@snoopy67: to semi-automatically backup to alternating volumes, you could e.g.
1. save the SD! settings for each backup volume separately,
2. create a script to start a SD! backup with (and to keep track of) alternating settings, and
3. use this script to start your regular backups to alternating volumes.
AppleScript is particularly handy for step 2 -- let me know if you'd like an example based on Dave's "Daily Backup" AppleScript application.
@Dave: hope you don't mind me intruding here ;-)
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