Relplication / Duplicationg a Production Client in Real Time

Hi Guys,
please i have a mandate.we want to replicate our production client (client A) into another client (Client Z) in real time such that all transaction that is carried out in production client A is replicated immediately in client Z.This became necessary so that should client A go down for any reason client Z backs up immediately.
Please how do we about this?
What technology do we use ? ALE?
Please a detailed step-by-step configuration will be appreciated.

@ Soumyaprakash : yes
@ Breakpoint : Yes ... that is the whole idea- a disaster recovery plan. To minimize data loss , we want the production client A to replicate into backup production client Z in real time.
Have been assigned the task, hence i'll appreciate if i get a detailed technical guidance on how to go about this not a high-surface description.
I was thinking configuring ALE but i want to know if data will be replicated in real-time i.e for example if a customer posts a transaction in Client A ,the same will be replicated in client Z at the same time .
Suggestions please.

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MODERATOR: Do not post (or request) email address or links to copyrighted or confidential information on these forums. If you do, the thread will be LOCKED and all points UNASSIGNED.
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