Capacity planning

1

Hi,

I am assigned to migrate the databases from SQL Standard 2012 /2014 to SQL Enterprise 2016.
Around 20 production databases with different database sizes comes all togther 500gb. In these 20 dbs only 3 databases are having maximum IO. In these 3 dbs one is around 300gb and other 2 dbs are 100gb and 50 gb. And rest of the database sizes are in MB & no such IO operations.
To build the new server i need to give all CPU,HardDisk,Memory, etc details to my boss. so that he will create new VM. Once he creates the new VM then i will install SQL 2016. next i will take backups one by one and restore it in destination new server.
For this how should i calculate capacity planning like (core,cpu,harddisk,storage etc.)
Pls guide me follow some best practice to build new server. What are the things i need to takecare while suggesting the server and SQL capacity planning?

Thanks in advance.

2

You'll definitely want to look into data compression, which will cut down the total data size anyway.

In general, I'd say your new system will be 25-35% overall more efficient handling the data just because of the data compression, slightly more for I/O specifically.

If you compress (almost) all large tables in the db, you don't want to compress the SQL backup itself.