Solved

Raid Level for Virtualized Exchange 2010 mailbox role

Posted on 2012-03-21
7
598 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 121
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
Does Powershell have you tied up in knots?

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

 

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 121
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 121

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 500 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

Automating Your MSP Business

The road to profitability.
Delivering superior services is key to ensuring customer satisfaction and the consequent long-term relationships that enable MSPs to lock in predictable, recurring revenue. What's the best way to deliver superior service? One word: automation.

Question has a verified solution.

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

How to resolve IMCEAEX NDRs in Exchange or Exchange Online related to invalid X500 addresses.
This article outlines why you need to choose a backup solution that protects your entire environment – including your VMware ESXi and Microsoft Hyper-V virtualization hosts – not just your virtual machines.
This video discusses moving either the default database or any database to a new volume.
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…

688 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