| Author |
Message |
Marco
Guest
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 Posted:
Tue Jan 11, 2005 2:29 pm Post subject:
>2 nodes |
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Hi all,
I've three questions regarding clustering:
1. Is it possible to run more than 2 nodes with a SCSI device as a shared
storage?
2. If SCSI doesn't work, what are alternative techniques?
3. How is the heartbeat realized with more than two nodes? Surely not with a
crossover cable..
Is it then necessary to create a own heartbeat network?
Many thanks for your help!
Best regards,
Marco |
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Rodney R. Fournier [MVP]
Guest
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| Posted:
Tue Jan 11, 2005 6:36 pm Post subject:
Re: >2 nodes |
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Answers inline...
Cheers,
Rod
MVP - Windows Server - Clustering
http://www.nw-america.com - Clustering
http://www.msmvps.com/clustering - Blog
"Marco" <digijoe@gmx.net> wrote in message
news:eDwpee79EHA.2012@TK2MSFTNGP15.phx.gbl...
| Quote: | Hi all,
I've three questions regarding clustering:
1. Is it possible to run more than 2 nodes with a SCSI device as a shared
storage?
|
No, anything greater is not supported.
| Quote: | 2. If SCSI doesn't work, what are alternative techniques?
|
Fiber Channel. iSCSI.
| Quote: | 3. How is the heartbeat realized with more than two nodes? Surely not with
a crossover cable..
|
Using a dedicated (though it does not have to be) Hub/Switch. The heartbeat
is multicast and signed.
| Quote: | Is it then necessary to create a own heartbeat network?
|
Its a very good idea.
| Quote: |
Many thanks for your help!
Best regards,
Marco
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Marco
Guest
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| Posted:
Wed Jan 12, 2005 1:01 am Post subject:
Re: >2 nodes |
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thanks Rod!
"Rodney R. Fournier [MVP]" <rod@die.spam.die.nw-america.com> schrieb im
Newsbeitrag news:%23OLd5o99EHA.3420@TK2MSFTNGP10.phx.gbl...
| Quote: | Answers inline...
Cheers,
Rod
MVP - Windows Server - Clustering
http://www.nw-america.com - Clustering
http://www.msmvps.com/clustering - Blog
"Marco" <digijoe@gmx.net> wrote in message
news:eDwpee79EHA.2012@TK2MSFTNGP15.phx.gbl...
Hi all,
I've three questions regarding clustering:
1. Is it possible to run more than 2 nodes with a SCSI device as a shared
storage?
No, anything greater is not supported.
2. If SCSI doesn't work, what are alternative techniques?
Fiber Channel. iSCSI.
3. How is the heartbeat realized with more than two nodes? Surely not
with a crossover cable..
Using a dedicated (though it does not have to be) Hub/Switch. The
heartbeat is multicast and signed.
Is it then necessary to create a own heartbeat network?
Its a very good idea.
Many thanks for your help!
Best regards,
Marco
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Russ Kaufmann [MCT]
Guest
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| Posted:
Wed Jan 12, 2005 6:47 am Post subject:
Re: >2 nodes |
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"Rodney R. Fournier [MVP]" <rod@die.spam.die.nw-america.com> wrote in
message news:%23OLd5o99EHA.3420@TK2MSFTNGP10.phx.gbl...
| Quote: |
I've three questions regarding clustering:
1. Is it possible to run more than 2 nodes with a SCSI device as a shared
storage?
No, anything greater is not supported.
|
I am going to disagree with Rod as I have seen clusters with multiple node
all running SCSI in a supported configuration using a SAN device. Older EMC
symmetrix boxes, for example, have a SCSI card option which will allow for 4
SCSI connections to the symmetrix box and all four can access LUNs on the
frame.
However, this is not a solution that I would recommend.
| Quote: | 3. How is the heartbeat realized with more than two nodes? Surely not
with a crossover cable..
Using a dedicated (though it does not have to be) Hub/Switch. The
heartbeat is multicast and signed.
|
I strongly suggest a dedicated hub because it is inexpensive, and I have
never seen a problem with a hub losing information or being misconfigured.
Regrettably, I have seen many network admins screw up a switch config and
cause a major failure of the heartbeat network. I have also seen many
switches lose their minds after power cycling.
Good luck. |
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