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VSP Dynamic Pool Utilisation / Subscription ratios

Question asked by Mark Reynolds on Sep 27, 2013
Latest reply on Oct 4, 2013 by Patrick Steele

Afternoon All,


This is my first post, and its really just to get some views from the community around dynamic pools and subscription/utilisation ratios.  We have several pools configured, but the majority of our systems go into one large Dynamic Tiering Pool which contains a mixture of SAS and SSD either internal to the VSP or external on a HUS.


Our Dynamic Tiering Pool is around 200TB, in terms of setting thresholds and alerts, and capacity planning etc, It's about risk profile really, but what sort of figures do people think are reasonable for over-subscription and utilisation? I was thinking it would be a combination of utilisation and subscription ratios, so 130% Subscription or 80% utilisation (as an example).