Slow IO Performance when running dd (Doc ID 1931027.1)

Last updated on OCTOBER 07, 2014

Applies to:

Solaris SPARC Operating System - Version 10 10/08 U6 to 11.2 [Release 10.0 to 11.0]
Information in this document applies to any platform.

Symptoms

Problem Statement:
2 servers connected to identically configured ST6140 LUNs :  
The customer is using dd for backup and observed that  dd performance on one is 3 times slower than the other

Here's a comparison test

 

Cause

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