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I suppose that you have to look at clustering not automatically
replicating databases as a "feature" if you want to maintain a positive
mental attitude.
Suppose you have your iSeries with lots of databases. But at your remote
site you're running some lowly wintel solution. And there is only a few
databases at that remote site that you really need clustered over to
there. Not automatically putting the databases there frees up disk, comm,
and processor.
Now, the Akornn software does not do it automatically either upon creation
of a new database. You just set up some steps to run it on a periodic
basis.
And, yes, you can still get the Akornn software to create the replicas on
the remote systems even if they are not in the cluster. It doesn't care
if the remote server is in the cluster or not.
What possible problems can Akornn cause? Just remember to do the steps in
this method:
Run the akornn command to ensure that LocalDomainServers is in the ACL
TELL CLREPL QUIT - do this on both the from and to servers
TELL REPLICA QUIT - do this on both the from and to servers
Run the akornn command to create the replica's
LOAD CLREPL - do this on both the from and to servers
LOAD REPLICA - do this on both the from and to servers
Leaving CLREPL and REPLICA running during the akornn creation of the
replicas WILL corrupt your data.
Rob Berendt
--
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
Benjamin Franklin
meovino@estes-express.com
Sent by: domino400-bounces@midrange.com
01/29/2003 12:06 PM
Please respond to Lotus Domino on the iSeries / AS400
To: Lotus Domino on the iSeries / AS400
<domino400@midrange.com>
cc:
Fax to:
Subject: Re: Domino Clustering (was Re: Trying to add Admin
group tomailfilesACL and running out of time)
Rob,
So clustering does not automagically replicate each database to the other
clusters as its created? You have to manually replicate it to all the
cluster nodes?
If you're not concerned with clustering failover, what does it get you?
Honestly, I had hoped that any db's created would be automatically
replicated to the other nodes in the cluster.
But the software from akornn takes care of this?
If you don't have two nodes actually clustered, can the akornn software
still automatically replicate all new db's created on system A to system
B?
Mike E.
PS - Don't ask why they want the second node to be a non-400 box.
rob@dekko.com
Sent by: To: Lotus Domino on the iSeries / AS400
<domino400@midrange.com>
domino400-bounces+meovino=estes-express.com@mi cc:
drange.com Subject: Re: Domino Clustering (was Re:
Trying to add Admin group to
mailfilesACL and running out of time)
01/29/03 11:34 AM
Please respond to Lotus Domino on the iSeries
/ AS400
It's not hard to set up.
Yes you can cluster between differing platforms. (Why would you want to?
:-) )
We have several iSeries running Domino. We bring the primary down every
night to do backup. We bring the secondary down during the day on
Thursdays to do a weekly save/rclstg/ipl. It's freaking amazing how
seamless this is! I bet there is no other iSeries High Availability
vendor who comes even close. On the primary we have 8 Domino partitions.
Each partition is in a separate cluster. On the secondary is a matching
partition.
Primary Secondary Cluster
NOTES01 NOTES02 NOTESCLUSTER
GDDATA GDDATA2 GDDATACLUSTER
...
I would read the standard Domino documentation, and the Domino for iSeries
documentation on doing this.
I don't know if there is a redbook dealing with an actual case study.
The toughest is making sure that if you create a database on the primary
that you remember to replicate it to the secondary. That is THE biggest
reason that we purchased the akornn software. 800+ users with any
turnover at all and the mail files alone are a maintenance headache.
Now, granted occasionally a file gets corrupted (and I have a long
standing pmr opened on this). But it sure is a lot easier to blast the
file on the primary and replicate it back over from the secondary than it
is to dig out the backup tapes. It takes an average of 3 hours to restore
a single mail file from tape. Of course, our Domino backup alone spans
onto the fourth 3590 tape (green button). We find ourselves rearranging
the ifs SAV to get the directory most likely to need restored done first.
Rob Berendt
--
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
Benjamin Franklin
meovino@estes-express.com
Sent by: domino400-bounces@midrange.com
01/29/2003 10:22 AM
Please respond to Lotus Domino on the iSeries / AS400
To: Lotus Domino on the iSeries / AS400
<domino400@midrange.com>
cc:
Fax to:
Subject: Domino Clustering (was Re: Trying to add Admin
group to mail filesACL and running out of time)
Rob,
Sounds like you're doing Domino clustering. I have a couple of questions:
1. Can you cluster Domino servers on different platforms (i.e. OS/400 &
Windows 2K), or do they all have to be on the same platform?
2. Is it difficult to set up? Can I do it myself, or should I bring in
an
expert?
3. If it's not difficult to set up, where can I find documentation on
setting this up?
Thanks for the tip on the software. Just the ACL manager by itself would
probably be worth it.
Mike E.
rob@dekko.com
Sent by: To: Lotus Domino on the
iSeries / AS400 <domino400@midrange.com>
domino400-bounces@mi cc:
drange.com Subject: Re: Trying to
add Admin group to mail files ACL and running
out of time
01/29/03 08:45 AM
Please respond to
Lotus Domino on the
iSeries / AS400
Buy this package:
http://akornn.com/software
Works great, and I believe that it is absolutely essential if you want to
make sure files exist on multiple servers in a cluster environment.
Rob Berendt
--
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
Benjamin Franklin
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