A caveat for backing up to a remote Macintosh that has no user logged in

Product: 
ccc5

For improved detachability, macOS will unmount any non-internal volumes that are attached to the system when you log out. So, for example, if you log out of your computer while a USB or Thunderbolt hard drive enclosure is attached, you can detach those hard drive enclosures from the system without having to manually unmount them first. This is a good thing — it would be annoying if you had to log back in to your system just to eject a drive. The downside of this, though, is that if you have a CCC backup task that runs when no user is logged in, the destination volume may be unavailable.

"My disk is already formatted APFS or HFS+, why am I getting this warning?"

Product: 
ccc5

If your disk is not partitioned using the scheme recommended and supported by Apple, CCC will indicate a warning when you start the backup task such as:

"You may have difficulty booting from this destination volume, the underlying disk is not partitioned with a partitioning scheme that Apple recommends for Intel Macs.", or when CCC attempts to convert the destination to APFS after installing macOS 10.15 Catalina, CCC may be unable to convert the volume from HFS+.

I have a full-volume backup in a folder or a disk image, but I don't have a bootable backup. How can I restore everything?

Product: 
ccc5

CCC makes bootable backups specifically to avoid this kind of situation. When you have a bootable backup, you simply boot from that, then restore everything to a replacement disk or the original disk. One step, minimal time, couldn't be easier. Occasionally people get into this sticky situation though -- I have a backup of everything in a disk image or in a folder on the backup volume, there's a clean installation of macOS on my replacement disk, now how do I get everything back to the way that it was before?

Restoring non-system files

What makes a volume bootable?

Product: 
ccc5

Bootability comes down to a few simple rules:

Backing up large files, mounted disk images, and Virtual Machine containers

Product: 
ccc5

Note: When backing up an APFS-formatted volume with CCC 5.1 or later, CCC will copy files from a read-only snapshot of the source volume. The subject of this article is not applicable in those cases.

Backing up databases on OS X Server

Product: 
ccc5

Databases are proprietary file types that often cannot be backed up in the conventional manner. In CCC, you can leverage a preflight shell script to perform an "out of band" backup of various databases using database-specific tools. The CCC backup task will subsequently back up the database archive files, from which you could restore the database at a later time.

The following pre-clone shell script will dump the contents of any MySQL databases. In the event that your standard backup of the database doesn't open, you can later restore it from the dump.

When I boot from my backup, Little Snitch reports that its rules have been replaced by a different version. Why, and how can I avoid this?

Product: 
ccc4

According to ObDev developers, it is crucial for Little Snitch to avoid unnoticed ruleset changes. Little Snitch therefore has numerous mechanisms to detect whether it is using the exact same ruleset file, as in, on the same volume and at the same physical address on that disk. This sort of mechanism makes it impossible for Little Snitch to use the ruleset on the booted backup volume without physical intervention from a user at the system (thus the dialog asking if it's OK to use the current version of rules or to use a default ruleset).

Configurare le condizioni di esecuzione per le operazioni programmate

Product: 
ccc4

A volte la programmazione su base oraria non è sufficiente per descrivere esattamente come si desidera eseguire l'operazione. CCC offre condizioni di esecuzione che consentono di limitare l'esecuzione delle operazioni in determinate condizioni, quando l'operazione è programmata per essere eseguita.

Outgoing network connections made by CCC

Product: 
ccc4

If you're using an application firewall such as Little Snitch, you will see several outgoing network connections coming from CCC. We explain below what connections you should expect to see, and also explain why some connections that look unexpected are simply misreported by Little Snitch.

Ordinary activity

CCC will make external network connections for the following activity: