[Webinar] Learn how to a build a cloud-first strategyRegister Now

x
?
Solved

How to configure Microsoft MultipathIO Configuration Tool for Compellent SAN attached storage

Posted on 2010-11-17
3
Medium Priority
?
5,452 Views
Last Modified: 2012-08-13
I have a HP Proliant DL380 G6 Server with x2 HP FC1142SR 4GB PCI-e FC cards installed running Windows Server 2008 R2.  Compellent SAN attached storage has been successfully presented to the server and test data copied to the SAN attached disks within Windows.  For FC resiliency I've installed the feature Microsoft MultipathIO onto the server.  I've configured MultipathIO as per MS Technet article http://technet.microsoft.com/en-us/library/ee619778(WS.10).aspx.  In the MPIO properties dialog box I've added the device hardware ID's "COMPELNTCompellent Vol" & "COMPELNTCompellent Vol1" after a reboot the MPIO tab has appeared within the SAN attached disks in windows disk management.  Within the MPIO tab the device is only showing 1 path and not 2 as I would expect.  I've attempted testing resiliency by removing one of the fibre cables and the failover does not work as some of the SAN external attached disks disappear from Windows.  I've tried MPIO policies Round Robin and Fail Over only both without success.

Does anyone know how to configure Microsoft MultipathIO using compellent storage?  Any help will be much appreciated.
0
Comment
Question by:LG_IT
  • 2
3 Comments
 
LVL 47

Expert Comment

by:David
ID: 34213552
Were you aware that not all Compellent systems support MSFT's MPIO stack?

You didn't mention the specific model you have, so I can't give you a link to the setup guide, but if you just click o this link, you will find howto docs for whatever model you have.

http://www.compellent.com/search-results.aspx?searchtext=multipath

In general, setting this up properly requires qualified HBAs, registry settings, and NVRAM changes to your HBA which may not be default.  If you are using QLOGIC or EMULEX, in particular, you probably have to use their Java-based utility to make some changes to expose both paths, and remove the default qlogic/emulex MPIO software.    Also, the drivers, firmware, and BIOS typically need to be at certain revisions.

Back in early 2000s I worked with some vendors trying to get mpio working with a few HBAs, and there is a LOT that has to be done for anything other than dual-ported FC JBOD disks.  The subsystem itself needs firmware that supports it because MPIO sends some low-level commands that may not be supported by your hardware.
0
 

Accepted Solution

by:
LG_IT earned 0 total points
ID: 34317364
Issue was escalated to Compellent who confirmed that a change to the server object to be MPIO aware on the Compellent SAN was necessary.  Once this change was made the issue was resolved.
0
 

Author Closing Comment

by:LG_IT
ID: 34358704
Issue was escalated to Compellent who confirmed that a change to the server object to be MPIO aware on the Compellent SAN was necessary.  Once this change was made the issue was resolved.
0

Featured Post

Get your Disaster Recovery as a Service basics

Disaster Recovery as a Service is one go-to solution that revolutionizes DR planning. Implementing DRaaS could be an efficient process, easily accessible to non-DR experts. Learn about monitoring, testing, executing failovers and failbacks to ensure a "healthy" DR environment.

Question has a verified solution.

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

Backups and Disaster RecoveryIn this post, we’ll look at strategies for backups and disaster recovery.
How much do you know about the future of data centers? If you're like 50% of organizations, then it's probably not enough. Read on to get up to speed on this emerging field.
This Micro Tutorial will teach you how to reformat your flash drive. Sometimes your flash drive may have issues carrying files so this will completely restore it to manufacturing settings. Make sure to backup all files before reformatting. This w…
In this video, Percona Director of Solution Engineering Jon Tobin discusses the function and features of Percona Server for MongoDB. How Percona can help Percona can help you determine if Percona Server for MongoDB is the right solution for …

864 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