Not long ago, many of us paid for software which tied our Macs up for hours every month or so, defragmenting their hard disks. Why, and why not now?
Most hard disks become increasingly likely to fail after 3 years. All Time Capsules are now in that zone, and should either be replaced or have their hard disks replaced.
By now, the current release of macOS has had all major bugs fixed or worked around. Isn’t this a good time to upgrade? Some practical advice on deciding and upgrading tips.