Does the block level backup require a volume shutdown or dismount?  

-----Original Message-----
From: Riaan Louwrens [mailto:riaanl AT SOURCECONSULTING.CO DOT ZA] 
Sent: Monday, April 26, 2004 8:28 AM
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Subject: Re: [Networker] Large File system issues


HI,

A resolution that I have implemented a couple of time nows is to do RAW
filessystem backup (yes you can do this on windows as well).

Essentially by specifying the \\.\X name of the drive. This will then do
a block level backup of all the data at raw disk speed - normally very
fast. This is always a FULL backup of the WHOLE disk. So you would want
to keep your disk / partition size a close to the size of the actual
amount of data (if possible) - perhaps create a dynamic disk that you
can grow if necessary.

Typical example - we had a client that had 8GB of files numbering on a
10GB partition numbering close to 2 million and it took almost 2 days to
backup to a DLT7000. Doing a RAW backup this was done in under an hour
... (10GB streamend to tape). Our client now does a FULL backup every
night - which he automatically restores to another machine (same night)
- just in case he might need to do file level recoveries. (see below).

Some restrictions though - as it is block level you cannot do file level
recoveries. (But if you only have 20 odd GB of data this shouldnt be an
issue - not sure what oen would do when you talk 100's of GB's).

It "HAS" to be recovered to the same drive letter - so if you a directed
recovery you have to have a drive with the same drive letter (be it C,
D, E ... etc).

Hope this helps!

Regards,
Riaan

-----Original Message-----
From: Tarjei T. Jensen [mailto:tarjei.jensen AT AKERKVAERNER DOT COM]
Sent: Monday, April 26, 2004 7:32 AM
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Subject: Re: [Networker] Large File system issues


"atif" wrote:
>Are there any issues anyone can think of that I should consider? Also, 
>we might be able to survive with 80GB fs. Any thoughts on that? Thanks.

We have used 300GB file systems with Windows 2000, but have decided
against them because they take too long to back up and even longer to
restore. I'm not sure what size is favoured now.

Smaller filesystems means the server can be backed up faster since each
filesystem is backed up seperately.


greetings,

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