New To Mac-Forums?

Welcome to our community! Join the discussion today by registering your FREE account. If you have any problems with the registration process, please contact us!

Get your questions answered by community gurus Advice and insight from world-class Apple enthusiasts Exclusive access to members-only contests, giveaways and deals

Join today!

 
Start a Discussion
 

Mac-Forums Brief

Subscribe to Mac-Forums Brief to receive special offers from Mac-Forums partners and sponsors

Join the conversation RSS
OS X - Operating System General OS operation information and support

OS 10.5 - Time Machine back up all hard drives?


Post Reply New Thread Subscribe

 
Thread Tools
Dizzi45Z

 
Member Since: May 28, 2008
Posts: 25
Dizzi45Z is on a distinguished road

Dizzi45Z is offline
I am running a mac pro with all 4 Hard Drive bays in use. I have my system drive, and then two other hard drives that store project information for recording. My 4th drive is my back up drive. Does Time machine back up all 3 of my drives? I know that it is designed to recover my system drive. But let's say that one of my project drives dies, what would the process be like to restore information back onto a new replacement project drive?
QUOTE Thanks
EL@PDX

 
Member Since: Jun 02, 2008
Location: Portland
Posts: 10
EL@PDX is on a distinguished road
Mac Specs: 15.4 MacBook Pro 2.2 Ghz; 200 GB Toshiba 7k200; 2 GB stock RAM; Leopard 10.5.3

EL@PDX is offline
If your other drives are HFS+ Journaled formatted then time machine will back them up. You should check time machine's settings, in it you can select drives to exclude. On mine it automatically had a FAT32 and NTFS partition excluded. Ensure your other drives that you want time machine to back up are not on the exclude list. If there is a HFS formatted drive you do want time machine to exclude, go into time machine preferences and add the drive to the excluded list.
QUOTE Thanks
EL@PDX

 
Member Since: Jun 02, 2008
Location: Portland
Posts: 10
EL@PDX is on a distinguished road
Mac Specs: 15.4 MacBook Pro 2.2 Ghz; 200 GB Toshiba 7k200; 2 GB stock RAM; Leopard 10.5.3

EL@PDX is offline
Time machine backs up each drive into a separate folder. When you need to restore a specific drive it will go to that folder and restore that data in that folder. I don't have any details from experience.
QUOTE Thanks
Dizzi45Z

 
Member Since: May 28, 2008
Posts: 25
Dizzi45Z is on a distinguished road

Dizzi45Z is offline
Thanks for the replies. I just went into my Time Machine Drive and I noticed that each of the Backup folders have my drives listed that are being backed up.

It appears that it backups the whole drives almost every hour. For example, I can go into a backup of an hour ago or any backups from yesterday and has the entire drive backed up each time.??? That is confusing to me, because my drive has over 132 GB of info on it. So it would seem that it would fill up my Time Machine Drive within 5-6 hours. Yet, I have 18 backups that each have my whole drive copied on it.

Does Time machine somehow work with the drive so that it really doesn't copy the whole drive every hour, yet somehow Aliases the information into each backup? Does that make sense?

I guess I am now concerned about CPU resources if it is backing up 140 + GB every hour. But it doesn't really feel like it is ever doing that.
QUOTE Thanks
Big Dan

 
Big Dan's Avatar
 
Member Since: Feb 01, 2009
Location: New York
Posts: 95
Big Dan is on a distinguished road
Mac Specs: Mini 1.83Ghz Dual Core, 2 GB RAM, running 10.6.1

Big Dan is offline
The backup is incremental meaning after the initial backup it only backs up added and changed files. If you have changed or added a file it will back up the new copy of the file and keep the old version of the file should you need to restore it. You can see the old version by scrolling back though time. If you add a new file it just copies it into the back up.
QUOTE Thanks
Dizzi45Z

 
Member Since: May 28, 2008
Posts: 25
Dizzi45Z is on a distinguished road

Dizzi45Z is offline
Quote:
Originally Posted by Big Dan View Post
The backup is incremental meaning after the initial backup it only backs up added and changed files. If you have changed or added a file it will back up the new copy of the file and keep the old version of the file should you need to restore it. You can see the old version by scrolling back though time. If you add a new file it just copies it into the back up.
Thanks Dan!

Do you know how OSX does it incrementally, yet still shows the whole drive in each dated backup folder? Do each of these folders somehow reference the same material, even though they are in different folders? It appears as if each folder is backing up the whole drive all over again.
QUOTE Thanks
Big Dan

 
Big Dan's Avatar
 
Member Since: Feb 01, 2009
Location: New York
Posts: 95
Big Dan is on a distinguished road
Mac Specs: Mini 1.83Ghz Dual Core, 2 GB RAM, running 10.6.1

Big Dan is offline
Quote:
Originally Posted by Dizzi45Z View Post
Thanks Dan!

Do you know how OSX does it incrementally, yet still shows the whole drive in each dated backup folder? Do each of these folders somehow reference the same material, even though they are in different folders? It appears as if each folder is backing up the whole drive all over again.
Yes they reference the same material, I've guessing via hard links. The way Time Machine works is seems very similar to the way an age old Linux tool called 'rsync' works.

The system is pretty simple and ingenious at the time same. If a file still exists but hasn't changed since the last back it hard links the file to it's original backup instead of making a duplicate copy and wasting space.

The Wikipedia entry explains it well, probably better than me. Time Machine (Apple software) - Wikipedia, the free encyclopedia check out the how it works section.
QUOTE Thanks
Dizzi45Z

 
Member Since: May 28, 2008
Posts: 25
Dizzi45Z is on a distinguished road

Dizzi45Z is offline
Quote:
Originally Posted by Big Dan View Post
Yes they reference the same material, I've guessing via hard links. The way Time Machine works is seems very similar to the way an age old Linux tool called 'rsync' works.

The system is pretty simple and ingenious at the time same. If a file still exists but hasn't changed since the last back it hard links the file to it's original backup instead of making a duplicate copy and wasting space.

The Wikipedia entry explains it well, probably better than me. Time Machine (Apple software) - Wikipedia, the free encyclopedia check out the how it works section.
Thank you. This is good stuff.
QUOTE Thanks

Post Reply New Thread Subscribe


« Leopard security hole? | Leopard Install Problem »
Thread Tools

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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
Trackbacks are On
Pingbacks are On
Refbacks are Off
Forum Jump

Similar Threads
Thread
Thread Starter
Forum
Replies
Last Post
Time Machine: How far back? theLane OS X - Operating System 1 03-28-2009 11:57 AM
What's with Time Machine? Noels OS X - Apps and Games 15 01-23-2009 01:52 AM
Back Up: Time Machine vs. User folder on separate hard drive? MiddleFingerMan Switcher Hangout 11 10-17-2008 09:25 AM
Time Machine - Back up anoter ext drive? phinds OS X - Operating System 3 12-03-2007 06:04 AM
Question-Time Machine with AFP drives-moving drives? markw10 OS X - Operating System 0 10-28-2007 03:13 AM

All times are GMT -4. The time now is 03:10 AM.

Powered by vBulletin
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
X

Welcome to Mac-Forums.com

Create your username to jump into the discussion!

New members like you have made this community the ultimate source for your Mac since 2003!


(4 digit year)

Already a member?