Presentation of external storage as Local to the SQL virtual servers

Hello.

Obligatory "I'm new" and 'sorry if this is in the wrong place' withdrawals.

I have two SQL Server virtual machines (running on ESX 3.5) which I am (at the level of the BONE) clustering for redundancy.  All their storage would come from two HP AiO servers storage or local storage of the ESX Server.  For now, we don't have VirtualCenter.

I need to present some sort of external storage for these virtual machines that they can (a) recognize as local so I can store files .mdf for SQL server on it, and (b) which can be configured as a cluster resource, so either can be accessed in the event of another machine down.

I tried to create a new virtual hard disk, pointing to the raw space on some of my existing storage, but "raw device mapping" is greyed out.  I guess it's because he needs a real San for gross external storage as a virtual disk local card.  I also tried new creation and extensions adding storage to the storage devices in the configuration of ESX storage.  There's no joy.

Should I VirtualCentre or a real SAN in order to present the raw disk space to a virtual machine?  If this is not the case, how can I do?  If so, which do I need and is there some kind of fudge or skilled people getaround may suggest that fits my needs of clustered SQL Server resources?

Thank you.

Rikk

Hello

Welcome to the forums! I have a few questions and comments.

To use a RDM in normal mode you will need a SAN/NAS/iSCSI server to get there. Since the storage of the IOA is an iSCSI SAN or a NAS you want present storage to ESX using one of these methods.  I guess that you already do using iSCSI or NFS? You are using.

I would not use Local Storage due to problems of redundancy.

You have space on your AiO storage to create another logical unit number?

A RDM is a logic unit number presented to the ESX host as a data bank that is not also a VMFS.  Once the logic unit number is presented for ESX you can do a RDM or you can do a VMFS and add another VMDK to your VM and move the .mdf for the new VMDK files. Or the other method should work. You can also access the server iSCSI directly from Windows and directly access a LUN to one end.

You have many options at this point. Which way you want to go?

Best regards

Edward L. Haletky

VMware communities user moderator

====

Author of the book "VMWare ESX Server in the enterprise: planning and securing virtualization servers, Copyright 2008 Pearson Education.»

SearchVMware Blog: http://itknowledgeexchange.techtarget.com/virtualization-pro/

Articles of blue Gears - http://www.itworld.com/ and http://www.networkworld.com/community/haletky

As well as virtualization at http://www.astroarch.com/wiki/index.php/Virtualization Wiki

Tags: VMware

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