Best way to copy 4.5TB?

Humate · 23 Mar 2013 at 12:54

Hi folks, I have an old 4.5TB raid6 array built from 12*500GB drives. I have bought 5*3TB drives for a new raid 6 array. I plan to copy all the data off my current 4.5TB array onto 2*3TB drives. Then I will transfer this data to a new 3*3TB raid5 array. Once that is done I will wipe the 2*3TB drives, and migrate the 3*3TB raid5 array to a 5*3TB raid6 array. This strategy requires two copy steps.

My question is... how do I copy all this data quickly and 100% reliably? What is the best tool for doing this that will run on windows7? I don't want to complete this process and find that some of my files are knackered.

Many thanks !

marc2003 · 23 Mar 2013 at 13:44

i'd use robocopy from the command line. run it with /? for a full list of options. it has various options to retry/skip problematic files etc.

with the /MIR switch, it simply mirrors the source to destination. if for some reason you have to stop it, running it again will simply skip over all the files that already exist and start again from where it left off.

edscdk · 23 Mar 2013 at 13:46

xcopy /s/e/v/d/c

then do it again to see if anything was missed

then right click and properties to see the numbner of files in the source / destination are the same

Humate · 23 Mar 2013 at 16:21

Thank you guys, i will check robocopy out.