Disc cloning takes a day
This issue maybe asked somewhere else, however I am using two identical model disk for the cloning process. The Disk are also the same size as well, one being used as a primary and another as backup. Both drives are SAS-2 as my computer uses SAS-2 interface along side with SATA interfaces. They are also 4TB in size at 7200RPM.
Is this normal for Acronis True Image 2017 to take a day to clone nearly 2TB of data?


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SAS drives are not speed demons as single drives. Most sport a high rotational speed of 10k to 15k but that only effects access time which has minmal effect on data transfer rates.
I believe an SAS2 drive has a maximum sustained transfer rate of 200MBs. That figure though is dependent on the siae of data file being transfered and the total amount of data. Small file sizes say 4k to 8k throughput is much lower than that of larger file size say 64k up.
I would say a day to handle 2TB of data between 2 such drives would be an expected result.
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Yeah, this makes sense, although SAS-2 are 6Gpbs so my calculation would be 750MBs. However at best I mostly get 150 to 200MBs throughputs. On accaision maybe 1 Gpbs especially for larger files. I think it's slow due to the rotaitional speed that I mentioned on the first post.
Thanks that's all I wanted to know.
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