My Computers stores tons of data and which is backed up regularly.But many people don’t backup their data regularly saying that HDD seldom fails.As your PC is up more than 10hours a day, constantly downloading files or other Such actives with heavy Disk I/O.you never know when your HDD fails and you would hear a click-click sound of head crash. recently my friend lost his entire family photo collection, indeed said as all this childhood memories are now gone 
. there is nothing to worry about, just backup your precious data. you would do fine
Here are 2 tools I use to constantly monitor my HDD’s Health. you can also use them, so next time whenever your HDD fails you know it before.this is done using a Inbuilt feature in HDD’s called S.M.A.R.T.More information here: What is S.M.A.R.T. and how can we use it to avoid data disaster?
HDD Tune
This tool is useful for view S.M.A.R.T Information and checking bad sectors. It is a hard disk utility which has the following functions:
- Benchmark: measures the raw performance
- Transfer Rate
- Access Time
- CPU Usage
- Burst Rate
- Hard Disk information which includes partition information, supported features, firmware version, serial number, disk capacity, buffer size, transfer mode
- Hard Disk Health
- S.M.A.R.T. Information (Self-Monitoring Analysis and Reporting Technology)
- Power On Time
- Error scan
- Temperature display
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- Copy screenshot to clipboard
HD Tune is freeware!
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Download HD Tune( Basic free Version)
SpeedFan
Speed Fan is a general monitoring Utility which monitors voltages, fan speeds and temperatures in computers with hardware monitor chips. but here we are interested in S.M.A.R.T. info and showing hard disk temperature .
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Download(Freeware)