install service pack 2 in sharepoint medium form

Servers

Operating   System

Configuration   Database version

Services   Running (check the attached file for details services running in all server)

1   Application Server

Windows   server 2008 R2 Enterprise , Service pack 1

14.0.6029.1000

Central   administration Service running in this  server Only

For   other services check the attached file

2^nd   Application Server

Windows   server 2008 R2 Enterprise , Service pack 1

In   two  Web front end servers

Windows   server 2008 R2 Enterprise , Service pack 1

Web   applications deployed  in these servers (these are load balanced   servers)

Microsoft   SharePoint Foundation Web Application running

Search   service is running in these server

In   two Index servers

Windows   server 2008 R2 Enterprise , Service pack 1

Search   service is running in these server

Database server

Windows   server 2010 Data center