[Samba] Building two redundant servers without clustering

["M. Müller"]

Thanks for your helpfull comments Mitch and Fred!
As I was already pushed a bit towards drdb I did a bit searching and 
found that drdb seems not to slow down things too much (I belive it was 
about 30% for writing). I am absolutely new to Network RAID and 
clustering and have a timeframe of about 40 days. As I don't want to 
make it an adventure I will start simple and use drdb and leave out 
heartbeat and other HA-stuff for now.
Rsync seems to be possible but not quite the right tool.

With kind regards,
Malte Mueller

Greg Freemyer schrieb:

>On Mon, 28 Feb 2005 07:57:13 -0800, Mitch (WebCob) wrote:
>  
>
>>Hi M
>>
>>    
>>
>>>1.: Use drdb to build a RAID1 across the two host's filesystems. If  one
>>>host fails, the RAID runs in degraded mode but it runs - or does it
>>>crawl anyway because drdb is slow?
>>>      
>>>
>>[Mitch says:] I've never used this, and a quick google doesn't give me
>>anything useful - what's the home page?
>>
>>    
>>
>They have their website hidden at http://www.drbd.org/    ;-)
>
>But if you want to build a failover cluster with drbd as the
>underlying network RAID1 layer, you will also want to look into
>Linux-HA.  Linux-HA provides the heartbeat / failover logic typically
>used to manage drbd.
>
>http://www.linux-ha.org
>
>FYI: I don't think Redhat supports any of the above.  (They have
>alternate solutions they prefer.)  SUSE OTOH does support both
>Linux-HA and drbd on there distro.  In particular with their SLES
>server releases linux-ha/drbd is the recommended HA cluster solution
>and they provide break/fix support.
>
>Since drbd requires kernel patches, I would definately look into a
>distro that has those built-in.
>
>The linux-ha project is funded / sponsored by IBM and SUSE and has
>thousands of production installs.
>
>FYI2: I don't know if SUSE SLES officially supports linux-ha/drbd/samba or not.
>
>Greg
>  
>