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04-01-2009 02:16 AM
04-01-2009 02:16 AM
DR build for LINUX
I have backed up the '/' via tar on LIVE;
installed RedHat EL 5 (same as LIVE) on the DR.
Recovered the tape and re-booted.
The LIVE system is connected to an EVA, and now the DR system refused to go past the problem with
/dev/data/backup & /dev/live/live01 - which are the EVA references on my LIVE system.
What is my path forward here ?
Do I need to edit a config file ?
Or should I have setup the EVA before the tape recovery ?
My aim is, if possible, to have a set of straight forward instructions so that an operator could recovery the system onto 'cold iron'
All help, comments appreciated - thanks
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04-01-2009 05:33 AM
04-01-2009 05:33 AM
Re: DR build for LINUX
¿Also, what is the error that you get? Ensure that both servers won't ever access the same VDISK at the same time.
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04-02-2009 01:16 AM
04-02-2009 01:16 AM
Re: DR build for LINUX
I had tried mondo rescue because it seemed ideal but I kept getting errors - the boot cd was not created and I could not work out why.
This was set up as a scripted task to be done each Sunday - which would be our ideal.
So if you can point me at some pretty basic step by step instructions I would be very pleased.
Our current configuration is 2 completely separate systems (Processors and EVA). These, when built, will be in located at least 100 miles apart with the only link being the network up which rsync will transfer data.
So step by step this is what I have done:
On the LIVE system, I have taken a tar copy onto tape of the '/' file system.
On the DR system, which has had RHEL 5 loaded, I un-tar-ed this tape.
On re-booting the system told me that the 2 file systems specified were invalid and it dropped into Rescue mode.
I will attach the log of the tar tape so you can see what it is that is being recovered.
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04-02-2009 04:35 AM
04-02-2009 04:35 AM
Re: DR build for LINUX
I have 2 servers both HP DL380s
The first, runs RHEL 5 and is a 24/7 system
Both machines have 2 internal 180 Gig disk in RAID 0 configuration.
Both have tape devices attached
Can I user tar/DUMP/???? to take a copy from the 1st machine - the LIVE 24/7 system - onto tape, which I can then use on the second machine :-
a - boot this second system with knoppix
b - recover the tape
and have the second machine as an absolute clone of the first.
I can then edit the second machine to change its IP address, and add in the EVA details - because the EVAs are not identical on both systems - and then recover the EVA data from the standard backup tape.
thanks
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04-02-2009 07:03 AM
04-02-2009 07:03 AM
Re: DR build for LINUX
I would suggest the following.
Create a working system in production.
Back it up.
Create a kick start file for building the system in the DR location.
You will need an httpd server for the DR site, same hardware and storage and you can change the IP address on the kick start command line.
SEP
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
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04-03-2009 02:57 AM
04-03-2009 02:57 AM
Re: DR build for LINUX
You don't think I can clone the server - including the Oracle software; my scripts etc ?
I guess I am looking for an 'ignite' for RHEL ;-)
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04-03-2009 06:52 AM
04-03-2009 06:52 AM
Re: DR build for LINUX
NOTE: you only want to backup your local system. You will then need to restore anything else from tape.
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04-03-2009 07:03 AM
04-03-2009 07:03 AM
Re: DR build for LINUX
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04-08-2009 03:00 AM
04-08-2009 03:00 AM
Re: DR build for LINUX
The problems I get relate to the Volume groups for the Raid 0 internal disks.
I have now rebuilt the server to O/S level, and will try the mondo again - but will post problems on the appropriate mondo forum.
Again thanks
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05-20-2009 12:50 AM
05-20-2009 12:50 AM
Re: DR build for LINUX
Thanks