Time Machine iconFinding a reliable backup solution for the Mac that runs in the background and isn't a drain on system resources was once considered a challenging prospect.

With the arrival of OS X 10.5 Leopard, Apple changed that preconception by introducing its native backup solution, called Time Machine. This article explains the benefits of using Time Machine and runs you through the setup and restore process.

Benefits of Using Time Machine

Time Machine has won over many Mac users due to its automated scheduling and intuitive recovery process, along with its ability to run in the background without affecting overall system performance.

The application achieves this by making an initial full backup of your Mac's system disk and then stacking subsequent changes to the volume in a chronological hierarchy. Hourly backups, daily backups and weekly backups occur automatically, while the oldest backups are overwritten with new ones as the external backup disk reaches full capacity.

This creates a layered snapshot system that's reflected in Time Machine's navigable timeline and makes the recovery of individual files and folders a simple affair.

Time Machine on a MacBook Air
Another big plus with Apple's solution is that a Time Machine backup can be used in Recovery Mode to restore your Mac to its original state if the worst happens and your drive fails.

Likewise, the same backup volume can be used by Apple's Migration Assistant during an OS X installation to quickly transfer your applications, files and settings from an old Mac to a new one.

If you're using a Mac notebook running OS X Lion or later and you move away from the backup disk, Time Machine will save daily backups to your Mac's startup disk and even manage these local snapshots to ensure you still have storage space available.

Time Capsule

What You Need

Apple's AirPort Time Capsule (from $299) is a Wi-Fi base station with a built-in backup disk, making it an ideal wireless solution for Time Machine since it avoids the need to keep an external hard drive physically connected to your Mac.

You can also use an external drive connected over a network, so long as it supports Apple File Protocol (AFP) file sharing. Otherwise, any hard drive that connects via USB, Thunderbolt or FireWire and uses a Mac filesystem format will do the job.

Bear in mind that the initial backup takes time, so you may want to set up Time Machine in the evening and leave your Mac on overnight for the process to complete.

Setting up Time Machine

When you connect an external hard drive to your Mac, a prompt may appear asking if you want to use it as a Time Machine backup disk. If you'd prefer to secure your backups with a password, check the "Encrypt Backup Disk" option, then click "Use as Backup Disk".

Time Machine query dialog

If the dialog prompt doesn't appear, follow these steps:

  1. Open Time Machine's settings by selecting System Preferences from the top-left Apple menu in the menu bar and clicking the Time Machine icon in the preference pane.
  2. Turn on the Time Machine slider and tick the "Show Time Machine in menu bar" option if it isn't already selected.
  3. To exclude specific items from your backups, click "Options…" and use the + button to select the files or folders in question. Here you can also choose whether to back up when your Mac's running on battery power and whether or not to be notified when old backups get deleted. Click Save when you're done.
  4. Click "Select Backup Disk…" and choose the drive you'd like to use from the list. Finally, tick the box if you want to Encrypt backups and then click "Use Disk".

Time Machine preference pane

And that's it. The chosen volume will be formatted and the initial backup begins a couple of minutes later. Time Machine looks after the rest.

Using Multiple Backup Disks

Of course, using one backup disk may prove impractical if you often move your Mac between two locations. Fortunately, Time Machine supports multiple backups and will automatically rotate backups between disks, so there's nothing to stop you from keeping one in both places.

To add another backup disk to Time Machine, simply wait for the initial backup to complete on the first disk and then repeat step 4. Time Machine will ask if you want to use this new volume instead or to take turns backing up between the two disks. Select "Use Both".

Time Machine Use Both Disks

Restoring From a Backup

To restore individual files and folders from your desktop, follow these steps:

  1. Enter Time Machine by selecting the option from the Time Machine icon on the OS X menu bar.

  2. In the screen that appears you'll see a Finder window and several more receding into the distance; select a date from the timeline right of the screen or click the up/down arrows to navigate the backup snapshots and locate the deleted item (or an earlier version of an item) you want to recover.

  3. Select the relevant item in the snapshot window, click Restore, and Time Machine will copy the file or folder to its original location on your Mac's startup disk.

Time Machine screen
If you're using multiple backup disks and want to restore an item from another backup volume, return to the desktop, hold down the Option key and click on the Time Machine icon in the menu bar. Select the option that appears to "Browse Other Backup Disks…" and choose the attached volume in question.

Finally, to restore your startup disk wholesale in the event of a disaster, restart your Mac and hold down the Command and R keys to enter Recovery Mode. Select the option to "Restore your Mac from a Time Machine backup" from the OS X Utilities window and follow the steps on screen.

