TREX 7.1 Embedded Search for PLM

Hi there,
Currently we have TREX Server 7.00 Build 49
However, I am bit of confused with the following notes "Note 1249465 - TREX 7.1: Installing TREX for Embedded Search", where they are talking about TREX 7.10...Is that mean we cannot use the Currently installed TREX 7.00 Build 49 for Embedded search PLM? or Do we need to do a fresh install of TREX 7.10 Embedded search separately on a server for PLM Search?
Any thoughts would be appreciated.
Thanks in advance
Kumar

Hi Frank,
I have a quick question regards to High Availability for TREX 7.1. I have read the most part of the documentation for "SAP NetWeaver Standalone Engine Search and Classification TREX 7.10 on multiple hosts"
[TREX 7.10 on Multiple hosts|https://websmp203.sap-ag.de/~sapidb/011000358700000854982007E/TREX71InstallMultipleHosts.pdf]
I would like to get your thoughts on what I am planning to put together. We have 2 physical server with 8 CPUs, 32 GB memory each, with a network storage for Centralized Storage to make it HA. To make it HA, we need at least
1 Master
1 Backup
2 Slaves
For an example:
Server 1 host: SAPTREX1
Server 2 host: SAPTREX2
Do all of them needs to be installed on a separate OWN hosts? or can I install Master and First Slave on the SAPTREX1 and then Backup and Second Slave on the SAPTREX2. Is this is something possible?
Please let me know what do you think about this.
Thanks in advance.
Kumar
or Can I install the Master and Backup on a

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