Best plan for this scenario (migrate oes2 to oes11)

Hi there!
I would like to ask you guys the best plan for migrate a few servers that I have
in oes2 to oes11.
I have four servers in oes2sp2/sp3, these servers have a few NSS
volumes over NCS. Also I have my iPrint service on two machines,
also using NCS. I have one cluster between two machines and
other cluster between the other two machines. For exmaple,
machine1 and machine2, three NSS volumes (every NSS volume is a cluster
resource) and other resource in the same cluster for iPrint. Cluster: CL1
machine3 and machine4, one NSS volume (for other people in the company)
in other cluster. Cluster: CL2. In this cluster only have a NSS volume/resource.
Machine1/3 are physical, machine2/4 are virtual (vmware)
My CA is in other server that I will migrate after a while. So, It seems that there is
no problem with the certificate. Machine1 and machine3 are a replica for the eDir in
my organization.
My plan: I have deployed two virtual machines and one physical with oes11sp1 and sles11sp2.
I think that the best plan is migrate with migration tool iPrint first, like a cluster resource,
and NSS volumes, and after that, make a transfer ID (like a different project)
For machine1/3, move NSS volumes and after, make a transfer ID.
Is this correct? I dont know If I have to delete the current clusters (cl1 and cl2) and
create new ones, after that, create every resource as It was on the old ones.
thank you so much !
Antonio.

Originally Posted by kjhurni
This is just my opinion, of course, but:
If you don't want to have to migrate your NSS data and keep the same server names/IP/s and cluster load scripts, then I believe a Rolling Cluster Upgrade is a good way to go.
If you look in my signature, there's a link to my OES2 guides. Somewhere there is one that I did for our Rolling Cluster Upgrade.
If all you have is NSS and iPrint, then you only need to use the miggui (migration utility) for iPrint--or so I think (I do have to followup on this one as I vaguely recall I asked this a while back and there may have been a way to do this without migrating stuff again).
But your NSS data will simply "re-mount" on the OES11 nodes and you'll be fine (so that's why I like the rolling cluster upgrades).
Let me double-check on the OES2 -> OES11 cluster option with iPrint.
--Kevin
Thank you Kevin for your answer.
Finally, I think Im going to proceed using transfer ID on my servers that Im only using NSS over NCS (I only have two machines with one NSS volume)
because it seems that its a good option. I would like to keep old IPs from all the servers, cluster and resources if possible. So, testing this
migration on my test environment it seems that it works fine:
- I use miggui for transfer id between all the machines: physical -> physical and virtual -> virtual. eDirectory assumes new hostname, IP, etc.
the only task "out of the box" is that I have to delete the cluster and regenerate (reconfigure NCS on the new servers) but its pretty easy. This way
I have the two old ips from the older machines and all the ips from the cluster and the cluster resources also. I think that its the best plan.
For the other two machines that has 4 nss volumes and iPrint I must think about a plan. But with those, Im going to proceed this way. I hope
I have chosen a good plan!
thank you so much all for your answers / advices

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Originally Posted by kjhurni
This is just my opinion, of course, but:
If you don't want to have to migrate your NSS data and keep the same server names/IP/s and cluster load scripts, then I believe a Rolling Cluster Upgrade is a good way to go.
If you look in my signature, there's a link to my OES2 guides. Somewhere there is one that I did for our Rolling Cluster Upgrade.
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Thank you Kevin for your answer.
Finally, I think Im going to proceed using transfer ID on my servers that Im only using NSS over NCS (I only have two machines with one NSS volume)
because it seems that its a good option. I would like to keep old IPs from all the servers, cluster and resources if possible. So, testing this
migration on my test environment it seems that it works fine:
- I use miggui for transfer id between all the machines: physical -> physical and virtual -> virtual. eDirectory assumes new hostname, IP, etc.
the only task "out of the box" is that I have to delete the cluster and regenerate (reconfigure NCS on the new servers) but its pretty easy. This way
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