Solution : https://service.sap.com/sap/support/notes/803452 (SAP Service marketplace login required)
Key words : 
link   /sapdb/data_nodeb/wrk/sid -> /sapdb/data_nodea/wrk/sidor set, dbmcli dbm_setpath indepprogpath /sapdb/programs_nodea  dbmcli dbm_setpath indepdatapath /sapdb/data_nodeayou, /sapdb/programs -> /sapdb/programs_nodea          /sapdb/data     -> /sapdb/data_nodea general information, <password>   param_startsession    param_put <directory>    param_checkall    param_commitsession                     sap standard, /sapdb/programs -> /sapdb/programs_nodeb          /sapdb/data     -> /sapdb/data_nodeb, /sapdb/sid/db db_create <sid> <dbm_user>, ] dbm_setpath indepprogpath <directory>                     sap standard, ] dbm_setpath indepdatapath <directory>                     sap standard, /sapdb/data_nodea/config/sid files, /saphelp_nw04/helpdata/en/23/d1a03cc24efd1de10000000a114084/frameset
Related Notes : 
       
| 1463606 | MaxDB as of 7.8: Directories in UNIX cluster for failover | 
| 1433093 | Adaptive Computing with MaxDB/liveCache as of Version 7.8 | 
| 979401 | Adaptive Computing with MaxDB/liveCache | 
| 829408 | Upgrading a database in the UNIX cluster |