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• research about synology recovery in christrees notebooklm link

While you can run Synology DSM on Proxmox using Xpenology, you should be extremely cautious: the standard installation process for Xpenology typically wipes all data on the connected drives.

If your primary goal is to recover the data from your broken DS411+II rather than just booting the OS, the sources provide a safer alternative using a Linux environment.

1. The Risk of Data Loss

When setting up Xpenology (using tools like Arc Loader) on a new system or VM, the installation wizard explicitly warns that all drives will be deleted and all data will be lost during the process. To proceed with the installation, you are often required to type the model name to confirm the deletion of your data. Therefore, simply “booting” your old disks into a new Xpenology VM on Proxmox is likely to result in the total loss of your existing files.

2. Recommended Recovery Path (Ubuntu Method)

Instead of booting the disks directly into Xpenology, you can use a PC (or a Proxmox VM with the disks passed through) to mount the drives and rescue your data:

• Requirements: You need a system with enough SATA ports to connect all your NAS hard drives at the same time. For a DS411+II, this means four ports.
• Boot Environment: Boot the computer using a Ubuntu Live USB (version 16.04 LTS or newer).
• Software Installation: Once inside Ubuntu, open the terminal and install the necessary tools to handle the RAID array:
  • Install mdadm: sudo apt-get install mdadm.
  • Install lvm2: sudo apt-get install lvm2.
• Mounting the Array: Use the command sudo mdadm -Asf && vgchange -ay to mount the drives. If successful, your volume will be active, and you can access your files via the Ubuntu file explorer to move them to a safe location.

3. Setting Up Xpenology on Proxmox

If you still wish to run a Synology-like OS on Proxmox after your data is safe, the general steps are:

• Create a VM: Select “do not use any media” for the OS and assign sufficient CPU cores and RAM (e.g., 4 cores and 8GB).
• Import Bootloader: Download the Arc Loader (IMG or OVA format) and import it into your Proxmox storage.
• Configure Boot Order: Set the bootloader disk as the primary boot option and enable the QEMU guest agent.
• Select Model: During the initial boot, you will choose a Synology model to emulate. While you can choose from a wide range (like the DS920+ or RS4021xs+), it is best to find one that matches your hardware capabilities.

Summary Recommendation: Do not attempt to boot your original disks directly with an Xpenology loader if you need the data. Recover your data first using the Ubuntu terminal method, then format the disks to start a fresh Xpenology installation on Proxmox.