OES 2015 SP1 has specific hardware and software requirements.
Prior to installing OES, make sure your server machine and network environment meet the requirements outlined in the following sections:
OES 2015 SP1 Server (Physical):
Preparing to Install OES 2015 SP1
in the OES 2015 SP1: Installation Guide.
OES 2015 SP1 Server (Virtual):
System Requirements
in the OES 2015 SP1: Installation Guide.