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Destaging threshold HUS VM / VSP / AMS2500

Question asked by Steffen Zimmermann on May 19, 2015
Latest reply on Jun 16, 2015 by Steffen Zimmermann

Hello HDS-Community!

We use CLPR (Cache Partitions) for external systems for several reasons (slow external system may impact the overall system), as recommend by HDS.

But what about CLPR for internal volumes?

In general, at which threshold starts the "emergency destaging" process, if the cache is flooded (for external and internal volumes) and does this process may have an impact to the overall system (blocking host IOs?)?

Situation: We have to "separate" two hosts for testing purposes with a dedicated CLPR and Ports. But what happens, if these two hosts start flooding the CLPR?

 

Thank you in advance

 

Kind regards

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