1. Should I worry about partition sizes between various brands? I've seen this: https://raid.wiki.kernel.org/index.php/Partition_types In the past, I did replace a WD Green with a WD RE4 (quiet Jonathan!), but the RE4 was just slightly bigger so it was no problem to clone the partition table.
On my first big RAID -- 160 GB disks off a 3Ware RAID controller -- one of them died. I RMA'd it with the vendor (Seagate?), and got back *THE SAME MODEL*. And it was one cylinder smaller than all the others.
That... was annoying. I believe I wound up cheating, and just outright buying a larger disk.
-Ken
