If you have caps or throttles on your broadband data upload, Time Machine backups can easily push you over, too, for this reason. However, CrashPlan’s archive grew to 303.5GB. Over a week, that Mac’s Time Machine backup reached 63GB. (This also makes it difficult to copy a Time Machine backup from one volume to another without bloating the size.)Ĭode42 tested how quickly Time Machine archives grew with a 53GB volume on a Mac. If you back up files from that volume using file-based archiving software, hard links are copied each time they appear. It’s clever, but it only works within a single volume. These hard links can appear multiple times in a volume, but all refer to a single file. That omits making a fresh copy of any file that remains the same between those bakcups. The primary issue is that Time Machine uses a special kind of alias, called a hard link, to create complete snapshots for each point in time that a backup operation happens. And I have file-level restore possible.The issue with Time Machine and onlne backup Then those are individually encrypted files which Backblaze can backup. When I am done with them, I use rclone to sync and encrypt them to my main external (where I have tons of space). I keep my sparsebundles on a fast SSD which is not backed up with Backblaze. As such, the real answer is test it out before "trusting" anything.īTW, it is the requirement that you have the full point-in-time of the the bands that has led me to a different strategy for my files I have in a sparsebundle backed up by tools that do not give the full snapshot (e.g. It is also worth noting that a backup is not complete until you have tried to restore and verified it has worked. So if you need to restore them to a previous state (as opposed to the current), make sure you restore the entire thing. Thankfully, Backblaze gives a full point-in-time snapshot. However, it means that your bands must be correct for that point in time. This is really great for things like Backblaze since changes should, at most, only affect the changed bands. Sparse bundles are, as the name suggests, actually a lot of smaller files (bands) and not a single file. Are you saying your Mac that you are backing up is acting as the Time Machine server creating the sparsebundles?Įither way, It should work but you need to be really careful about restoration.
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