Re: how to migrate 40T data and 180M files

2009-08-12 Thread Ming Gao
I think rsync will compare the timestamp and size first, if they are the same, rsync will skip, is that right? If so, it would be faster I think. 2009/8/11 Michal Suchanek > 2009/8/11 Ming Gao : > > It's almost the same? I ever tested on about 7G data, I rsync'ed it to &g

Re: how to migrate 40T data and 180M files

2009-08-11 Thread Ming Gao
It's almost the same? I ever tested on about 7G data, I rsync'ed it to another directory, and it takes less than 1 minute when I run the same command line again. The reason why I use rsync is that the data will change during the time I run rsync the first time. Then I need to run rsync the second

how to migrate 40T data and 180M files

2009-08-11 Thread Ming Gao
hi, I need to migrate 40T data and 180M files from one storage device to another one, both source and destination will be NFS and mounted to a local suse linux box. The first question is that if there is any risk for such a big number of files? should I divide them into groups and rsync them in p