How to Backup to Another Computer Using CrashPlan


Strengths Weaknesses


  • Unlimited backup
  • Good user management
  • Backs up external drives
  • Customizable versioning
  • Retains deleted files for 90 days

Cons: No mobile backupNo zero-knowledge encryptionNo multithreaded backupsNo courier recoverySupport limited to business hours

CrashPlan Migration Steps

The first step is to migrate all the data that is currently on your computer to Backblaze. Once you install Backblaze on your computer, it will automatically scan your system to locate the data to upload to Backblaze. The upload will continue automatically. You can speed up or slow down how quickly Backblaze will upload files by adjusting your performance settings for your Mac or for your Windows PC. In addition, any changes and new files are automatically uploaded as well. Backblaze keeps up to 30 days’ worth of file versions and always keeps the most recent version of every data file currently on your computer.

Question: Should you remove CrashPlan from your computer before migrating to Backblaze? Answer: No.

If your computer fails during the upload to Backblaze, you’ll still have a full backup with CrashPlan. During the upload period you may want to decrease the resources (CPU and network) used by CrashPlan and increase the resources available to Backblaze. You can “pause” CrashPlan for up to 24 hours, but that is a manual operation and may not be practical. In any case, you’ll also need to have CrashPlan around to recover those files in migration limbo.

Saving the Files in Migration Limbo

Let’s divide this process into two major parts: recovering the files and getting them stored somewhere else.

Recovering Files in Limbo

      1. Choose a recovery device: Right now you don’t know how many files you will need to recover, but once you know that information, you’ll need a device to hold them. We recommend that you use an external USB hard drive as your recovery device.
      2. Locate the limbo files: Open the CrashPlan app on your computer and select the “Restore” menu item on the left. As an example, you can navigate to a given folder and see the files in that folder as shown below:

      1. Click on the “Show deleted files” box as shown below to display all the files, including those that are deleted. As an example, the same files listed above are shown below, and the list now includes the deleted file IMG_6533.JPG.

      1. Deleted files can be visually identified via the different icon and the text shown grayed out. Navigate through your folder/directory structure and select the files you wish to recover. Yes, this can take a while. You only need to click on the deleted files as the other files are currently still on your computer and being backed up directly to Backblaze.
      2. Make sure you change the restore location. By default this is set to “Desktop.” Click on the word “Desktop” to toggle through your options. Click on the option, and you’ll be able to change your backup destination to any mounted device connected to your system. As an example, we’ve chosen to restore the deleted files to the USB external drive named “Backblaze.”
      3. Click “Restore” to restore the files you have selected.

Storing the Restored Limbo Files

Now that you have an external USB hard drive with the recovered limbo files, let’s get them saved to the cloud. With Backblaze you have two options. The first option is to make the limbo files part of your Backblaze backup. You can do this in two ways.

      1. Copy the limbo files to your computer and they will be automatically backed up to Backblaze with the rest of your files.


      1. Connect the external USB hard drive to your computer and configure Backblaze to back up that device. This device should remain connected to the computer while the backup occurs, and then once every couple of weeks to make sure that nothing has changed on the hard drive.

If neither of the above solutions works for you, the other option is to use the Backblaze B2 Cloud Storage service.


Should I adopt a machine?

Adoption should only be performed in certain circumstances. Please contact the Help Desk to discuss whether or not adoption is necessary in your situation. You can also read about this via the Crashplan Knowledge base

How do I restore files?

Open the CrashPlan application on your computer. Within the application, click on Restore. This screen will allow you to select the files you wish to restore. You can change the time period if you wish to restore a different version of a file.

NOTE: If you have just reimaged your hard drive, you will need to reinstall CrashPlan before restoring files.

How do I install CrashPlan?

Once the user is subscribed, they can install the software from Software Center or Self Service for macOS on their Drexel-owned computer. The Drexel IT Help Desk or Local IT Support can also assist with installation if required.


75 % – Good

Privacy and security go hand-in-hand, especially with online backups. Code42 collects more information than we would like, but even things like your phone number, operating systems and IP address aren’t abnormal for online backup solutions.

The privacy policy goes through a long list of people your data might be shared with, but many of these only apply if you consent or the recipient of the data can only use it for running a service. Overall, it’s fairly clean. It’s not the best we’ve seen, but there isn’t anything major to worry about.

 CrashPlan’s privacy policy doesn’t have any major

CrashPlan’s privacy policy doesn’t have any major issues.

CrashPlan is compliant with privacy legislation, such as the EU’s general data protection regulation (GDPR) and HIPAA in the U.S. This means there’s at least a minimum guaranteed level of privacy for your data.

Your files are encrypted while on the servers, so no one can look in without the key. You also don’t have to worry if you delete your account, as everything will be destroyed.

However, because of the lack of zero-knowledge encryption, if a criminal manages to get your data and key or a government subpoenas Code42 to hand over your data, there’s nothing the company can do. Everything you have on CrashPlan’s servers would be at risk, which is concerning if privacy is a priority. 

