Linux RAID Benchmarks With EXT4 + XFS Across Four Samsung NVMe SSDs

Last week I offered a look at the Btrfs RAID performance on 4 x Samsung 970 EVO NVMe SSDs housed within the interesting MSI XPANDER-AERO. In this article are some EXT4 and XFS file-system benchmark results on the four-drive SSD RAID array by making use of the Linux MD RAID infrastructure compared to the previous Btrfs native-RAID benchmarks. Tests were done on the Linux 4.18 kernel to provide the latest stable look at the XFS/EXT4 MD RAID performance with these four powerful Samsung 970 EVO 250GB NVMe solid-state drives.