DSM7 on HP Proliant DL120 G7 server 1U

 To save your time, please give up to install Xpenology for the HP server directly.
The blog is the solution to install DSM7 Xpenology on top of the Proxmox VM.
Hardware:
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Boot from SD card or USB thumb drive for Proxmox is not recommend!
The best option is boot from the one of the x2SATA connectors.

Software: 
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#1. Proxmox

https://www.wundertech.net/how-to-install-xpenology-on-proxmox-dsm-7/

#2. GitHub - wjz304/rr: Redpill Recovery (arpl-i18n)

( https://wp.gxnas.com/12245.html )

Mount Xpenology setup iso file:

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qm importdisk 100 /var/lib/vz/template/iso/arpl.img local-lvm

type menu.sh

m: Choose a model: DVA1622 geminilake-DT

n: Choose a Build Number: 42962

s: Choose a serial number

d: Build the loader

b: Boot the loader

Cmd: reboot from Proxmox command to reboot Xpenology

Note:
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The Storage Device passthrough for hard drive on Proxmox is NOT working for DSM!!!

/sbin/qm set 100 -virtio2 /dev/disk/by-id/ata-WDC_WD????FYYS-02W0B0_WD-WMAY???????? (Not working for Xpenology/DSM7)

https://youtu.be/BFCXqFsRiOs?si=E5zvdhSFs56-5mWV

Unable to install Ubuntu on HP Proliant DL120 G7 server 1U with 4 SATA HD

 The correct way to install is to unplug SATA#2-#4 to have only 1 SATA HD plug-in while installing Ubuntu OS. After OS installed, then you can plug reset of 3 SATA HD in.