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. Table 4-1 Migration matrix table  PowerHA a To V7.2.0 To V7.2.1 To V7.2.2 To V7.2.2SP1 V7.2.3 From  V7.1.3 R, S, O, and N R, S, O, N,  and E R, S, O, N,  and E R, S, O, N,  and E R, S, O, N,  and E From  V7.2.0 N/A R, S, O, N,  and E R, S, O, N,  and E R, S, O, N,  and E R, S, O, N,  and E From  V7.2.1 N/A N/A R, S, O, N,  and E R, S, O, N,  and E R, S, O, N,  and E From  V7.2.2 N/A N/A N/A R, S, O, N,  and E R, S, O, N,  and E From  V7.2.2SP1 N/A N/A N/A N/A R, S, O, N,  and E a. R: Rolling, S: Snapshot, O: Offline, and N: Nondisruptive, E ezupdate 4.2 Migration scenarios from PowerHA V7.1.3 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 92  IBM PowerHA SystemMirror V7.2.3 for IBM AIX and V7.2.2 for Linux