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Implementing the IBM SAN Volume Controller and FlashSystem 820 by Denis Senin, Joao Marcos Leite, Christian Burns, Danny Bryant, Jon Tate

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Diagnostics, planned outages, and troubleshooting
This chapter provides basic information about the diagnostics and troubleshooting tools that are available to help identify and solve common problems that can affect environments comprised of the IBM SAN Volume Controller (SVC) and IBM FlashSystem model 820 storage systems.
The following topics are covered:
I/O group volume migration for planned outages
Non-disruptive FlashSystem firmware updates with volume mirroring
Volume migration to another storage pool for planned outages
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