[DRBD-user] drbd or rsync?

Adam Gandelman gandelman.a at gmail.com
Wed Apr 8 11:19:04 CEST 2009

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


After the initial data sync between nodes, bandwidth is used only as 
needed and latency can be mitigated using DRBD Proxy. If your systems 
are stable and have a reliable replication link between two (or three) 
nodes, it will run and run and replicate and replicate until something 
goes wrong that is unrelated to DRBD. The chance of this happening on 
the weekend is somewhere around 28%. 

Sally-Anne Edwards wrote:
>> However, how would this compare to using rsync?  Which will be more
>> efficient and safer?
>>     
>
>
>
> No responses so far it seems...
>
> This thread is the top response in Google:
>
> http://forums.novell.com/novell-product-support-forums/suse-linux-enterprise-server-sles/sles-configure-administer/368438-rsync-vs-drbd.html
>
> The second response gives the conclusion `At some point drdb will
> leave you working a very long weekend' - is it really that far from
> production quality?
>
> I don't have a team of UNIX engineers to support it 24x7 - I want
> something that just runs, and doesn't disrupt my weekends.  If the
> data centre blows up on the weekend, I just want to know that the data
> is safely stored elsewhere.  The risk of downtime is manageable and HA
> is not strictly required.
>
> Is drbd something that needs to be constantly watched and maintained,
> or will it just run by itself?
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>   




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