move compute and cell nodes from one exadata to another

[sandheepani]

I have two exadata X4-2 machines of which configuration as follows:

 

Exadata 1 configuration:   Two X2-2 compute nodes, two X4-2 compute nodes, 7 storage cells. There are two clusters configured one comprising two X2-2 compute nodes and 3 Storage Cells and the second cluster has two X4-2 compute nodes and 4 Storage servers. Exadata software version is 12.1.2.3.4

 

 

Exadata 2  configuration: Two X4-2 compute nodes and three Storage Cells.Exadata software version is 18c

 

From the Exadata 1 box, I want to remove two X4-2 compute nodes and 4 Storage Cells and add to the Exadata 2 machine thus becoming an Elastic exadata Rack comprising 4 X4-2 compute nodes and 7 Storage CELLS.

What all should be the procedures to accomplish the above

[ErmanArslansOracleBlog]

You need to implement the Elastic configuration as you said..

first, you need to cables those nodes into your existing Exadata2.

After that, you will need to follow a similar approach as documented in :
"Elastic Configuration on Exadata (Doc ID 1953915.1)" Section :  "Adding an X5 Node into an Existing X5 Rack" or you may consider reimaging as documented in Section : "Procedure if Re-imaging (rather than using applyConfig) for a New Rack"

It also depends on your Exadata Software version..

Important note: The things that I wrote above, are just for giving you an idea, a way.. I just tried to help you for finding your own way..

These kinds of configurations require serious analysis, at least much more than the info you gave me.

"If I were you, I would definetely create an Oracle Support SR for this and get the approval of Oracle before implementing anything."