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Microsoft, Server 2003, 2003, Clustering

Hello Experts,

I am trying to setup clustering and one of the process that needs to be done is the configuration of Quorum Disk.  My question is...do I need to put this on a seprate disk and also on a separate bus?  Or can I configure this on a logical drive?  For example, if I have a 20 GB HD and I split 15 GB for the C and 5 GB for the Q where the quorum is to be located.  Is this okay?  The entire physical drive will be raided onto a second physical drive.  

Any advice or suggestions is greatly appreciated.  As always, thank you for your time on this matter.
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coperator
Asked:
coperator
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1 Solution
 
merowingerCommented:
on a cluster both nodes must have access to the quroum ressource -> quorum disk!
If u take a internal disk as quorum disk...one of the nodes cannot connect to this ressource
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coperatorAuthor Commented:
merowinger,

Just read your first comment and in the process of pulling the link, but are you suggesting then that the quroum resource (quroum disk) be somewhere external of the nodes and not reside in the first node on any other nodes in the cluster?  Maybe this was the reason that when I intentionally tunred off the first node of my test cluster that the second node didn't work due to the fact that the quroum resource was located on the first node.  

Again, thank you for your time on this matter.
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merowingerCommented:
yeah the quorum disk must be external (scsi , fibrechannel), dynamic...

Here's a nice checklist:
http://technet2.microsoft.com/WindowsServer/en/library/1c70139e-8fdf-4cba-b77f-24b5f0049b511033.mspx
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coperatorAuthor Commented:
merowinger,

Thank you.  Will read the link and keep you posted.
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merowingerCommented:
your welcome :)
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coperatorAuthor Commented:
merowinger,

So...the quorum resource (or quorum disk) must be a disk that is separate from where the O/S resides and must be on a separate bus.  Also, it cannot be a shared drive like the one that one would create on explorer?  So, my options are iSCSI, Fiber Channel or a HD on a separate bus.  Is that correct?

As always, thank you for your time on this matter.
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merowingerCommented:
yes that's right!
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coperatorAuthor Commented:
merowinger,

Okay...so I can allocate the quorum resource onto a SAN with iSCSI with 1GB of HD for a 2 node  cluster?  And if my node 1 goes down, node 2 should function since the quorum is on the SAN.  Is that a right assumtion?

Again thank you for your time.
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merowingerCommented:
yes 1GB is enough!
U should test if both nodes have access to that external disk..
if this is so...u should could make a failover, so the other node should be able to access the SAN
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coperatorAuthor Commented:
merowinger,

Will try today and will keep you posted.  Thank you!
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coperatorAuthor Commented:
merowinger,

Need further clarification.  If the Quorum Resource is residing on a SAN virtual drive and that drive is defined on Node-1 of that cluster (my goal is to configure an Active / Passive cluster with two nodes)and that Node-1 goes down, that in turn will bring the cluster down cause Node-2 wouldn't know where the quorum resource is.  Does this mean that I need to go into Node-2 and repoint as to where the quorum resource is?  If so, how can I make this automatic so that when Node-1 fails, Node-2 should continue to function and pickup the functions that Node-1 was doing.  Or I am totally confuse here?

Again, thank you for your time on this matter.
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merowingerCommented:
a: Normally you install a external disk for 2 servers as follows:
    1. NodeA is on, NodeB is off ---> Configure external disk on NodeA
    2. NodeB is on, NodeA is off ---> Configure external disk on NodeB

b: In your Clusteradministrator there's a pre-defined which has included your external disk (data & quorum)
    1. Both cluster nodes know the disk ressources..but only one can own it
    2. Both clusters are connected via a private LAN (Heartbeat e.t. Crossover cable)
    3. If NodeA is down it release the disk ressources, NodeB notice that, cause Heartbeat fails, so it maps the external disk and continues the "job"
That's a Active/Passive Cluster...On a Active/Active Cluster there are more external disk ressources, and each clusternode own a specified disk

c: What do u mean with "SAN virtual drive" isn't it physically external?!?
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merowingerCommented:
addon: here's a nice docu with screenshots..that u can see how the quroum ressource...is configured: http://technet.microsoft.com/en-us/library/aa996134.aspx
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coperatorAuthor Commented:
merowinger,

Thank you for the explanation and the link.  I will be working on this today and will keep you posted.  Again, thank you!  For your assistance and will keep you posted.
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