I was poking through my MBWE2 today and found something strange… It seems that the /dev/md2 array is the swap partition. Looking at the info on /dev/md2 it seems that the array is RAID-1 like the other partitions. Wouldn't it make sense to make /dev/md2 a raid0 partition, or even keep them out of a raid array and mount /dev/sda2 and /dev/sdb2 as separate swap partitions? It would double the normal 100 megabyte swap file size, and would be faster, wouldn't it? RAID1 slows down write access to the drives overall, doesn't it?
It makes sense for the system partitions to be fault tolerant, but why would we need a fault tolerant swap partition?
I'm considering removing that array and either rebuilding it RAID0 or mounting each swap partition separately. Does anyone have any thoughts on why I should not do this? I can't think of any reasons not to…
EDIT: Afterthought. I'm thinking keeping them separate (outside of a RAID array of any kind) would be a better way to go just in case either drive goes bad it won't drop all of the swap space.