Partition setup

gistfile1.txt

sda and sdb are 2 250GB SSDs
sdc and sdd are 2 4TB HDs

sda:
  sda1 20 mb FAT-32 (efi, bootable)
  sda2 249.8 gb
sdb:
  sdb1 20 mb FAT-32 (efi, bootable)
  sdb2 249.8 gb
  
sdc:
  sdc1 4 tb

sdd:
  sdd1 4 tb
  
RAID partitions (all RAID-1)
  mdm2: sda2 and sdb2
  mdm3: sdc1 and sdd1
  
LVM
  volume groups
    sdd-vg  sda2 and sdb2
    data-vg sdc1 and sdd1
    
  logical volumes (all on sdd-vg)
    usr-lv  20 gb
    var-lv  100 gb
    swap-lv 8 gb
    home-lv 100 gb (or whatever's left)
    
    data-lv 4 TB /storage
    
Mounts
  /dev/sda1  /boot/efi
  /def/sdb1  /boot/efi1
  root-lv    /
  usr-lv     /usr
  var-lv     /var
  swap-lv    swap space
  home-lv    /home
  storage-lv /storage
  
boot
  /dev/sda