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06-28-2012 12:02 PM
We are planning to migrate our Cell Manager from HP (SO and HW) to Linux.
I would like to get some advise, recomendation and suggestion to do it in order to do it smoothly.
07-04-2012 04:39 PM
It's pretty straightforward.
Was the performance OK on your old server? If it was, then all you need to do is make sure that you've got at least as much memory in your new Linux box as you had in your old HP-UX server, or preferably a bit more because x86 memory is -- ahem -- cheap as chips. Any CPU in a new ProLiant should be a match for an Itanium CPU. The disk I/O speed is not particularly different between the two platforms.
Do you want to do a big-bang cut-over? (One day you're on HP-UX, the next day you're on Linux.) The end-ian-ness is different, so you can't just copy the IDB data across. You'll have to do omnidbutil -writeascii on HP-UX and then omnidbutil -readascii on the Linux box. I think (but would have to double check) that you can writeascii on 6.11 and readascii on 7.0. Remember to keep the same hostname on the Linux box.
Do you want something gentler? Install Manager-of-managers on your Linux box. You will have a 60-day evaluation license, but even paying for a MoM license on Linux is only in the low thousands (list price). Centralise the MMDB. Take each client one-by-one each night and migrate it across to the new cell. (You have to move the backup specification files across manually, though.) Eventually you will have nothing left in the old cell.
You will end up with a license-to-use HP-UX cell manager which you don't need, but will be paying annual support for. Talk to HP about downgrading to the Windows/Linux cell manager license.
08-08-2012 09:09 AM
Thank you Greg for your reply.
Let me try to explain the situation a bit more.
We are not migrating from HPUX to Linux because performance issue. We are moving because company decision.
You are right. The idea is to do a bing-bang cut-over. But we are planning to move between both machines using the same version of DataProtector (in this case 6.2).
We are not planning to move forward about version. By the way, I am planning to do a lab apply this procedure and to check we will not lose any important data and to do it faster the second time, in productive server.
Is there any issue in this plan? Please could you provide the complete command to run it? or Is there any cookbook from HP to do it in the recommended way?
Our plan is to install a clean Cell Manager in Linux environment.
After that, exporting IDB from HP and import in Linux. At the end try to run a successfull backup from Linux Cell Manager
My boss will work with HP about licences and all those things.
Thank you for your time and dedication