?
Solved

Raid Level for Virtualized Exchange 2010 mailbox role

Posted on 2012-03-21
7
Medium Priority
?
600 Views
Last Modified: 2012-03-26
Hi experts, currently I have an IBM DS3400 storage with one hugh RAID 5 volume. I have the intention to virtualized Exchange 2010 mailbox server role for DAG using vsphere 5.0. I have about 100 mailboxes.  For best performance with respect to storage, should I add additional harddisks to the existing raid 5 volumes or create a totally seperate array (4 disks, RAID 5)  for better performance?

Currently, on my physical Exchange 2007 server, I'm using RAID 1 for OS, RAID 5 for DB and another RAID 1 for logs. For the virtualized Exchange 2010, what do I do? Just create 3 seperate LUN from the SAN array containing RAID 5 and attached to this virtual machine? Will the performance be affected?
0
Comment
Question by:totallypatrick
[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
  • 3
  • 3
7 Comments
 
LVL 123
ID: 37746489
I would create a RAID 10 Volume or LUN for your VMware Datastore.
0
 
LVL 2

Expert Comment

by:EvertG
ID: 37746659
Depending on your environment. If it is a single server environment or you going to have a cluster.
Single server you should use raid 5 for data and raid 1 for log. If you use cluster advice is to place os on raid 1 and the rest as jbod as in exchange 2010 the io on the disk is much less then before.
So first design your exchange environment and then look what hardware you want to use for it.
0
 

Author Comment

by:totallypatrick
ID: 37746937
Raid 10 would be the best but would it make a big diff in speed for exchange 2010?
Do i create a seperate array in my SAN storage for better performance or i can just use part of a single big array for it?
I know that raid 1 would be for os and so on for physical server but for virtual servers we can't really use thAT right? as all partitions are actually coming from a single raid5 or raid10 array in the San storage ? Correct me if i'm wrong as i'm still learning.
0
Comprehensive Backup Solutions for Microsoft

Acronis protects the complete Microsoft technology stack: Windows Server, Windows PC, laptop and Surface data; Microsoft business applications; Microsoft Hyper-V; Azure VMs; Microsoft Windows Server 2016; Microsoft Exchange 2016 and SQL Server 2016.

 

Author Comment

by:totallypatrick
ID: 37755748
I read that a single big array would cater for better performance as there's more disc in the RAID 5 array.

Also for Exchange 2010, we can actually create 3 seperate LUNS from the RAID 5 array and assigned it to the VM for better ROI?
0
 
LVL 123
ID: 37756087
Correct, more disks per Array (any array) would be better. But RAID 10 performs better than RAID 5.
0
 

Author Comment

by:totallypatrick
ID: 37756122
Would 10 disks in a raid 5 array be faster then 4 disc in a RAID 10 array?
0
 
LVL 123

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 2000 total points
ID: 37756161
Very similar in read and write, if you do the calculations in IOPS.

RAID 5 just slightly more, but more disks, more spindles, more performance, more IOPS

Total IOPS = (DriveIOPS * #Drives) / (ReadRatio + (RAIDWritePenalty * WriteRatio))

Write Penality for RAID 5 is 4, RAID 10 is 2.

As you already have RAID 5, I would just add them into the set.
0

Featured Post

Problems using Powershell and Active Directory?

Managing Active Directory does not always have to be complicated.  If you are spending more time trying instead of doing, then it's time to look at something else. For nearly 20 years, AD admins around the world have used one tool for day-to-day AD management: Hyena. Discover why

Question has a verified solution.

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

The following article is comprised of the pearls we have garnered deploying virtualization solutions since Virtual Server 2005 and subsequent 2008 RTM+ Hyper-V in standalone and clustered environments.
This article will help to fix the below errors for MS Exchange Server 2013 I. Certificate error "name on the security certificate is invalid or does not match the name of the site" II. Out of Office not working III. Make Internal URLs and Externa…
In this Micro Video tutorial you will learn the basics about Database Availability Groups and How to configure one using a live Exchange Server Environment. The video tutorial explains the basics of the Exchange server Database Availability grou…
The basic steps you have just learned will be implemented in this video. The basic steps are shown to configure an Exchange DAG in a live working Exchange Server Environment and manage the same (Exchange Server 2010 Software is used in a Windows Ser…
Suggested Courses

770 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