Solved

SQL Server Disk Configuration Question

Posted on 2013-11-18
3
187 Views
Last Modified: 2013-11-19
SQL Server 2012 running on Server 2012.

Multiple instances on the same SQL Server.

I have enough hard drive configuration to give each instance EITHER:
a) it's own log file hard drive
b) it's own data file hard drive

I cannot give each instance its own log file hard drive AND its own data file hard drive.

So which would be optimal for performance?  Individual data file hard drives (with all log files on a single shared drive), or individual log file hard drives (with all data files on a single shared drive)?

Thanks.
0
Comment
Question by:gateguard
3 Comments
 
LVL 25

Assisted Solution

by:Mohammed Khawaja
Mohammed Khawaja earned 200 total points
ID: 39658127
My recommendation would be to distribute data files and log files equally across all disks and I am assuming all drives are of similar speed.  As an example I would configure instance 1 data files to be on D: and logs on E: and it would the opposite for instance 2.
0
 
LVL 1

Accepted Solution

by:
BradySQL earned 300 total points
ID: 39658360
If you have to choose I would put the logs on their own volume for a few reasons.

1. Data files can easily be separated later by creating additional datafiles and moving high IO items such as a specific table or Indexes to the secondary datafile.

2. Logs have a lot of writes that happen where the data volume doesn't necessarily. This can be different depending on your situation.

Other thoughts, you may want to consider the impact of sharing some volumes with your logs and separating tempDB to its own volume. This has a lot to do with transactions per second and where you see your bottlenecks happening.

There is not golden answer here, it might also involve you setting up one scenario and watching to see what your IO throughput looks like. And making some changes as you go.
0
 

Author Closing Comment

by:gateguard
ID: 39659331
Thanks!
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
MS SQL Delete Query 9 30
Sql server insert 13 27
T-SQL: "HAVING CASE" Clause 1 23
Query Help - MSSQL - Averages 5 25
Slowly Changing Dimension Transformation component in data task flow is very useful for us to manage and control how data changes in SSIS.
I have a large data set and a SSIS package. How can I load this file in multi threading?
Familiarize people with the process of utilizing SQL Server functions from within Microsoft Access. Microsoft Access is a very powerful client/server development tool. One of the SQL Server objects that you can interact with from within Microsoft Ac…
Via a live example, show how to setup several different housekeeping processes for a SQL Server.

786 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question