You could have downloaded HDData 2.4 from our software library for free. HDData.exe is the most frequent filename for this program's installer. The following versions: 2.4, 2.2 and 2.0 were the most frequently downloaded ones by the program users. This software was originally created by Molenkamp. HDData lies within System Utilities, more precisely HDD Management.
From the developer:
HDData is a program that measures the Hard Drive Temperature and all other kind of Hard Drive parameters. You can control what actions HDData will execute for you when the Hard Drive Temperature reaches a Warning and/or an SMART Alarm setting. It allows you to protect your data through protecting your Hard Drive.
You may want to check out more software, such as Tableau Disk Monitor, MariusSoft Disk Scrubber or Virtual Disk Utility, which might be similar to HDData.