iowait problems on Dell server

Hi

I just moved about 400 small accounts from an old celeron box to my new Dell PowerEdge 750 with a 2.8 GHz CPU, 1GB Ram and 2x 120GB Harddisk with a Sata Raid controller CERC configured with Raid1.

I'm quite surprised, that the serverload is even higher then before. I just realized that I have a very high iowait of 95% durring the cpanel backup process. Then to load is going to maybe 4-5. The server crashed already 2 times durring the backup process.

There are no processes which use a lot of CPU or MEM.

What can be the problem and how can I fix this?

Thanks
Mike

 

 

 

 

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