gathagan
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Is it feasible to use an NCS slave node for LAN-free backup?

If I were to cluster two OES 11SP2 servers, can the slave node be utilized to back up the shared storage without impacting the master node?

I've never set up NCS, so I'm not clear on what changes, if any, a slave node is allowed to make on the shared storage.
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Re: Is it feasible to use an NCS slave node for LAN-free backup?

Am 23.09.2015 um 07:56 schrieb gathagan:
>
> If I were to cluster two OES 11SP2 servers, can the slave node be
> utilized to back up the shared storage without impacting the master
> node?


No. Only one node has access to the shared data at any given time.

CU,
--
Massimo Rosen
Novell Knowledge Partner
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http://www.cfc-it.de
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Knowledge Partner
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Re: Is it feasible to use an NCS slave node for LAN-free backup?

In article <gathagan.73nqvc@no-mx.forums.microfocus.com>, Gathagan
wrote:
> slave node / master node

That concept doesn't really apply to NCS. Both servers are live and can
have resources running on them, just that each resource can only be
live on one node at a time.
The idea being that you spread out your resources as the way to load
balance with sufficient total server performance in the cluster that
you can lose one node and still have everything running, having had
very little down time of the resource that hopefully wasn't even
noticed by the end users. That gives you the overhead to handle
backups on the node running the resource in question. The trick is to
have a backup system that either understands NCS directly or just
handles all resources on each node.


Andy of
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gathagan
New Member.

Re: Is it feasible to use an NCS slave node for LAN-free bac

Thank you both for your responses.

Andy,
I was just using the nomenclature that Novell uses for the NCS nodes.
I know that it's not the same concept as the more prevalent usage you see in, for instance, GroupWise.

In my particular case, I'm attempting to minimize the impact of backup on the performance of my file storage servers from the users' standpoint.

If it's a matter of what resources are running, then running my backup software on one of the nodes is not a problem.

I'm using SEP sesam. As I understand it, sesam does not rely on setting a file's archive bit; it keeps track via its own database.
In conversations with SEP, my understanding is that since the backup process doesn't need to write to the drives being backed up, read-only access works fine.

The question that arises is related to Massimo's answer: What happens if a user has a file open via one node and the backup process attempts to read it via the other node?
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Knowledge Partner
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Re: Is it feasible to use an NCS slave node for LAN-free backup?

Am 23.09.2015 um 23:26 schrieb gathagan:
>

rks fine.
>
> The question that arises is related to Massimo's answer: What happens if
> a user has a file open via one node and the backup process attempts to
> read it via the other node?


It can't. The "other" node can not access the storage that is not active
on it. PLease don't overthink the matter, use my first - rather simple -
statement as is.

CU,
--
Massimo Rosen
Novell Knowledge Partner
No emails please!
http://www.cfc-it.de
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