troubleshooting Question

New Server Choices_ SATA vs. SCSI

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mandolinred asked on
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My company is hosting a mission critical routing scheduling software for several regions.  As this project has grown, the current server (120 GB, dual processor) is running into performance issues and we need to break the regions up to different servers.  

I have been advised by our IT department regarding two choices in a similar price range:
1)  A 500 GB SATA hard drive
2)  A 300 GB SCSI hard drive

I have been advised that the SCSI route would give me twice the processing power as the SATA, but I would be giving up 200 GB of storage.  Considering the uncertainity of growth patterns, this may or may not be a deal breaker......I have to just go with my gut there.  
However, the difference between performance of SATA and SCSI may help me make that decision.  

So the question is, is my IT guru correct?  Will a SCSI drive really increase processing efficiency x2?  

Please advise.


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