The Mediasonic Probox has four disks installed, two Seagate 2T and two WD Blue 1T; fdisk -l sees them as: Disk /dev/sdc: 1.8 TiB, 2000398934016 bytes, 3907029168 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 Disklabel type: gpt Disk identifier: 87B50654-32EB-48EC-9659-AA9FCA8805BD
Device Start End Sectors Size Type /dev/sdc1 2048 3907029134 3907027087 1.8T Linux LVM Disk /dev/sdd: 1.8 TiB, 2000398934016 bytes, 3907029168 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 Disklabel type: gpt Disk identifier: 3D392BA1-0BA4-43A6-93C2-46B7B0725799 Device Start End Sectors Size Type /dev/sdd1 2048 3907029134 3907027087 1.8T Linux LVM Disk /dev/sde: 931.5 GiB, 1000204886016 bytes, 1953525168 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 Disklabel type: gpt Disk identifier: CBB788C9-2244-4FDF-AD06-487E2BAB42F4 Device Start End Sectors Size Type /dev/sde1 2048 1953525134 1953523087 931.5G Linux LVM Disk /dev/sdf: 931.5 GiB, 1000204886016 bytes, 1953525168 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 Disklabel type: gpt Disk identifier: 0D48188B-6B6E-49CC-A326-B2EB68FA4631 Device Start End Sectors Size Type /dev/sdf1 2048 1953525134 1953523087 931.5G Linux LVM I want to setup sde and sdf using raid1 for backups. I assume that since each is partitioned (sde1 and adf1) I can run mdadm and set up the raid1. None of these four disks is entered in /etc/fstab; I expect that I should use blkid and enter all four disks in /etc/fstab before doing anything else. Yes? Rich
