installing on new hardware, raid 1 array with 4 disks

[Robert Andrews]

Fresh hardware with 4 new WD gold 10 TiB disks.
Partitioned disks into a 525Gig 4 way RAID 1 and and remainder holding swap and a 9TiB raid 6 array.

Attempted to install Ubuntu Server - on the 525Gig raid array. Grub install failed
Attempted to install Ubuntu Desktop on the 525Gig raid array. Grub install failed.
Attempted to install Ubuntu Desktop on a 250Gig SSD - System Install Completed.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubiquity 18.04.14.14
ProcVersionSignature: Ubuntu 5.3.0-28.30~18.04.1-generic 5.3.13
Uname: Linux 5.3.0-28-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.11
Architecture: amd64
CasperVersion: 1.394.3
Date: Thu Feb 27 18:04:22 2020
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
LiveMediaBuild: Ubuntu 18.04.4 LTS "Bionic Beaver" - Release amd64 (20200203.1)
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)