You can migrate directly to 11.5 and to the new HW with PCD, assuming you meet the requirements for PCD.
https://youtu.be/2C_gy_XmBmE
Otherwise, DRS backup, DRS restore on new HW and then upgrade.
For the upgrade, mandatory reading is:
A) Upgrade guide
B) Release notes
C) README from ISO
all the requirements, procedure, etc. for the upgrade, are in the above docs.
HTH
java
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