I’m installing new 4TB disks on an older Dell server, it’s a PowerEdge T110 with a G6950 CPU so it’s not really old, but it’s a couple of generations behind the latest Dell servers.
I tried to enable UEFI booting, but when I turned that option on the system locked up during the BIOS process (wouldn’t boot from the CD or take keyboard input). So I had to make it boot with a BIOS compatible MBR and a GPT partition table.
Number Start (sector) End (sector) Size Code Name
1 2048 4095 1024.0 KiB EF02 BIOS boot partition
2 4096 25169919 12.0 GiB FD00 Linux RAID
3 25169920 7814037134 3.6 TiB 8300 Linux filesystem
After spending way to much time reading various web pages I discovered that the above partition table works. The 1MB partition is for GRUB code and needs to be enabled by a parted command such as the following:
parted /dev/sda set 1 bios_grub on
/dev/sda2 is a RAID-1 array used for the root filesystem. If I was installing a non-RAID system I’d use the same partition table but with a type of 8300 instead of FD00. I have a RAID-1 array over sda2 and sdb2 for the root filesystem and sda3, sdb3, sdc3, sdd3, and sde3 are used for a RAID-Z array. I’m reserving space for the root filesystem on all 5 disks because it seems like a good idea to use the same partition table and the 12G per disk that is unused on sdc, sdd, and sde isn’t worth worrying about when dealing with 4TB disks.