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тАО10-02-2006 04:17 AM
тАО10-02-2006 04:17 AM
He is tasked with a system consolidation where two systems have individual system disks although they are already clustered (both Alphas clustering through their respective network interfaces.
He's considering merging their system disks.
If they weren't clustered already, it'd be relatively simple, but, since they already are, it becomes, ahem, interesting-- to say the least.
Anybody been down this road before and got a list put together or any suggestions or caveats?
Thanks in advance,
WWWebb
Solved! Go to Solution.
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тАО10-02-2006 08:04 AM
тАО10-02-2006 08:04 AM
Re: Merging system disks on two already clustered systems
I ended up taking image of system A disk. Rebooted system A into cluster with SAN disk.
Then added new root for system B and copied all of the autogen details to that directory.
Rebooted system B into the san disk and re-ran autogen. Its like adding system B to the cluster for the first time.
There are probably easier methods but this was the most straight forward way I thought of with minimal downtime.
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тАО10-02-2006 08:52 AM
тАО10-02-2006 08:52 AM
Solutionperhaps not the "easiest" way, as in, requiring the least knowledge, but what I found the "easiest" in service disruption and in amount of work:
firstly: (may/should already have been done): merge SYSUAF, RIGHTSLIST, proxy files ... all other authorisation files.
(if this is an issue, there have been several threads on it already, both here, on COV, and ATW).
Then: backup <>...]*.*. [
Next:
SET FILE /ENTER=[
Shutdown node that has root moved; change BOOTDEF_DEV and BOOT_OSFLAGS to reflect new config; boot.
DONE.
Of course, this assumes that all node specific stuff is in SYS$SPECIFIC (which usually is not a problem, but also, that all cluster-common stuff is LNM├Г┬йd away to a cluster-common non-sd disk (Preferably), OR, is in SYS$COMMON.
On system disks with only ONE node booting from it, the latter condition needs checking: quite often those files "fail over" to SYS$SPECIFIC.
hth
Proost.
Have one on me.
jpe
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тАО10-02-2006 06:14 PM
тАО10-02-2006 06:14 PM
Re: Merging system disks on two already clustered systems
...
wished that was true.
sys$common:[syserr] contains files for all cluster nodes. Copy them too.
Some products install stuff in sys$common:[prodname.nodename] or alike. Check for the nodename in files.
sys$startup contains scripts specific for the node that contain node specific startup (they should be in sys$specific but offen are not).
I would compare all files on the 2 disks and try to understand what to do with each difference.
Wim
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тАО10-03-2006 05:36 AM
тАО10-03-2006 05:36 AM
Re: Merging system disks on two already clustered systems
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тАО10-04-2006 03:46 AM
тАО10-04-2006 03:46 AM
Re: Merging system disks on two already clustered systems
Thanks to all who replied.
WWWebb