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Virtual Server 2005

Recent Virtual Server 2005 posts

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Hyper-V: adding multiple virtual machines to a cluster on the same disk

Source: microsoft.public.virtualserver
Sent: 07/17/2008
From: "Stefan Cuypers" <(email address - cut out)alias>
Message:

Hi,

Is it possible to have a single cluster disk containing more than one
virtual machine under Hyper-V? The machines would then fail over together.
We've done this on Virtual Server 2005 R2 in order to save on drive letters.
If we need one drive letter per virtual machine we're limited to about 25
virtual machines in the cluster!
I've tried to do it, but when adding the 2nd virtual machine to the cluster
the wizzard complains that the disk is not available.

regards,
Stefan.

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Related Messages

Re: Hyper-V: adding multiple virtual machines to a cluster on the same disk

Sent: 07/19/2008
From: "Rob McShinsky" <(email address - cut out).>
Message:

Drive letters should not be a problem since you can place guests on
individual drives without drive letters. You can use the Volume GUID
instead of the drive letter. It is a little confusing at first and some of
the tool sets for managing Volume GUID is a bit limited, but it works well.
It is also much easier to manage with SCVMM 2008 that is still in beta. In
the Hyper-V management console just use the Volume GUID like you would a
drive letter. To see the Volume GUIDs, go to a command prompt and use the
MOUNTVOL utility. If this sounds a bit like mud, please feel free to drop
me a line at my blog.

--
Rob McShinsky
http://www.virtuallyaware.net

"Stefan Cuypers" <(email address - cut out)alias> wrote in message
news:O$6IeO$(email address - cut out)...

Show quoted text

> Hi,
>
> Is it possible to have a single cluster disk containing more than one
> virtual machine under Hyper-V? The machines would then fail over together.
> We've done this on Virtual Server 2005 R2 in order to save on drive
> letters. If we need one drive letter per virtual machine we're limited to
> about 25 virtual machines in the cluster!
> I've tried to do it, but when adding the 2nd virtual machine to the
> cluster the wizzard complains that the disk is not available.
>
> regards,
> Stefan.
>
>

Re: Hyper-V: adding multiple virtual machines to a cluster on the same disk

Sent: 07/22/2008
From: "Stefan Cuypers" <(email address - cut out)alias>
Message:

Rob,

Thanks for the tip. This indeed seems to work, although there are 2 issues
with it:
- The Failover Cluster Management wizzard does not recognize the Volume GUID
paths. It reports warnings like: The path '\\?\Volume{... is not on a
failover cluster... So after adding the virtual machine to the cluster, we
have to manually add the storage and storage dependancies.
- Windows explorer (and all the Browse for files/folders dialog boxes) does
not seem to support the Volume GUID paths. So we can't browse them.

Stefan.

"Rob McShinsky" <(email address - cut out).> wrote in message
news:(email address - cut out)...

Show quoted text

> Drive letters should not be a problem since you can place guests on
> individual drives without drive letters. You can use the Volume GUID
> instead of the drive letter. It is a little confusing at first and some
> of the tool sets for managing Volume GUID is a bit limited, but it works
> well. It is also much easier to manage with SCVMM 2008 that is still in
> beta. In the Hyper-V management console just use the Volume GUID like you
> would a drive letter. To see the Volume GUIDs, go to a command prompt and
> use the MOUNTVOL utility. If this sounds a bit like mud, please feel free
> to drop me a line at my blog.
>
> --
> Rob McShinsky
> http://www.virtuallyaware.net
>
> "Stefan Cuypers" <(email address - cut out)alias> wrote in message
> news:O$6IeO$(email address - cut out)...
>> Hi,
>>
>> Is it possible to have a single cluster disk containing more than one
>> virtual machine under Hyper-V? The machines would then fail over
>> together.
>> We've done this on Virtual Server 2005 R2 in order to save on drive
>> letters. If we need one drive letter per virtual machine we're limited to
>> about 25 virtual machines in the cluster!
>> I've tried to do it, but when adding the 2nd virtual machine to the
>> cluster the wizzard complains that the disk is not available.
>>
>> regards,
>> Stefan.
>>
>>
>

Re: Hyper-V: adding multiple virtual machines to a cluster on the same disk

Sent: 07/22/2008
From: "Rob McShinsky" <(email address - cut out).>
Message:

Yes you are correct on both issues.

The first issue, the Volume GUID option in a Failover Cluster config is only
a problem when making a guest highly available with the Failover Cluster
console. If you are using SCVMM 2008, it will set this up for you whne you
provision or migrate a server to the cluster

The second issue as far as browsing Volume GUIDs is a pain. Working with
Windows you take the ability to browse files in a GUI for granted. You can
"see" what is on a Volume GUID from the command line i.e. dir \\?\Volume\\
(remember the second back slash. ) You can also use the copy command, not
xcopy or robocopy, to copy files to the Volume GUID. It is limited, and I
have put my 2 cents in on making this managability similar to that of a
drive letter, but it does work. Your Unix/Linux counterparts will be
impressed with you empracing the command line again.

--
Rob McShinsky
http://www.virtuallyaware.net

"Stefan Cuypers" <(email address - cut out)alias> wrote in message
news:(email address - cut out)...

