When health value derrease, I didn't receive any alarm or ma

[Neo]

Today, I found health vaule of my hard disk decreased from 100 to 98.

Health value

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But there is nothing in log or alert page.
and I did not receive any alarm or mail.
I already config alert as shown below.

Alert setting

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And I config the E-mail correctly，because I can receive daily reaport.
So, what is the problem, soft bug or my problem.

[hdsentinel]

Sorry, but I can confirm that there is no bug/problem here: if the Health is adjusted only because of Windows Event Log errors, then no alert triggered, which is normal - as in some cases Windows Events may appear on perfect drives too.

If you prefer to receive alert in this case, you can configure a very strict Health % threshold for the drive: on the Overview page, double click on the Health % bar and select (for example) 99% as Yellow (warning) and 95% as Red (alert) levels. So then you'll receive alert when the Health goes down even to 99%, regardless of what cause that.

[Neo]

OK, now I understand, Thanks