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Hard Disk Has A Bad Block - if event is logged regularly replace the hard disk

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Last Modified: 2012-08-13
Hello,

Last night I started to get a disk error on our exchange server, dell poweredge 2950, 4 physical disks raid 5....

The event id 7 - saying The Device , \device\harddisk1\dr4, has a bad block.....

When looking at the event ID resolution it says if the event is logged regularly to replace the hard disk...the event has logged 126 times in 24 hours so I think it is time to replace it....

The question I have since we are in a raid 5 setup is how do I go about replacing.....ex do I just take the old one out.....put new one in and rebuild raid via dells server administrator? I have added extra disks before and have done this but I have never replaced a bad one....is their other things I should consider while doing this.....I do have a complete backup and can run another before changing the disk.....and do I have to do it when no one is utilizing the server?

thanks in advance

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