives and allow the time for backing up. I did wonder about tape drives but that's probably going to far for a home user and more expensive to run than hard drives.

I have a lot of AVI video on my hard drive for videos I am working on. Everytime I do a full backup these need to be backed up as well, which is why it takes so long. Even my photo collection isn't small and takes time.

Which is why I was just doing incremental backups for so long after the full backup.
infobleep is offline   0 Reply With Quote

Reply
MacRumors Forums > Apple Applications > Mac Applications and Mac App Store

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
thread Thread Starter Forum Replies Last Post
How long should a Time machine backup take? Justin098 Mac Applications and Mac App Store 3 Nov 26, 2013 10:42 AM
Is my Time Machine doing a full hard disk backup again? anonymous12 OS X 10.8 Mountain Lion 0 Oct 23, 2013 08:27 PM
How long should a first Time Machine Backup take? Hustler1337 OS X 10.8 Mountain Lion 1 Oct 23, 2013 01:05 PM
Want to keep a backup of your data? How about using Time Machine with a NAS! Doward Mac Peripherals 12 Jul 9, 2013 02:58 PM
want to access data on Time Machine backup from other macbook DigitalHerbal MacBook 4 Feb 4, 2013 09:58 PM

Forum Jump

All times are GMT -5. The time now is 12:06 AM.

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

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