Unassigned Devices - Managing Disk Drives and Remote Shares Outside of The Unraid Array
Unassigned Devices Plugin
Unassigned Devices (UD) includes a lot of functionality and has become a bit complex. Please read the first and second post. You will find answers to most of your questions.
Note: You will need to install the Unassigned Devices Plus (UD+) plugin to enable HFS+ and APFS (Apple file formats) and exFAT (flash larger than 64MB) disk mounting, and to enable 'Destructive Mode' for formatting of some UD supported disk formats.
UD and
The plugin sets a 15 minute idle time with 'hdparm -S180' to the device when it is mounted. You could issue a no idle time to the device in the script when it is mounted with 'hdparm -S0'. This tells the drive to never go to the idle (spin down) mode. The script will look like this:
#!/bin/bash
PATH=/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin
## Available variables:
# AVAIL : available space
# USED : used space
# SIZE : partition size
# SERIAL : disk