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Sharing LUN between 2 VMs...

 
Sean Meuser
Occasional Visitor

Sharing LUN between 2 VMs...

I have 2 VM boxes that need access to the same LUN. What is the best way to share this LUN between the two Virtual machines?

I am currently using an EVA4400 FC SAN environment and using vShpere 4. Both VMs are Windows Server 2008.

Thank you.
4 REPLIES 4
Uwe Zessin
Honored Contributor

Re: Sharing LUN between 2 VMs...

You need to set up an RDM (raw device mapping) to a separate virtual disk that will contain the data. Check the VMware documentation:

Setup for Failover Clustering and Microsoft Cluster Service
http://www.vmware.com/pdf/vsphere4/r40_u1/vsp_40_u1_mscs.pdf

Please note that this will NOT give you a file system that is concurrently shared by both Windows servers (e.g. you create a file on server A E:\ and you immediately see it on server B E:\). NTFS is not a shared FS and you must buy 3rd party software.
.
Jan Soska
Honored Contributor

Re: Sharing LUN between 2 VMs...

Hello Uwe,
could you recomend a 3rd party software which provide cluster option for ntfs? We think of similar setup on 2 VM's, with no success yet.
Thanks
Jan

Re: Sharing LUN between 2 VMs...

Why would you not use Microsoft Clustering between the two Windows VMs?

Note: While I am an HPE Employee, all of my comments (whether noted or not), are my own and are not any official representation of the company

Accept or Kudo

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Jan Soska
Honored Contributor

Re: Sharing LUN between 2 VMs...

We want use Windows Standard for our purpose. Is Microsoft Clustering available for standard version? We have no experience with it.

Jan