Thousands of vertical market applications (e.g., dental practice management, logistics dispatch, pre-2015 QuickBooks Enterprise) have DLLs and stored procedures that break on later versions of SQL Server. The X86 folder of this DVD is particularly valuable for 32-bit legacy apps that never received a 64-bit update.
This specific DVD (521546) is the original Microsoft MSDN (Microsoft Developer Network) disc image for SQL Server 2008 R2 Standard Edition. The "EN" denotes English language. The key feature of this release is its multi-platform support: it includes installers for 32-bit (x86), 64-bit (x64), and the now-defunct Intel Itanium (IA64) architecture. En Sql Server 2008 R2 Standard X86 X64 Ia64 Dvd 521546
If you are searching for 521546 to build a new production system, stop. Instead, upgrade as follows: Thousands of vertical market applications (e
Most users ignore the IA64 folder. If you attempt to run the X64 setup on an Itanium server, it will fail. You must navigate to IA64 and run setup there. However, drivers and Windows Server for Itanium are even harder to source than the SQL DVD itself. The "EN" denotes English language