![]() It has a “thinning” process which keeps hourly backups for 24 hours, daily backups for 30 days, etc. Here is a sample run with I/O throttling DISABLED:Ģ 08:00:05 EDT Storage location: AWS (S3:/akiauenjtrxfwvdeqwuf-arq)Ģ 08:00:05 EDT Backup plan: Back up to AWS (D2758EBB-E649-4832-AE6D-XXX)Ģ 08:00:05 EDT Preventing computer sleep while backing upĢ 08:00:31 EDT Creating APFS snapshot for Macintosh HD - Data (/System/Volumes/Data)Ģ 08:00:31 EDT Created APFS snapshot for Macintosh HD - Data (/System/Volumes/Data)Ģ 10:18:43 EDT /Users: Created a new backup record.Ģ 10:18:43 EDT /Users: 482.871 GB, 1,067,779 files backed upĢ 10:46:46 EDT /Volumes/Photos Image 2: Created a new backup record.Ģ 10:46:46 EDT /Volumes/Photos Image 2: 1,391.454 GB, 369,503 files backed upĢ 10:46:46 EDT Total scanned: 1,874.325 GB, 1,437,298 filesĢ 10:46:46 EDT Total uploaded (compressed): 2.371 GB, 2054 filesĢ 10:46:46 EDT Thinning backup records according to backup plan settings.Ģ 10:46:47 EDT Thinning backup records: Deleting backup record 09:21:10 +0000Ģ 10:46:48 EDT Thinning backup records: Deleting backup record 06:08:51 +0000Ģ 10:46:48 EDT Removing unreferenced dataĢ 10:47:39 EDT Total stored size before cleanup: 2,029.852 GBĢ 18:08:55 EDT Total stored size after cleanup: 2,027.527 GBĢ 18:08:55 EDT Removing APFS snapshot for /System/Volumes/DataĢ 18:08:55 EDT Removed APFS snapshot for /System/Volumes/Data And in spite of the options to Throttle Disk I/O and other resources, I almost always have to pause it to keep my iMac from being unusably slow. ![]() Depending on when the runs take place, the iMac can effectively be backing up ALL THE TIME. ![]() A typical incremental run can take 10 hours, thought it varies widely. But it seems to have a performance / optimization problem. ![]() I’ve been using Arq for a number of years since CrashPlan’s demise. ![]()
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