2 Storage area network The storage area network (SAN) is one of the most important aspects when implementing  and configuring IBM Spectrum Virtualize and IBM FlashSystem. This chapter does not describe how to design and build a flawless SAN from the beginning.  Rather, it provides guidance to connect IBM Spectrum Virtualize and Storwize in an existing  SAN to achieve a stable, redundant, resilient, scalable, and performance-likely environment.  However, you can take the principles here into account when building your SAN.  Important, IBM FlashSystem 9200:  On 11th February 2020 IBM announced the arrival of  the IBM FlashSystem 9200 to the family. This book was written specifically for IBM  FlashSystem 9100, however most of the general principles will apply to the IBM  FlashSystem 9200.  If you are in any doubt as to their applicability to the FlashSystem 9200 then you should  work with your local IBM representative.  This book will be updated to include FlashSystem 9200 in due course. The Flashsystem 9200 product guide is available at: IBM FlashSystem 9200 Product Guide This chapter includes the following sections: GLYPH<SM590000> SAN topology general guidelines GLYPH<SM590000> SAN topology-specific guidelines GLYPH<SM590000> IBM FlashSystem 9100 controller ports GLYPH<SM590000> Zoning GLYPH<SM590000> Distance extension for remote copy services GLYPH<SM590000> Tape and disk traffic that share the SAN GLYPH<SM590000> Switch interoperability ' Copyright IBM Corp. 2 020. All rights reserved. 11