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Microsoft SQL Server 2012 - Seperate drives for Logs and DB?

Hi,

I'm just after peoples thoughts really.

All our MS SQL Servers are virtual machines.
Currently the VM's have two LUNS presented to them (iSCSI via Passthrough disks), one for SQL databases and the other for SQL logs
The LUNS all reside on the same group of Dell Equallogic iSCSI Arrays

Considering that the database and log drives both exist on the same storage arrays and on the same disks, is it worth having separate LUNS for databases and logs?

Performance is great with the current setup, so I don't see combining logs and databases on a single LUN will affect that.

We backup every 30 mins using Microsoft DPM

Any thoughts?
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Andrej Pirman
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Thanks Labsy - we've started moving to single LUN's so we'll see how it goes!