Alternatives to Time Machine

If you'd prefer more scheduling flexibility than Time Machine offers or you want to back up to a bootable clone disk, check out third-party apps like SuperDuper! ($27.95) and Carbon Copy Cloner ($39.99).

Alternatively, CrashPlan offers a free off-site backup solution as well as a cloud-based option for as little as $5 a month.

Top Rated Comments

JimmyHook Avatar
107 months ago
Great article. Ignore the condescending comments. Some people are new and learning... "just search for it" is a terrible attitude
Score: 9 Votes (Like | Disagree)
Crosscreek Avatar
107 months ago
SuperDuper runs every night on my Mac so I always have a fresh bootable copy from external WD drive.
Score: 4 Votes (Like | Disagree)
JeffyTheQuik Avatar
107 months ago
This is nice for those new to Macs, or those that have forgotten to do so. This kind of thing would have been nice to have when I entered the Mac waters back in 2008.

Thank you!
Score: 4 Votes (Like | Disagree)
Weaselboy Avatar
107 months ago
If you're using a Mac notebook running OS X Yosemite or later and you move away from the backup disk, Time Machine will save daily backups to your Mac's startup disk and even manage these local snapshots to ensure you still have storage space available.
Just a correction Tim, local snapshots came out with Lion. http://pondini.org/TM/30.html

Well written article. Thank you.
Score: 4 Votes (Like | Disagree)
glenthompson Avatar
107 months ago
This doesn't offer any way of backing up the hard drive to itself, does it?

I mean... surely that would be more useful than nothing, wouldn't it?
Pretty much this is a useless approach. The only thing it would protect you against is accidental deletion or overwriting of a file. Almost any other disaster scenario would leave you without a backup. Think fire, theft, flood, etc.

Best practice for backups is to have at least 3 copies of your data with one of those copies being off-site.
Score: 2 Votes (Like | Disagree)
r03dz Avatar
107 months ago
My Time Capsule has saved me multiple times. A great purchase.
Score: 1 Votes (Like | Disagree)

Popular Stories

Delta Feature

Delta Game Emulator Now Available From App Store on iPhone

Wednesday April 17, 2024 9:58 am PDT by
Game emulator apps have come and gone since Apple announced App Store support for them on April 5, but now popular game emulator Delta from developer Riley Testut is available for download. Testut is known as the developer behind GBA4iOS, an open-source emulator that was available for a brief time more than a decade ago. GBA4iOS led to Delta, an emulator that has been available outside of...
iPhone 15 Pro Action Button Translate

All iPhone 16 Models to Feature Action Button, But Usefulness Debated

Tuesday April 16, 2024 6:54 am PDT by
Last September, Apple's iPhone 15 Pro models debuted with a new customizable Action button, offering faster access to a handful of functions, as well as the ability to assign Shortcuts. Apple is poised to include the feature on all upcoming iPhone 16 models, so we asked iPhone 15 Pro users what their experience has been with the additional button so far. The Action button replaces the switch ...
maxresdefault

Hands-On With the New App Store Delta Game Emulator

Wednesday April 17, 2024 12:19 pm PDT by
A decade ago, developer Riley Testut released the GBA4iOS emulator for iOS, and since it was against the rules at the time, Apple put a stop to downloads. Emulators have been a violation of the App Store rules for years, but that changed on April 5 when Apple suddenly reversed course and said that it was allowing retro game emulators on the App Store. Subscribe to the MacRumors YouTube channel ...
iOS NES Emulator Bimmy Feature

NES Emulator for iPhone and iPad Now Available on App Store [Removed]

Tuesday April 16, 2024 11:33 am PDT by
The first approved Nintendo Entertainment System (NES) emulator for the iPhone and iPad was made available on the App Store today following Apple's rule change. The emulator is called Bimmy, and it was developed by Tom Salvo. On the App Store, Bimmy is described as a tool for testing and playing public domain/"homebrew" games created for the NES, but the app allows you to load ROMs for any...
Provenance Emulator

PlayStation, GameCube, Wii, and SEGA Emulator for iPhone and Apple TV Coming to App Store

Friday April 19, 2024 8:29 am PDT by
The lead developer of the multi-emulator app Provenance has told iMore that his team is working towards releasing the app on the App Store, but he did not provide a timeframe. Provenance is a frontend for many existing emulators, and it would allow iPhone and Apple TV users to emulate games released for a wide variety of classic game consoles, including the original PlayStation, GameCube, Wii,...