From OpenSCADAWiki
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| HDD temperature (hddtemp)
"Temperature_hd{DEV}" || Devices DEV of the HDD Disks, available in the system. ||
- "Name" (disk[string])
- "Measure unit" (ed[string])
- "Temperature" (t[integer])
| 
Deprecated mostly and replaced by "Disk SMART (hddsmart)". The hddtemp program must be installed, configured and running as the service.