Mac mini Server (Late 2012 and Mid 2011): How to install OS X Server on a software RAID volume
Follow these steps to create a software RAID volume (stripe or mirror) using the two drives in your Mac mini Server (Late 2012 or Mid 2011) and install OS X Server on it.
- These steps will erase all data on both drives in your Mac mini Server. You will be able to reinstall OS X Server, but make sure that any other data on these drives has been backed up before proceeding.
- You cannot create a recovery partition on a RAID volume. Because certain features of OS X are not supported without a recovery partition, you should consider using the Recovery Disk Assistant to create an external recovery disk before creating your RAID volume.
- The steps in this article require a broadband internet connection via WiFi or ethernet. Your network connection must meet the requirements for Internet Recovery described in the "Requirements for reinstalling OS X" section of this article.
- Start up your Mac mini Server while pressing and holding the Command, Option, and R keys to start up in Internet Recovery mode. This may take several minutes. Release the keys when you see the spinning globe and the message "Starting recovery process from network."
- Choose your preferred language.
- Choose Disk Utility in the OS X Utilities window and click Continue.
- In Disk Utility, select one of your hard drives and click the RAID tab.
- Enter a name for your RAID set and choose the desired RAID type (Striped or Mirrored).
- Drag each of your two hard drive icons from the left side of the Disk Utility window into the list in the middle of the window. Important: Drag the disk icons (which are indicated by a size like 1 TB) and not the partition icons (which are indicated by a name like Server HD).
- Click Create.
- When your RAID set is shown as Online, quit Disk Utility.
- Choose Reinstall OS X in the OS X Utilities window and click Continue.
- Proceed through the installer and select your new RAID volume for installation. As noted above, a message should appear and state that some features of OS X are not supported for this disk because a Recovery Partition cannot be created on a RAID volume. Click Continue.
- Allow the installation to complete. This may take a few hours, depending on your internet connection.
Additional steps for Mountain Lion
If your Mac mini Server came with OS X Mountain Lion, you will need to perform the following steps to install OS X Server after the Mountain Lion installation is complete.
- Complete the OS X Mountain Lion Setup Assistant.
- Launch the Mac App Store.
- Select the Purchases tab.
- Click the Accept button.
- Enter your Apple ID and password.
- When download is complete, launch the Server app and complete your server setup.