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## 4.1.6 Migration matrix to PowerHA SystemMirror V7.2.3 

Table 4-1 on page 92 shows the migration options between versions of PowerHA. 

Important:  Migrating from PowerHA V6.1 to Version 7.2.1 is not  supported. You must upgrade to either Version 7.1.x or Version 7.2.0 first. 

<img src='content_image/988084.jpg'>

## 4.2 Migration scenarios from PowerHA V7.1.3 

a. R: Rolling, S: Snapshot, O: Offline, and N: Nondisruptive, E ezupdate 

This section further details the test scenarios that are used in each of these migration methods: 

GLYPH<SM590000> Rolling migration 

GLYPH<SM590000> Snapshot migration 

GLYPH<SM590000> Offline migration 

GLYPH<SM590000> Nondisruptive upgrade 

