CCC attempts to copy extended attributes when possible, but extended attribute data is generally considered to be disposable because it can be regenerated by the application that created it. For example, photo applications may place thumbnail icon data into an extended attribute. Extended attributes typically contain non-user-created data that was placed there by the application that created the file. Third-party applications shouldn't attempt to modify, nor copy that volume.Įxtended Attribute - Extra data that is associated with a file. That partition is created automatically when a disk is partitioned with the GUID partition scheme, and its contents are managed internally by OS X. Backing up to a disk image EĮFI Partition - The EFI partition is an Apple-proprietary partition. Disk images are recommended only when backing up to a network destination to protect attributes that are not supported by the network volume. When you open a disk image file, a virtual volume is mounted that allows you to browse the files held by the disk image – as if you were browsing a physical disk device. Rather, the files are copied to the destination among the already-up-to-date items such that the destination is a b ackupof the source.ĭisk image - Disk images are data containers that emulate disks. CCC uses a differential backup method, but does not store the differential data in a proprietary manner.
BOMBICH CARBON COPY CLONER FULL
When restoring, however, the destination is your original volume, or a replacement device.ĭifferential backup - A differential backup is a type of data backup that preserves data, saving only the difference in the data since the last full backup. When making an ordinary backup, the destination is your backup volume. a NAS or a share from another computer), or a disk image file. The destination can be a disk attached directly to your Mac, a network location (e.g. Dĭestination - The location where files from the source are copied. This term was coined to describe the large collections of technical equipment piled in the corridors of the Cruft lab at MIT in the 1980s and 90s. files that could (should) be deleted because they're no longer needed nor desired by the user. See: Working with APFS Volume GroupsĬruft - Another term for digital detritus, e.g. The two files will share storage on the disk for portions of the files that remain identical, but changes to either file will be written to different parts of the disk.Ĭontainer (APFS) - A container on an APFS formatted drive is similar to a partition, but allow several volumes to share the space in the container more flexibly. When cloning a file, the file system doesn’t create copies of the data, rather it creates a second reference to the file that can be modified independently of the first file. Clone is a common word used (historically) for a CCC backup, although it is not a term that we use any more due to the ambiguity introduced by the "cloning" feature that Apple introduced in the APFS filesystem.Ĭlone (APFS) - APFS cloning allows the user to instantly create copies of files on the same volume without consuming extra storage space. This is a reliable method of verifying that the files that have been copied to your destination volume actually match the contents of the files on the source volume.Ĭlone (CCC) - A copy of a folder or volume a non-proprietary backup. This option will increase your backup time, but it will expose any corrupted files within your backup set on the source and destination. CCC then uses these checksums to determine if a file should be copied. When you have done that, you have a backup of your data on physically disparate media.īootable backup - Same as backup, but a backup of a volume that contains an operating system that can be used to boot the computer if the primary startup volume fails.Ĭhecksumming or "Find and replace corrupted items" - With this option, CCC will calculate an MD5 checksum of every file on the source and every corresponding file on the destination. In other words, you back up your data using CCC. The verb form is back up, in two words, whereas the noun is backup. Bīackup - A backup, or the process of backing up, refers to the copying and archiving of computer data so it may be used to restore the original after a data loss event. AFP is deprecated in favor of the SMB protocol starting with OS X Yosemite. CCC can copy files to and from folders and sharepoints on SMB and AFP sharepoints. See also: Everything you need to know about C and APFSĪpple Filing Protocol (AFP) - AFP is a file sharing protocol that allows you to access the files on other computers and NAS devices on your network. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z AĪpple File System (APFS) - APFS is a new filesystem introduced by Apple in macOS High Sierra as a replacement for the legacy HFS+ filesystem.
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