Disk /dev/sdb: 465.76 GiB, 500107862016 bytes, 976773168 sectors Disk model: WDC WDS500G2B0A Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: gpt Disk identifier: -- Device Start End Sectors Size Type /dev/sdb1 2048 1050623 1048576 512M EFI System /dev/sdb2 1050624 974772223 973721600 464.3G Linux RAID /dev/sdb3 974772224 976771071 1998848 976M Linux swap Disk /dev/sda: 465.76 GiB, 500107862016 bytes, 976773168 sectors Disk model: WDC WDS500G2B0A- Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: gpt Disk identifier: -- Device Start End Sectors Size Type /dev/sda1 2048 1050623 1048576 512M EFI System /dev/sda2 1050624 974772223 973721600 464.3G Linux RAID /dev/sda3 974772224 976771071 1998848 976M Linux swap Disk /dev/md0: 464.18 GiB, 498410192896 bytes, 973457408 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes