hi, w2k3 server restarted automatically and I cheked in event logs it shows EventID :11, source : disk, Description : The driver detected a controller error on \Device\Harddisk0\DR0 and Event ID :24606 , source : Cissesrv Description : Logical drive 1 configured on array controller P400 located in server slot 1 returned a fatal error during a read/write requestfrom/to the volume. Logical block address 770c3d0,block count 8 and command 20were taken from the failed I/O request. Array controller P400 located in server slot 1 is also reporting that the last physical drive to report a fatal condition (associated with this logical request) is located on bus 0 and ID 7.

Hi, Seems you are having issues with the raid controller. Did you check with the HP tool to see the status of the array? Other than that this really isn't an Exchange question, but have a look at the array with the HP tools to see if all checks out fine. /MartinExchange is a passion not just a collaboration software.

You should definitely take a look at the Array Configuration Utility from HP (ACU). This will tell you in what state your array is. If it is degraded due to a drive failure (and most probably, based on the errors you've copy/pasted, it will), you'll need to replace the failed disk(s) with new ones. The array will automatically start rebuilding than. Michael

What model of the HP is it? The G6 series have had a lot of issues, so give the support a call and check with them Also check so you have the latest firmware on your machineJonas Andersson | Microsoft Community Contributor Award 2011 | MCITP: EMA 2007/2010 | Blog: http://www.testlabs.se/blog | Follow me on twitter: jonand82

Hi chanu, Your issue seems not related with exchange, I would suggest that you could contact the vendor to get more hlep. Above gave some good suggestion. Regards! GavinPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.