Hi Ponnusamy,
a. Will it possible to convert my UAT to PRD (distributed installation to HA)
Technically YES it is possible. You may perform homogeneous system copy to achieve the same.
But the question here is UAT server will have lot of junk data which normally we may not be ok to put it into Production. Have a thought on this.
a. If (a) is not possible, What will be the best approach to migrate Phase 1 UAT data to PRD
IF you are 100% sure there is no junk data in UAT client, you may perform client copy to production client to copy customizing , master data and transaction data.
b. In HA Setup Can I install SRM, MDM on same Server. Is this the best approach or do we need to go with separate box for each.
It is advisable to keep production instances on separate box or separate virtualized partitions.
Hope this helps.
Regards,
Deepak Kori