Upgrade &; P2V from 8.5 to 9 +: upgrade then P2V or vice versa?
Hello
We seek to improve our servers of Unified Communications and applications (CUCM, CUC, UCCX) version 8.x, and then virtualize on the new virtual machine environment.
The CUC of CUCM & resident currently on a SAM 7825i4 and UCCX on a 7835I3 MCS.
All are running 8.0 (2) - a customer is running 8.5 (we also seek to do the same for them).
Question - what are your opinions about the best to carry out the work?
Do you recommend for...
- first upgrade to version 8.x for 9 + in place (on the existing hardware - which I confirmed has the minimum requirements to run 9 +), and then to perform the P2V (Physical to Virtual) not after the upgrade?
- Or do you recommend doing the P2V first, followed by the upgrade from 8.x to 9 + on the new VM?
I was leaning towards option 1.
Whoever did this and in what order you do it? All the problems you are having? Any advice you can offer to avoid these issues or to speed up the process would be too large.
Also in what concerns installation on partition and perform then the 'switch' - allowing the roller to 8.x if necessary - do you know if is the same for the upgrade to 9 + -? Or 9 + managing things differently?
Any help will be greatly appreciated.
See you soon,.
Brett
Hi Brett
As I do these uppgrades that always seems to work for me.
- Install a virtual CUCM Editor to the exact version as well as your current editor with the same hostname and IP address (but place it in a network of isolation). Install any additional firmware, settings etc on the new Pub regional.
- DRS backup physical restoration of PUB and DRS to the virtual.
- After the restoration, check the DB to ensure that everything looks good.
- Pass virtual advertising in your target version.
- After the upgrade, rehost / change the license to the new server.
- Add / install any subscriber you need.
Cutover would be simple:
1. unplug the physical pub / subs from the network.
2. change the NIC virtual VMware to be in the production network
Restoration is the same in the opposite direction.
I try not to change the physical Pub at all during upgrades because it makes the failover / easier restore.
Regarding the other question on partitions, Yes, the things active / inactive still applies, however an upgrade of 8.5 (or more) to 8.6 (or higher) is an improvement of "Refresh" which takes MUCH more time - at least 2-3 hours per server. This is another reason why I create and update all under VMware, when new servers are not in production. Also note that, depending on your server hardware (including some models of MCS 7825), a conversion of equipment based on software based RAID is performed when you go to 8.6. This stops you being able to roll back without a complete reinstall.
HTH
Barry Hesk
Intrinsic network solutions
Tags: Cisco Support
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