2012/1/27 Kevin Keane (subscriptions) <subscription AT kkeane DOT com>:
> A VSS backup and system state are *not* equivalent. In my mind, trying to
> back up Windows with plain VSS snapshots is not much better than not having
> any backups.
>
>
>
> Conceptually, the system state backup is two things: a predefined file set,
> and a mechanism to do snapshot it. But that's only the top of the ice berg;
> the devil is in the detail.
>
>
>
> First of all, VSS applies only to one drive. The system state can extend
> over several drives (most commonly if you chose to follow Microsoft's
> recommendations and put the log files for the various database on a
> different physical drive from the database itself).
>
>
>
> Second, there is no guarantee that restoring Windows in bits and pieces will
> work. When restoring the registry, you may end up with something that
> doesn't match any Windows updates made since the backup was taken.
> Basically, if you do a VSS snapshot to back up those things, you are
> manually redoing what Microsoft already did for you, and then you hope that
> you selected the right files so that a restore will later work. Sometimes it
> does, sometimes it doesn't
>
>
>
> And in any case - how are you going to restore just the registry? You can't
> do it from within Windows, because the files are always in use. So you have
> to use something like BartPE. What about file permissions for the registry
> files? The system state does allof that for you.
>
>
>
> Active Directory is special even within the system state. You can restore it
> in three different ways:
>
>
>
> - Simply restoring the system state. That is usually recommended. It will
> give you a non-authoritative version of AD. It is joined to the domain, but
> the data is not accurate. It will then try and replicate the data from other
> domain controllers. The end result is that AD is completely up to date with
> the latest changes.
>
>
>
> - Restoring the system state in directory restore mode. That will give you
> an authoritative version of AD. This will roll back AD to the time of the
> backup. Only do it if you don't have other AD controllers to replicate data
> from.
>
>
>
> - demote the DC, remove it from the domain, rejoin and then re-promote it.
> This is necessary if you had to seize any of the FSMO roles onto another AD
> controller.
>
>
>
> - rebuild the domain from scratch.
>
>
>
> -----Original message-----
>
>
> From: Simone Caronni <negativo17 AT gmail DOT com>
> Sent: Wed 25-01-2012 07:38
> Subject: Re: [Bacula-users] Windows File Daemon: "VSS" or "System State" or
> both ?
> To: bacula-users <bacula-users AT lists.sourceforge DOT net>;
> Hello,
>
> I used to do one of the following depending on whether is Windows 2003
> or 2008+ to have some additional protection:
>
> ClientRunBeforeJob = "start /w ntbackup backup systemstate /F
> C:\\SystemState.bkf"
> ClientRunAfterJob = "del C:\\SystemState.bkf"
>
> ClientRunBeforeJob = "start /w wbadmin start systemstatebackup
> -backuptarget:D: -quiet"
> ClientRunAfterJob = "rmdir /s /q D:\\WindowsImageBackup"
>
> But if you run with VSS enabled you're able to back up also registry
> and open files, so unless you have a strict requirement to restore
> only a part of the "System State" I suggest you to use only VSS.
>
> I made many restore of complete Windows systems with BartPE and the
> bacula plugin. The only thing you will see is "shutdown unexpected"
> when you reboot the restored system.
>
> >From my experiences, Active Directory domain controllers are a LOT
> easier and faster to be replicated from another instance than to be
> restored from scratch.
>
> Regards,
> --Simone
>
>
>
> On 25 January 2012 11:48, Hugo Letemplier <hugo.let.35 AT gmail DOT com>
> wrote:
>> Hello,
>>
>> I am backing up Windows servers.
>>
>> I have a doubt on my file set. I run backups with VSS enabled and I
>> run NTBackup to make a dump of the System State.
>>
>> This is recommended on the Bacula documentation but with both the VSS
>> enabled and the NTBackup System state backup, have we got a redundancy
>> of information ?
>>
>> Thank you
>>
>> Hugo
>>
>>
>> ------------------------------------------------------------------------------
>> Keep Your Developer Skills Current with LearnDevNow!
>> The most comprehensive online learning library for Microsoft developers
>> is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3,
>> Metro Style Apps, more. Free future releases when you subscribe now!
>> http://p.sf.net/sfu/learndevnow-d2d
>> _______________________________________________
>> Bacula-users mailing list
>> Bacula-users AT lists.sourceforge DOT net
>> https://lists.sourceforge.net/lists/listinfo/bacula-users
>
>
>
> --
> You cannot discover new oceans unless you have the courage to lose
> sight of the shore (R. W. Emerson).
>
> ------------------------------------------------------------------------------
> Keep Your Developer Skills Current with LearnDevNow!
> The most comprehensive online learning library for Microsoft developers
> is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3,
> Metro Style Apps, more. Free future releases when you subscribe now!
> http://p.sf.net/sfu/learndevnow-d2d
> _______________________________________________
> Bacula-users mailing list
> Bacula-users AT lists.sourceforge DOT net
> https://lists.sourceforge.net/lists/listinfo/bacula-users
>
>
> ------------------------------------------------------------------------------
> Try before you buy = See our experts in action!
> The most comprehensive online learning library for Microsoft developers
> is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3,
> Metro Style Apps, more. Free future releases when you subscribe now!
> http://p.sf.net/sfu/learndevnow-dev2
> _______________________________________________
> Bacula-users mailing list
> Bacula-users AT lists.sourceforge DOT net
> https://lists.sourceforge.net/lists/listinfo/bacula-users
>
Ok, so I will keep the NTbackup system state
Thanks
------------------------------------------------------------------------------
Keep Your Developer Skills Current with LearnDevNow!
The most comprehensive online learning library for Microsoft developers
is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3,
Metro Style Apps, more. Free future releases when you subscribe now!
http://p.sf.net/sfu/learndevnow-d2d
_______________________________________________
Bacula-users mailing list
Bacula-users AT lists.sourceforge DOT net
https://lists.sourceforge.net/lists/listinfo/bacula-users
|
