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## Volumes 

## 5 

In IBM FlashSystem 9100, a volume is logical disk provisioned out of a storage pool and is recognized by a host with a unique identifier (UID) field. This chapter describes the several types of volumes and guidance for managing the properties. 

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> Overview of volumes 

GLYPH<SM590000> Guidance for creating volumes 

GLYPH<SM590000> Thin-provisioned volumes 

GLYPH<SM590000> Mirrored volumes 

GLYPH<SM590000> HyperSwap volumes 

GLYPH<SM590000> VMware Virtual volumes 

GLYPH<SM590000> Cloud volumes 

GLYPH<SM590000> Volume migration 

GLYPH<SM590000> Preferred paths to a volume 

GLYPH<SM590000> Changing the preferred node moving a volume between I/O groups 

GLYPH<SM590000> Volume throttling 

GLYPH<SM590000> Volume cache mode 

GLYPH<SM590000> Additional considerations 

