Not shown is a massive collection of CDs going back forty years (which I keep in an otherwise-unused huge drawer at work). In other words, most of it consisted of digital media files from the DVDs and Blu-Rays I collected over the past twenty years. What was taking up so much space, with such large files? 3TB is a lot of storage for a personal computer. As I used up more space on the main Macintosh HD drive, there was less space on the Time Machine backup to work with.Īt this point, you may ask: The main drive was 3TB, as was the Time Machine backup. But if the size of a file it wants to copy is greater than the amount of free space remaining on Time Machine, the backup process can get into trouble. I didn’t think much about it, because of the way Time Machine works: It duplicates the contents of the main drive, and saves any replaced files for as long as it can. Occasionally over the past few years I’d get a warning from Time Machine that the Data drive in the Time Capsule needed to be erased. Three layers of backup coupled with fast SSDHD (solid-state drive/hard drive). Backblaze – a second cloud service remote backup of Macintosh HD.Dropbox – a cloud service remote backup for my /Users/seligman/Dropbox folder.Data – a 3TB hard drive inside an Apple Airport Express my Time Machine backup.Macintosh HD – a 3TB Fusion Drive (combined solid-state drive (SSD) and hard drive) the main hard drive of my iMac.Let’s start with my backup arrangement that I used for the past year, ever since I had a major file loss. Whenever someone tells me, either personally or professionally, that they’re getting a new computer, my first words are “What about backup?” I liked to think that I took my own advice and that I was well-protected against hard drive failure.
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