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10-26-2008

Article is up:
http://www.servercare.nl/Lists/Posts/Post.aspx?ID=72

/ ) Regards,
/ /_________
_|__|__) Paul Weterings
/ (O_) http://www.servercare.nl
__/ (O_)
____(O_)

Paul Weterings wrote:

Quote:

> I'm actually in the process of writing an article on this, which will be
> online in a few days.
>
> The trick is to have your virtual machines on separate clustered disks,
> when you add a new VM, the cluster service checks at what clustered disk
> the virtual machine is hosted. It will create "Service and application
> groups' based on what disks these Virtual Machines are found.
>
> Example:
>
> server1
> server2
>
> are on iSCSI Cluster Disk 1.
>
> server9
> server8
>
> are on iSCSI Cluster disk 2
>
> When creating/importing vm's into cluster manager, it will create two
> groups, the first containing server1 and server2, the other containing
> server9 and server8.
>
> A mistake that would be easily made would be to expect each VM to be
> assignable to a node. Since we are using shared storage, that is of
> course not possible. Therefore the groups rather than the machines can
> have node affinity.
>
> If you have created separate groups as described above, you'll find that
> in the properties of the -groups- it is possible to select a particular
> node to be the 'preferred owner'. This way you can 'balance' the usage
> of resources on you fail over cluster.
>
> As said: I'll have a more in-depth & details article available soon on
> my website. Until then, I hope this explanation answers your question!
>
>
> / ) Regards,
> / /_________
> _|__|__) Paul Weterings
> / (O_) http://www.servercare.nl
> __/ (O_)
> ____(O_)
>
>
> John wrote:

Quote:

>> Hi all,
>>
>> If I have 12 VMs on two nodes Windows 2008 x64 Enterprise servers and
>> I configued it as A/A failover cluster, does that mean that I only
>> need two service and application group which each group hosts 6VMs
>> (one 6VMs active on node1 and another 6VMs active on node2 )
>>
>> What if I go for A/A/A cluster with three nodes, does that mean I need
>> three service and application groups (which each group hosts 4VMs (one
>> 4VMs active on node1, one 4VMs on node2 and one 4 VMs on node3)? How
>> do I configure PREFERRED OWNERS between them? any suggestions?
>>
>> Thank you!
>>
>>
>>
>>
>>

10-26-2008	#3 (permalink)
Paul Weterings n/a posts	Re: Hyper-V Highly Available Article is up: http://www.servercare.nl/Lists/Posts/Post.aspx?ID=72 / ) Regards, / /_________ _\|__\|__) Paul Weterings / (O_) http://www.servercare.nl __/ (O_) ____(O_) Paul Weterings wrote: Quote: > I'm actually in the process of writing an article on this, which will be > online in a few days. > > The trick is to have your virtual machines on separate clustered disks, > when you add a new VM, the cluster service checks at what clustered disk > the virtual machine is hosted. It will create "Service and application > groups' based on what disks these Virtual Machines are found. > > Example: > > server1 > server2 > > are on iSCSI Cluster Disk 1. > > server9 > server8 > > are on iSCSI Cluster disk 2 > > When creating/importing vm's into cluster manager, it will create two > groups, the first containing server1 and server2, the other containing > server9 and server8. > > A mistake that would be easily made would be to expect each VM to be > assignable to a node. Since we are using shared storage, that is of > course not possible. Therefore the groups rather than the machines can > have node affinity. > > If you have created separate groups as described above, you'll find that > in the properties of the -groups- it is possible to select a particular > node to be the 'preferred owner'. This way you can 'balance' the usage > of resources on you fail over cluster. > > As said: I'll have a more in-depth & details article available soon on > my website. Until then, I hope this explanation answers your question! > > > / ) Regards, > / /_________ > _\|__\|__) Paul Weterings > / (O_) http://www.servercare.nl > __/ (O_) > ____(O_) > > > John wrote: Quote: >> Hi all, >> >> If I have 12 VMs on two nodes Windows 2008 x64 Enterprise servers and >> I configued it as A/A failover cluster, does that mean that I only >> need two service and application group which each group hosts 6VMs >> (one 6VMs active on node1 and another 6VMs active on node2 ) >> >> What if I go for A/A/A cluster with three nodes, does that mean I need >> three service and application groups (which each group hosts 4VMs (one >> 4VMs active on node1, one 4VMs on node2 and one 4 VMs on node3)? How >> do I configure PREFERRED OWNERS between them? any suggestions? >> >> Thank you! >> >> >> >> >>
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