Thanks for this explanation

Those files are from save of my WHS so I will wait 3 days and when copy will end I will try to archive some.

Thank you for your fast reply

Thanks,

this work fine

But is it normal that greyhole write only 3 files per second?

the files are very small and all my HDDs are in S-ATA.

Hello, First please excuse for my bad english, I'm french. I've begin to move my datas from a 2Tb NTFS disk to my greyhole storage pool and converted greyhole to MySQL. When it copy files it's very slow, 3 operations/s and give me that error for each file Dec 16 08:46:44 3 write: Can't find how much...