How do I backup a non-default Photos library?
I take a lot of photos with a large frame digital camera, so they don't automatically load into my photos on iCloud. I then import the photos from the camera SD card into a Photos library that is not my default library that automatically syncs to iCloud. The short question is, what is the best way to back this non-default library up. For a longer explanation read on. This is on purpose as a lot of the photos, especially nature photos of butterflies, birds and such don't turn out and end being deleted or modified (hard to keep a bug still). I then import the keepers that I might want to show and share with others into my default Photos library, which then will sync with iCloud. So the default library is automatically backed up in two places, iCloud and Time Machine. However, my other library, which right now has probably has 15K photos is only backed up to Time Machine. I have always heard you should have two back ups, and as I don't want to lose the other Photo library if something horrible should happen, I am looking for a way to back it up to another external disk. I don't want to just drag the alternate Photos library to the external disk each time as many of the files will never change again, but I know a Photos library is a complex container of many folders and files and the backup scheduler that I use for my offline files (Chronosync Express) breaks them all down and backs them up in a way that I don't know how to restore them as a Photos library container if I ever had to. So short question is, what is the best was to backup this extra Photo library?
iMac 24″, macOS 12.5
