SZ_dlnaNAS small simple NAS storage to downloading and streaming video in local network

Today i will create small and simple home NAS storage for home multimedia.
I used old one IDE HDD with enclosure and Orange Pi zero, someday cheapest SBC on Aliexpress.
I choose Armbian as OS on Orange Pi, its lightest OS for Orange Pi. 
Just download from armbian.com website OS image for Orage Pi zero board.

To write downloaded OS image file into SD card i use balenaEtche software, available on balena.io website.

Run balenaEtcer and click Flash from file button
Choose downloaded image file
Then click on Select target and choose your SD card 
Press Flash! and wait while balenaEtcher writes file to SD card.

After image flashed to SD card, remove card from reader and insert into Orange Pi zero.
Connect all wires to Orange Pi zero, HDD enclosure, Ethernet cable, power.
I checked IP address of Orange Pi zero on my router DHCP registration table, another way is using UART interface on Orange Pi zero, but you need additional USB to UART adapter.
When i know IP address, i connect to Orange Pi zero with Putty SSH client.
Login username is root and password 1234.
After successful login Armbian asks to change default password.

When password changed, i install system on External HDD that connected via USB
Run command: nand-sata-install

Choose Boot from SD

Then select your connected HDD

Choose filesystem, i use ext4

After system files copied to External HDD, and system restarted, i make new directory in root directory and named in Storage.
Commands are:
cd /
mkdir Storage
chmod 777 Storage
and for checking
ls -la
We can see that folder Storage have for permissions for all users read and write in this directory.

Next installing Transmission torrent client:
sudo apt install transmission-daemon

When installed, need to stop service to change configuration:
systemctl stop transmission-daemon

Then edit transmission-daemon config file:
nano /etc/transmission-daemon/settings.json

Edit:
 "download-dir": "/Storage",
 "incomplete-dir": "/Storage/Incomplete",
 "incomplete-dir-enabled": true,
 "rpc-authentication-required": false,
 "rpc-bind-address": "0.0.0.0",
 "rpc-whitelist-enabled": false,

After configuration done, start daemon again:
systemctl start transmission-daemon

Checking status of daemon:
systemctl status transmission-daemon

Checking webpage, entered Orange Pi zero ip_address:9091 port.

Next i decided to run transmission-daemon with nobody user and nogroup group.
nano /etc/inint.d/transmission-daemon

Change USER field to
USER=nobody:nogroup

Also need to change user in systemd configuration.
nano /lib/systemd/system/transmission-daemon.service

Change:
User=nobody
Type=notify
ExecStart=/usr/bin/transmission-daemon -f --log-error --config-dir=/var/lib/transmission-daemon/info

Next reload systemctl daemons configuration:
systemctl daemon-reload

Checking status of transmission-daemon service:
systemctl status transmission-daemon

Changing owner of transmission-daemon folders:
chown -R nobody:nogroup /var/lib/transmission-daemon
chown -R nobody:nogroup /etc/transmission-daemon

Next i install samba for file sharing with home windows based pc:
sudo apt install samba

After installation edit samba config file:
nano /etc/samba/smb.comf

In section "# This option controls how unsuccessful authentication attempts are mapped to anonymous connection"
edit and insert lines:
security = user
map to guest = bad password

In section "Share Definitions"
remove all default lines and add:
[DLNA-NAS]
    path =/Storage
    guest ok = yes
    read only = no
    create mask = 0777
    directory mask = 0777

Save, exit and restart Samba service by command:
systemctl restart smbd

Checking samba, find our nas in network, and trying to create and delete files. If all works Samba installed correctly.

Next going to install MiniDLNA multimedia streaming software
sudo apt install minidlna

After installed editing configuration file
nano /etc/minidlna.conf

Change media_dir parameter
media_dir=/Storage

Save, exit and restart minidlna service
systemctl restart minidlna

I will check minidlna on PC with media player, in future will be checked also on TV

Latest one software will be web server, i choose lighttpd
sudo apt install lighttpd

Going into NAS IP address to check if web browser working

Next going into /var/www/html folder and removing all files
cd /var/www/html
rm *

Installing python and python3-pip
sudo apt -install python3 python3-pip

Installing python module bottle
pip install bottle

Next creating poweroff.py file, and inserting python code for system shutdown
nano poweroff.py

import os
from bottle import route, run

@route('/<name>')
def index(name):
    if name == "power":
        os.system("sudo shutdown -h now")

run(host='0.0.0.0', port=8080)

Editing rc.local file to autostart python service
nano /etc/rc.local

Adding our file destination path
python3 /root/poweroff.py

Save, exit and reboot system
sudo reboot

After system rebooted checking service availiability
ss -4nlp
Latest one is our python service listening port 8080

Editing webpage
nano /var/www/html.index.html
And adding html code for main screen of our NAS

<!DOCTYPE html>
<html>
<head>
<style>
.container { 
  position: relative;  
}
.button {
  background-color: #4CAF50; /* Green */
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
  width:100%;
}
.center {
  margin: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
.button2 {background-color: #008CBA;}
}

</style>
</head>
<body>
<p id="demo"></p>
<br>
<br>
<div class="container">
<h1 class ="center">SZ_DLNA-NAS Web page</p>
</div>
<br>
<br>
<br>
<br>
<div class="container">
  <div class="center">
    <button class="button button2" onclick="window.location.href=+':9091'">Transmission</button>
	<br>
	<button class="button button2" onclick="window.location.href=+':8200'">miniDLNA</button>
  </div>
</div>
</body>
</html>

Save, exit, and then check entering in browser NAS server IP address

That all, i use this NAS about half of year and its works perfectly for downloading and streaming serials in local network.

Python and index.html files download link