Solved

SQL2014 best RAID practice

Posted on 2015-01-08
3
69 Views
Last Modified: 2016-12-08
Hi Experts,

I have to install two SQL 2014 servers on premise.
Both server are in an availability group.

What do you recommend for the raid setup ?
I have seen

Adaptive Read Ahead
Read Ahead

Write Back
Write through
Force write back

My partitions are:

OS -> Raid1
DB -> Raid10
LOGS -> Raid10
TempDB -> on SSD with Raid1

But I was not sure with READ AHEAD and WRITE BACK.
Maybe you can give me some hints.
0
Comment
Question by:Eprs_Admin
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 43

Accepted Solution

by:
Eugene Z earned 500 total points
ID: 40540981
it depends on what for you plan  to use it
also id it VMware? physical? SAN based storage?
How many array controllers? etc..

check
SQL Server Storage Best Practices
http://sqlmag.com/storage/sql-server-storage-best-practices

also check about disk caching
http://www.experts-exchange.com/Database/MS-SQL-Server/Q_27806793.html
"
As far as disk caching goes, you need to make sure you are safe or you risk major data corruption risk.  Make sure your cache is backed by a battery or is redundant.  If not, the data in cache will be lost during a reboot/crash and your data is in a hosed inconsistent state. This is especially true with Write Back Caching.
 Check out:
http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=173993

 Also then go to this link and actually get a real baseline:
http://sqlserverpedia.com/wiki/SAN_Performance_Tuning_with_SQLIO

  You can use it but turn off any READ caching, SQL server is a in memory db engine and will use RAM as much as possible.  Using cache memory for reads is a waste for SQL Server.  If you need to read from your disk cache for SQL, there's something wrong.


"
0
 

Author Comment

by:Eprs_Admin
ID: 40557193
Thanks a lot
0
 

Author Closing Comment

by:Eprs_Admin
ID: 41650337
Great, I have found the best setup for my SQL AG.
0

Featured Post

Webinar: Aligning, Automating, Winning

Join Dan Russo, Senior Manager of Operations Intelligence, for an in-depth discussion on how Dealertrack, leading provider of integrated digital solutions for the automotive industry, transformed their DevOps processes to increase collaboration and move with greater velocity.

Question has a verified solution.

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

Ever wondered why sometimes your SQL Server is slow or unresponsive with connections spiking up but by the time you go in, all is well? The following article will show you how to install and configure a SQL job that will send you email alerts includ…
Recently we ran in to an issue while running some SQL jobs where we were trying to process the cubes.  We got an error saying failure stating 'NT SERVICE\SQLSERVERAGENT does not have access to Analysis Services. So this is a way to automate that wit…
Via a live example, show how to shrink a transaction log file down to a reasonable size.
Viewers will learn how to use the UPDATE and DELETE statements to change or remove existing data from their tables. Make a table: Update a specific column given a specific row using the UPDATE statement: Remove a set of values using the DELETE s…

737 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