We are working on implementing a new ERP software that runs on Posgresql called Odoo or OpenERP. All of our operational and administrative departments will be using this software, Sales, Accounting, Transportation, Receiving etc... Initially I had set up the SQL server as a VM on our Hyper V 2012 host, with just a single VHD. After reading more into best practice for SQL it looks like splitting up the Logs an Databases across two different physical drives is best for I/O performance. On the Hyper V host the drives are 15k 2TB drives set up in RAID 1.
I'm not really sure now if this will be the best set up, or if we will run into performance issues. This Hyper V host also runs a DC and another server for our Anti Virus and some other misc. things.
Is there really a big performance hit if you do not separate the logs and databases across...