I just have a quick question about RAID 1 resyncs. When a RAID 1 array performs a resync is it actually copying all the data from one disk to another or is it just analyzing the data on the disks and correcting any differences?
The reason I ask is because I have a RAID 1 array on my laptop HDD with two external HDD's and whenever I take it anywhere I disconnect the externals. This causes a resync when I plug them back in and I don't want to be putting unnecessary stress on the drives if a resync does, in fact, copy all the data again. Thanks for any info!