It's neither a bug or a limitation as other cloning product don't use defrag and realign, they simply shrink to the last cluster in use by the file system, which means that the file system is limited by the amount it can be shrunk, or can't be shrunk at all. I'm really just wondering if this is a thing Macrium are looking at and whether it's worth waiting for a fix in a future update? I have the results in a speadsheet if you want it. The tests were all using the same hardware with only the cloning software being different. I did a lot of benchmarking tests a while back in various scenarios using Macrium and several other imaging/cloning applications.Īll fairly similar for most tests but Macrium was a lot slower than all the others when it came to cloning or restoring to smaller volumes than the source. I've had a support case open with Macrium about his for months now, with no progress. It's definitely a Macrium software issue as I have verified elesewhere that all my adapters work at their full speeds.Īlso I have trialled other cloning software on the same hardware and got the much faster speeds I would expect. I suspect there is a inherant inefficiency in the way Macrium is doing clones.īackups are fast, but restores and clones are slow.

Yet I always get these really slow rates. I'd expect to get around 80-100MB/s.Īll my adapters and the SSD are high performance so should not be bottlenecks. Surely the clone should run as fast as the slowest device in the system, which should be the hard drive. Often around 20MB/s which means I'm waiting for hours on customer's premises for clones that should take only a quarter of that time. Whichever way I do it I am seeing VERY slow transfer rates. Sometimes I install the new SSD into the customer's computer and connect the old hard drive via USB3/SATA3 adapter and boot from the Macrium boot USB drive to run the clone.

Sometimes I connect both the source and destination drives to my own laptop via USB3/SATA3 adapters and do the clone using the Macrium Reflect v8 installed on my laptop. I do the clone for my customers in various ways:. I run an IT support business so I regularly do disk cloning, these days usually from HDD to SSD.

Clone disk macrium reflect free