Show quoted text

> Rob,
>
> Thanks for the tip. This indeed seems to work, although there are 2 issues
> with it:
> - The Failover Cluster Management wizzard does not recognize the Volume
> GUID paths. It reports warnings like: The path '\\?\Volume{... is not on a
> failover cluster... So after adding the virtual machine to the cluster, we
> have to manually add the storage and storage dependancies.
> - Windows explorer (and all the Browse for files/folders dialog boxes)
> does not seem to support the Volume GUID paths. So we can't browse them.
>
> Stefan.
>
> "Rob McShinsky" <(email address - cut out).> wrote in message
> news:(email address - cut out)...
>> Drive letters should not be a problem since you can place guests on
>> individual drives without drive letters. You can use the Volume GUID
>> instead of the drive letter. It is a little confusing at first and some
>> of the tool sets for managing Volume GUID is a bit limited, but it works
>> well. It is also much easier to manage with SCVMM 2008 that is still in
>> beta. In the Hyper-V management console just use the Volume GUID like
>> you would a drive letter. To see the Volume GUIDs, go to a command
>> prompt and use the MOUNTVOL utility. If this sounds a bit like mud,
>> please feel free to drop me a line at my blog.
>>
>> --
>> Rob McShinsky
>> http://www.virtuallyaware.net
>>
>> "Stefan Cuypers" <(email address - cut out)alias> wrote in message
>> news:O$6IeO$(email address - cut out)...
>>> Hi,
>>>
>>> Is it possible to have a single cluster disk containing more than one
>>> virtual machine under Hyper-V? The machines would then fail over
>>> together.
>>> We've done this on Virtual Server 2005 R2 in order to save on drive
>>> letters. If we need one drive letter per virtual machine we're limited
>>> to about 25 virtual machines in the cluster!
>>> I've tried to do it, but when adding the 2nd virtual machine to the
>>> cluster the wizzard complains that the disk is not available.
>>>
>>> regards,
>>> Stefan.
>>>
>>>
>>
>
>

Re: Hyper-V: adding multiple virtual machines to a cluster on the same disk

Sent: 07/23/2008
From: "Stefan Cuypers" <(email address - cut out)alias>
Message:

Great info. I tried the commandline but couldn't get it to work. The double
backslash in the end did the trick (I never would have guessed that :-) ).

Stefan Cuypers

"Rob McShinsky" <(email address - cut out).> wrote in message
news:(email address - cut out)...

Show quoted text

> Yes you are correct on both issues.
>
> The first issue, the Volume GUID option in a Failover Cluster config is
> only a problem when making a guest highly available with the Failover
> Cluster console. If you are using SCVMM 2008, it will set this up for you
> whne you provision or migrate a server to the cluster
>
> The second issue as far as browsing Volume GUIDs is a pain. Working with
> Windows you take the ability to browse files in a GUI for granted. You
> can "see" what is on a Volume GUID from the command line i.e. dir
> \\?\Volume\\ (remember the second back slash. ) You can also use the
> copy command, not xcopy or robocopy, to copy files to the Volume GUID. It
> is limited, and I have put my 2 cents in on making this managability
> similar to that of a drive letter, but it does work. Your Unix/Linux
> counterparts will be impressed with you empracing the command line again.
>
> --
> Rob McShinsky
> http://www.virtuallyaware.net
>
>
> "Stefan Cuypers" <(email address - cut out)alias> wrote in message
> news:(email address - cut out)...
>> Rob,
>>
>> Thanks for the tip. This indeed seems to work, although there are 2
>> issues with it:
>> - The Failover Cluster Management wizzard does not recognize the Volume
>> GUID paths. It reports warnings like: The path '\\?\Volume{... is not on
>> a failover cluster... So after adding the virtual machine to the cluster,
>> we have to manually add the storage and storage dependancies.
>> - Windows explorer (and all the Browse for files/folders dialog boxes)
>> does not seem to support the Volume GUID paths. So we can't browse them.
>>
>> Stefan.
>>
>> "Rob McShinsky" <(email address - cut out).> wrote in message
>> news:(email address - cut out)...
>>> Drive letters should not be a problem since you can place guests on
>>> individual drives without drive letters. You can use the Volume GUID
>>> instead of the drive letter. It is a little confusing at first and some
>>> of the tool sets for managing Volume GUID is a bit limited, but it works
>>> well. It is also much easier to manage with SCVMM 2008 that is still in
>>> beta. In the Hyper-V management console just use the Volume GUID like
>>> you would a drive letter. To see the Volume GUIDs, go to a command
>>> prompt and use the MOUNTVOL utility. If this sounds a bit like mud,
>>> please feel free to drop me a line at my blog.
>>>
>>> --
>>> Rob McShinsky
>>> http://www.virtuallyaware.net
>>>
>>> "Stefan Cuypers" <(email address - cut out)alias> wrote in message
>>> news:O$6IeO$(email address - cut out)...
>>>> Hi,
>>>>
>>>> Is it possible to have a single cluster disk containing more than one
>>>> virtual machine under Hyper-V? The machines would then fail over
>>>> together.
>>>> We've done this on Virtual Server 2005 R2 in order to save on drive
>>>> letters. If we need one drive letter per virtual machine we're limited
>>>> to about 25 virtual machines in the cluster!
>>>> I've tried to do it, but when adding the 2nd virtual machine to the
>>>> cluster the wizzard complains that the disk is not available.
>>>>
>>>> regards,
>>>> Stefan.
>>>>
>>>>
>>>
>>
>>
>

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