It is an external hard disk drive that contains both the Acronis bootable media files and a backup of your system partition, entire computer, or any disk backup. An Acronis Survival Kit combines both components so that you could have a single device that has everything that you need to recover your computer in case of a failure.
Most often these components are separated, for example, the system backup is stored on an external drive or Acronis Cloud and the bootable media is a small USB flash drive. To recover your computer in case of a failure, you need to have two crucial components-a backup of your system disk and an Acronis bootable media.