RAID programowy (mdadm)

RAID1 na serwerze dedykowanym.

📋 Wymagania

• Two same-size disks (e.g. /dev/sda, /dev/sdb)
• Full backup before changes
• Rescue/KVM access if something goes wrong

Install mdadm

Bash
sudo apt install -y mdadm

Create RAID1 (example)

⚠️ Destroys disk data. Adjust device names.

Bash
sudo mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sda /dev/sdb

Filesystem

Bash
sudo mkfs.ext4 /dev/md0

Persist config

Bash
sudo mdadm --detail --scan | sudo tee -a /etc/mdadm/mdadm.conf

Monitor

Bash
cat /proc/mdstat

Odporniejsze dane! 🚀