March 2008
Intermediate to advanced
326 pages
10h 22m
English
book
SAN Volume Controller: Best Practices and Performance Guidelines
by Jon Tate, Deon George, Thorsten Hoss, Ronda Hruby, Ian MacQuarrie, Barry Mellish, Peter Mescher
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Chapter 9.4.9. Summary of Metro Mirror and Global Mirror rules
Page 167
Chapter 9. Copy services 167 Time must be less than 1 ms for the primary cluster. A number in excess of this might indicate that an I/ O Group is reaching its I/ O throughput limit, which can limit performance. CPU Utilization Percentage CPU Utilization must be below 50%. Sum of Backend Write Response Time and Write Queue Time for Global Mirror MDisks at the remote cluster. Time needs to be less than 100 ms. A longer response time can indicate that the storage controller is overloaded. If the response time for a specific storage controller is outside of its specified operating range, this must be investigated for the same reason. Sum of Backend Write Response Time and Write ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.