Solved

RAID Volume Performance

Posted on 2015-01-16
6
252 Views
Last Modified: 2016-12-08
Need 5 Volumes for Exchange Server Setup (OS, 2 Logs, 2 Data)
Which would be a better setup??

1 Large RAID 10 w/ 10 x 1.2TB 10K RPM drives and partition to 5 volumes.

OR

1st RAID 10 w/ 4 x 1.2TB drives (split to 3 partitions - OS, Logs1 & Logs2) and 2nd RAID10 w/ 6 x 1.2TB drives (split to 2 partitions for data)
0
Comment
Question by:gueraf
6 Comments
 
LVL 34

Expert Comment

by:Seth Simmons
ID: 40554418
i personally would have done the physical disk setup a bit differently but if those were my only 2 options i'd go with the first having one raid array
0
 

Author Comment

by:gueraf
ID: 40554427
How would you have done it?
0
 
LVL 34

Expert Comment

by:Seth Simmons
ID: 40554455
drive sizes for databases might vary depending on capacity needs though i would have smaller drives for transaction logs in a raid 1.  however, with SSD prices lower, would look at leveraging that.  on the other hand, some places where i've worked recently have the databases and logs on san volumes.  but for local storage i would also do raid 1 for the OS and raid 10 for databases
0
Network it in WD Red

There's an industry-leading WD Red drive for every compatible NAS system to help fulfill your data storage needs. With drives up to 8TB, WD Red offers a wide array of solutions for customers looking to build the biggest, best-performing NAS storage solution.  

 
LVL 47

Expert Comment

by:dlethe
ID: 40554507
None of the above. Get 4 disks as a raid 10 just for exchange db.  Make sure rAid chunk size is 64kb to match native io size

Then use a pair of fsster 15k rpm drives as raid1 for everything else. Use smallest chunk size the controller will allow.
0
 
LVL 47

Expert Comment

by:dlethe
ID: 40554509
If you are getting pounded by io (unlikely) then a pair of ssd for scratch table space later on
0
 
LVL 55

Accepted Solution

by:
andyalder earned 500 total points
ID: 40555102
Modern versions of Exchange are designed to cut the IOPS dramatically when compared to Exchange 2003 so the data can be stored on slow 7.2K disks, also DAGs mean you can use JBOD rather than RAID. Look at some of the ESRP certified designs at http://technet.microsoft.com/en-us/office/dn756396.aspx.

Just a quick quote from the HP 4000 mailbox solution on that list:
"Create a single “SAS Array X” per physical drive, then create a single Logical Drive from all free space in the SAS Array using a 256 KB or higher strip size and RAID 0." (Note that since you can't disable RAID on the controller they use a single disk configured as RAID 0 is equivalent to JBOD).

Dell's 2000 mailbox solution for the R720 is different, it uses just 1 DAG and has the disks mirrored, they still use 7.2K disks though.

Copy/paste doesn't work for the Dell PDF, search it for "stripe" though and again it says stripe size 256K or above for data, 64k for NTFS allocation unit size.
0

Featured Post

Optimizing Cloud Backup for Low Bandwidth

With cloud storage prices going down a growing number of SMBs start to use it for backup storage. Unfortunately, business data volume rarely fits the average Internet speed. This article provides an overview of main Internet speed challenges and reveals backup best practices.

Question has a verified solution.

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

Suggested Solutions

Every server (virtual or physical) needs a console: and the console can be provided through hardware directly connected, software for remote connections, local connections, through a KVM, etc. This document explains the different types of consol…
The article will include the best Data Recovery Tools along with their Features, Capabilities, and their Download Links. Hope you’ll enjoy it and will choose the one as required by you.
This video Micro Tutorial explains how to clone a hard drive using a commercial software product for Windows systems called Casper from Future Systems Solutions (FSS). Cloning makes an exact, complete copy of one hard disk drive (HDD) onto another d…
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…

930 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

Need Help in Real-Time?

Connect with top rated Experts

9 Experts available now in Live!

Get 1:1 Help Now