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  • Subject: Re: Disk issue: More arms versus improved hardware
  • From: jeff_carey@xxxxxxxxxx
  • Date: Tue, 27 Feb 2001 10:48:10 -0600

I too am wondering about this.  If you have more than twice the data on 
the same sized disk, it would seem that the seek time for an arm to find 
the data would be about half (at least).  Wouldn't that help mitigate the 
effect of having fewer arms?  Also, each arm is a point of failure as 
well, so would the performance increase of more arms outweigh the 
decreased time between failures?  I haven't done the math yet, but it's 
probably worth considering.


Jeff Carey
Technical Specialist
AS/400 Technology
Transaction Processing Systems
DF5-1W 
847-948-2191
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