Disk /dev/sda: 2,7 TiB, 3000592982016 bytes, 5860533168 sectors Disk model: ST33000651AS 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 Device Start End Sectors Size Type /dev/sda1 4096 1052671 1048576 512M Linux RAID /dev/sda2 1052672 5860533134 5859480463 2,7T Linux RAID /dev/sda3 2048 4095 2048 1M BIOS boot Partition table entries are not in disk order. Disk /dev/sdb: 3,7 TiB, 4000787030016 bytes, 7814037168 sectors Disk model: ST4000NM0245-1Z2 Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disklabel type: gpt Device Start End Sectors Size Type /dev/sdb1 4096 1052671 1048576 512M Linux RAID /dev/sdb2 1052672 5860533134 5859480463 2,7T Linux RAID /dev/sdb3 2048 4095 2048 1M BIOS boot Partition table entries are not in disk order.