Solved

Changing SCSI Bus sharing mode from Physical to None

Posted on 2014-01-06
7
1,090 Views
Last Modified: 2014-01-12
I need to make some configuration changes on one of the SCSI controller which has got 12 RDM attached into the Guest OS (Windows server 2003).

Does that cause any outage or drive letter change to the Operating system ?
what is the impact caused by doing this ?

Thanks.
0
Comment
  • 3
  • 3
7 Comments
 
LVL 119

Assisted Solution

by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 500 total points
ID: 39761442
To many any changes, to the virtual machine configuration, will require you to shutdown the virtual machine and make the changes. So scheduled downtime will be required.

But changes to the configuration, should not cause any OS issues.

However, before making any changes to any production VM, ensure you have a full VM backup, not a snapshot, mistakes can be made.
0
 
LVL 7

Author Comment

by:Senior IT System Engineer
ID: 39761498
Thanks for the reply,

in this case I cannot make any backup because the backup software failed to take snapshot of this VM (File Server).
0
 
LVL 119
ID: 39761570
You may want to check why, you cannot backup, RDM LUNs, could be the issue.
0
NAS Cloud Backup Strategies

This article explains backup scenarios when using network storage. We review the so-called “3-2-1 strategy” and summarize the methods you can use to send NAS data to the cloud

 
LVL 7

Author Comment

by:Senior IT System Engineer
ID: 39761588
It is, but my concerns is about changing the scsi bus sharing type only ?

Downtime is fine for me, but what happened after I changed the scsi bus type ?
0
 
LVL 119

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 500 total points
ID: 39761594
No impact to the VM. Often clustered nodes require physical.

Physical - Virtual disks can be shared by virtual machines on any server.

None - Virtual disks cannot be shared by other virtual machines.
0
 
LVL 19

Expert Comment

by:compdigit44
ID: 39766811
If you don't mine me asking what is causing you to change you SCSI mode?  have you check to make sure the mode you are changing to is support by your SAN?
0
 
LVL 7

Author Comment

by:Senior IT System Engineer
ID: 39766834
comp,

THe reason is that the VM was provisioned wrongly :-) a simple mouse click on the "physical" mode prevents the Snapshot of C: drive and also DRS and VMotion.
0

Featured Post

Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

Question has a verified solution.

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

Suggested Solutions

This article will show you how to create an ISO CD-ROM/DVD-ROM image (*.iso), and MD5 checksum signature, for use with VMware vSphere Hypervisor 6.5 (ESXi 6.5). It's a good idea to compare checksums, because many installations fail because of a corr…
In this step by step tutorial with screenshots, we will show you HOW TO: Enable SSH Remote Access on a VMware vSphere Hypervisor 6.5 (ESXi 6.5). This is important if you need to enable SSH remote access for additional troubleshooting of the ESXi hos…
Teach the user how to install log collectors and how to configure ESXi 5.5 for remote logging Open console session and mount vCenter Server installer: Install vSphere Core Dump Collector: Install vSphere Syslog Collector: Open vSphere Client: Config…
This Micro Tutorial steps you through the configuration steps to configure your ESXi host Management Network settings and test the management network, ensure the host is recognized by the DNS Server, configure a new password, and the troubleshooting…

806 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