A customer wants to consolidate management of their XtremlO environment to as few XMS machines...

To consolidate the management of an XtremIO environment, the minimum number of XtremIO Management Server (XMS) machines required depends on the compatibility of the XMS with the various XtremIO Operating System (XIOS) versions present in the environment. A single XMS can manage multiple clusters as long as the XIOS versions are within the same major release family or are compatible with the XMS version.

Given the XIOS versions listed:

Two clusters running XIOS 4.0.2-80

Two clusters running XIOS 4.0.4-41

Two clusters running XIOS 4.0.25-27

Two XtremIO X2 clusters running XIOS 6.0.1-27_X2

All the clusters running XIOS version 4.x can be managed by a single XMS because they belong to the same major release family. The XtremIO X2 clusters running XIOS 6.0.1-27_X2 would typically require a separate XMS that supports the 6.x family. However, it is possible for a single XMS to manage both 4.x and 6.x clusters if the XMS version is compatible with both, which is often the case with newer XMS versions that support a wider range of XIOS versions.

Therefore, the minimum number of XMS machines required to manage all the listed clusters, assuming compatibility, is one.

References:

Dell community discussions on vXMS version compatibility1.

Introduction to XtremIO X2 Storage Array document, which may include details on XMS and XIOS compatibility2.

XtremIO Bulletin Volume I-A 2022 for XIOS and XMS version guidelines3.