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  3. November 2012

RE: Backing up guest partitions

You can bring the Hosting partition down to restricted state, and the guest partitions will continue to run.

You can't backup the storage spaces while the partition is active.

I have found that backing up the storage space on the hosting partition, is faster than doing the go save 21 on the hosted (client) partition. Remember, your restore will be the inverse of your backup. So, if you save the storage spaces, you would have to restore the storage spaces to recover. If you do a SAVE 21 on the client, then you can use that Save to restore to any single machine, a real partition, or a virtual partition (that has been defined on a host).

Pete

--
Pete Massiello
iTech Solutions
http://www.itechsol.com
http://www.iInTheCloud.com





-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Evan Harris
Sent: Tuesday, November 27, 2012 1:22 PM
To: Midrange Systems Technical Discussion
Subject: Re: Backing up guest partitions

Hi Pete

If I exclude /QPFNWSSTG from the 21 (which is how I am leaning in at least one case) do you happen to know if the guest continues to run during a save if I don;t end the servers ?

Do you have any comparisons between backing up and restoring storage spaces and saving restoring from a full system save ?

Also, when restoring the /QPFNWSSTG files into the IFS what else do I need to restore. I am presuming the NWSD and Storage Space Objects have to be recreated and or restored and linked somehow. What process do you follow to do that, or does restoring the IFS objects handle the storage space part for you ?

On Tue, Nov 27, 2012 at 12:40 PM, Pete Massiello - ML <pmassiello-ml@xxxxxxxxxxxx> wrote:
Evan,

I would exclude the /QPFNWSSTG from the SAVE 21 of the Hosting partition, because of time. Then you can bring the host and everything backup on the Hosting partition. Plus all the clients. Then, I would bring down each hosted (Client) partition, and backup their network storage spaces /QPFNWSSTG/client-storage-spaces. When done, you bring up the partition, and move to the next one. This will reduce downtime for everyone, but still insure you have the pieces to put a system back together.

Pete

--
Pete Massiello
iTech Solutions
http://www.itechsol.com
http://www.iInTheCloud.com




-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Evan Harris
Sent: Monday, November 26, 2012 12:34 PM
To: Midrange Systems Technical Discussion
Subject: Backing up guest partitions

Hi All

I have been considering the various options for backing up guest partitions and wondered what other people do.

In my case I am considering backing up the individual hosted
partitions using a quarterly option 21 and a backup strategy tailored
to the use of each guest. I further plan to back up the host
periodically, or as the host changes to capture the full system
configuration. My current thinking is to have a full outage every 6
months. On one backup I will back up up everything, guest storage
(/QPFNWSSTG) included. On the other backup I am thinking of simply backing up the host and the server descriptions but excluding the /QPFNWSSTG directory to save time; I am still thinking this through. I am trying to get to a situation where I can recover a system either with the hosts intact, or with the hosts to be recovered separately or not at all.

In the instance where I backup up the guests with individual backup regimes I am trying to get a balance between preserving the guest configuration on the host but at the same time avoiding having to save and restore the network storage spaces when I will (potentially) be overwriting the bulk of the storage during the guest recovery process.

While considering this I also wondered if while doing a full system save the guest would remain operational if I took the option not to end all servers. I'm not in a position to easily test this so I wondered if they could remain operational. I'm starting to to think this might be OK.

So what do others do ? What strategies do you have for backing up hosting and hosted and hosted partitions ? What recover plans are your backup strategies supporting ?

--

Regards
Evan Harris
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