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The HDD is connected to the server itself..
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The HDD is connected to the server itself..

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Can I run the integrity check when database is mounted?
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Can I run the integrity check when database is mounted?

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No they have to be offline.
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Hi Getting the below event ID, Is this the Hard ware (disk) issue? How to troubleshoot?<br />
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event ID 509<br />
Information Store (3148) First Storage Group: A request to read from the file &quot;D:\Exchsrvr\MDBDATA\Fourt<wbr />h\Adyard-f<wbr />ourth Mailbox Store.edb&quot; at offset 63357337600 (0x0000000ec0644000) for 4096 (0x00001000) bytes succeeded, but took an abnormally long time (101 seconds) to be serviced by the OS. In addition, 42 other I/O requests to this file have also taken an abnormally long time to be serviced since the last message regarding this problem was posted 28130 seconds ago. This problem is likely due to faulty hardware. Please contact your hardware vendor for further assistance diagnosing the problem.
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Hi Getting the below event ID, Is this the Hard ware (disk) issue? How to troubleshoot?

event ID 509
Information Store (3148) First Storage Group: A request to read from the file "D:\Exchsrvr\MDBDATA\Fourth\Adyard-fourth Mailbox Store.edb" at offset 63357337600 (0x0000000ec0644000) for 4096 (0x00001000) bytes succeeded, but took an abnormally long time (101 seconds) to be serviced by the OS. In addition, 42 other I/O requests to this file have also taken an abnormally long time to be serviced since the last message regarding this problem was posted 28130 seconds ago. This problem is likely due to faulty hardware. Please contact your hardware vendor for further assistance diagnosing the problem.

event ID 509 - exchange 2003

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.