For over a year my backups using Macrium Reflect ran about an hour for a 370 GB backup. Then it started taking 4 hours. The write speed dropped from 1GB/Sec to 250 to 300 MB/Sec. It runs daily and I will see a week or more of 4 hour backups and then, randomly 3 or 4 days of 1 hour backups. Two days ago I borrowed a friends USB 3.0 drive and did a backup to it. It took an hour. I then did a backup to my drive and it also took just an hour. I tested twice a day for two days and both kept taking just one hour. Then, this morning both drives started taking 3 to four hours. I tried it three times and it consistently took (Macrium tells you how long it will take and also the bit rate) 3 to4 hours at bit rates of 200 to 300 MB/Sec.
Any ideas?
Any ideas?