Installation of SQL Server RAID 10 vs RAID 5 I am new to setting up SQL Servers and Vms. My predecessor used Raid 5 for C Drive where the SQL installation resided and RAID 10 for both database files and database logs.

I was wondering whether that is correct or should RAID 5 be utilized for SQL database files instead?

Any help?
I did a series of TCP-C tests against several of the common RAID levels and was surprised that in a write-heavy scenario RAID5 was over 3x slower than RAID10 (it was 319% slower, to be specific).  Your mileage may vary according to the actual ratio of reads versus writes in your scenarios.

-Kev