The threat of government subpoenas isn’t one you should ignore. There are countries with strong privacy laws, but Code42 is headquartered in the U.S., which doesn’t have great protections for cloud privacy. Because of laws such as the PATRIOT Act and programs like PRISM, the government could have a look at anything you store, especially if a court orders it.

Add a computer

Before you begin

Use unique email addresses and passwords Each person using CrashPlan for Small Business needs their own user account with a unique email address and password. Sharing a user account among multiple people is a large security and data privacy risk because any person using the shared account can download backed-up files from every device under that user account. 

Step 2: Install CrashPlan for Small Business and sign in

We recommend that each user install and sign in to the Code42 app using their own username and password.

  1. Run the Code42 app installer on the device where you want to install CrashPlan for Small Business.

    Windows: Double-click the MSI file. Mac: Mount the DMG and double-click the PKG file. Linux: Unpack the .tgz archive and run the included Bash script: sudo ./

  2. After the installation is complete, sign in to the Code42 app using your CrashPlan for Small Business username and password. If you don’t have a username and password, your CrashPlan for Small Business administrator can create them.

Step 3: Start backing up files

  1. (Users with other devices on the same user account only) The message Looks like this device is signing in for the first time appears. Click Add New Device and then click Yes on the confirmation dialog. The new device appears on the Home screen.
  2. Click Add destinations.
    • To back up to the Code42 cloud, select CrashPlan PRO Online.
    • To back up to a local destination: 
      1. Select Add Local Destination.
      2. Select the device or folder to which you want to back up, and click Open.  
  3. Click Save.
  4. Click Done. Backup starts automatically.

CrashPlan Replacement

Now that you are faced with replacing your CrashPlan for Home account, don’t wait until your contract is about to run out. Give yourself at least a couple of months to make sure all the data, including the limbo data, is safely migrated somewhere else.

Also, regardless of which option you chose for migrating your data from CrashPlan to a new cloud backup service, once everything is moved and you’ve checked to make sure you got everything, then and only then should you turn off your CrashPlan account and uninstall CrashPlan.

Changing Where Backup Data Is Stored

If you are adding storage that you would like to dedicate to your backup archives, you can tell CrashPlan to store the backup archive in a new location. This tutorial explains how to manage your location settings.

There are two different settings that control where to store your backup archives. You can specify:

  • A global default setting determines where backup data from new sources is stored (affects only new sources)
  • A computer-specific setting allows you to change the location of an existing backup archive for existing computers and for existing friends’ computers.

Change The Global Default Location

When backing up to another computer, or that computer backs up to you, the default location of the archive directory varies by operating system:

  • Windows Vista, 7, 8, Server 2008 and 2012: C:\ProgramData\CrashPlan\backupArchives (to view this hidden folder, open Windows Explorer and paste the path in the address bar).
  • Windows XP and Server 2003: C:\Program Files\CrashPlan\backupArchives
  • OS X: /Library/Application Support/CrashPlan/BackupArchives
  • Linux: /usr/local/var/crashplan/
  • Solaris: /opt/sfw/crashplan/backupArchives/

Changing the default backup location directs any new, incoming computers’ data to the specified location. Changing this setting does not affect the backup archive for any existing sources.


  • Click Settings\General.
  • Click Inbound backup from other computers\Configure.
  • Click the Default backup archive location folder icon.
  • Navigate to the directory where you want backups stored.
  • Click OK after you have selected the new directory.
  • Click OK to close Inbound Backup Settings.
  • Click Save.

Change Friend’s Default Location

On the Friends tab, you can change where your friends’ computers store backup data. Changing this setting affects backup data on new, incoming computers for the friend you specify and does not affect backup data for existing sources.


  • Click Friends.
  • Select the friend whose backup location you want to change (this part of the screen does not appear unless the “Allow this friend to back up to this computer” check box is checked).
  • Click the Default location icon.
  • Navigate to the folder.
  • Click OK.
  • Click Save.

Change Existing Locations

You can also change where any existing source computers store backup data. When you change this setting to redirect the backup location, CrashPlan moves the entire backup archive so that all the archived data is in one place.

You must do this for each computer for which you’d like to move the backup archive to another location.

  • Go to Backup\Inbound.
  • Click the source computer’s name.
  • Under Location, click the folder icon to open the directory window.
  • Navigate to the new location and click OK (CrashPlan begins moving the archive to the selected location and movement progress is displayed).
  • When the move has completed, verify that the archive has been removed from the previous location.

If you are moving an archive between drives, or you are using certain versions of Windows or Linux, the archive may be copied, instead of moved, to the new location. If the archive is still present at the old location after the move has completed, it is safe to delete the archive from the old location.

When installing do I choose “New Account” or an “Existing Account?”

If you have never used Crashplan at MIT, you will want to select “New Account.” If you’ve already used Crashplan, and you’re setting up additional devices or computers, you will choose “Existing Account.”

If you have have never used CrashPlan at MIT and yIf you have have never used CrashPlan at MIT and you choose “Existing Account”, you will get an error after you enter your username and password: “The information you entered is incorrect”. The solution is to select “New Account”

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