I use Acronis True Image backup software on a new mid-2015 MacBook Pro Retina with a 2.8GHz processor and a 1TB SSD running High Sierra and APFS. Incremental backups, even when there's almost no files that are changed on my system, take about 30 minutes to scan ~300GB. Almost all of this is scanning time to look for changes. Activity Monitor's Energy tab reports Energy Impact of about 150.
Is this normal? Seems like a long time and a lot of battery expenditure (if I enabled backups while not plugged in) for a disk scan.
Also, are there other less battery-intensive backup software for Macs? Or should I realistically expect any backup system to be a time and resource hog because a full disk scan is inherently energy-intensive and time-consuming?
Finally, is there anything I can do (other than removing files from my disk or excluding them from backups!) to improve backup times and/or energy cost?