Hi guys,
I know this topic was discussed many time, I just think that my situation is a bit different so I wanted to hear your opinion.
I am migrating my SQL Server and at the moment I am in the process of buying new hardware.
I know that the ideal solution should be:
RAID 1 for OS
RAID 5 for database files
RAID 10 for log files
But as I cannot afford having RAID 5 and RAID 10 in the same server I need to decide whether to use RAID 5 or 10.
Now I know that you should always use RAID 10 for Databases but I run quesries to see the portion of read/writes on the database and got the following:
On mdf file:
number of R/W
Reads 82% 90 000
Writes 18% 20 000
On ldf file:
Read 5% 250
Writes 95% 5000
As I have to put mdf and ldf on the same drive, when I combine total Reads/Writes I got 90250 Reads and 25000 Writes...