Proxmox DRBD9 雙機用肚子內的硬碟達到熱備援

有以下幾點要注意：

1. Proxmox 4：https://pve.proxmox.com/wiki/DRBD9
2. 如果沒花錢訂閱Promox，記得要修改Proxmox的程式庫：https://pve.proxmox.com/wiki/Package_repositories
• # PVE pve-no-subscription repository provided by proxmox.com, NOT recommended for production use
• deb http://download.proxmox.com/debian jessie pve-no-subscription
3. VM的硬碟要選raw

1. Create the first VM on DRBD for testing and live migration

   On the GUI you can see the DRBD storage and you can use it for as virtual disk storage.
   NOTE: DRBD supports only raw disk format at the moment.
   Try to live migrate the VM - as all data is available on both nodes it will take just a few seconds. The overall process might take a bit longer if the VM is under load and if there is a lot of RAM involved. But in any case, the downtime is minimal and you will see no interruption at all.
4.