Two software RAID1's,
0: 2x 15K SAS drives, 73GB
1: 2x WD Caviar Green, 3TB
So the first RAID is a faster one, the second a slower data grave. What happens when I add both to a LVM logical volume so they form one large partition?
I don't expect lvm to intelligently move more often used data to the quicker hardware... right? Any suggestions for simple multi-tiered storage with these 4 drives?
Unanswered so far: Will the lv slow down, as in "the weakest link"? Or will it randomly slow down, with some blocks coming from fast, some from slow disks?