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Thanks for help<BR>
<BR>
>Are you facing latency issues? Whats the RTT on this link?<BR>
>You should perform this test:<BR>
> <A HREF="http://www.drbd.org/users-guide/s-measure-latency.html">http://www.drbd.org/users-guide/s-measure-latency.html</A><BR>
><BR>
I'll let you know just after a planned downtime tomorrow<BR>
<BR>
>If you are bandwidth-limited, you will need DRBD proxy.<BR>
><BR>
may I use protocol A and DRBD proxy at the same time ?<BR>
and for DRBD proxy may I need to contact Linbit sales first ?<BR>
<BR>
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--<BR>
Regards,<BR>
Muhammad Sharfuddin | NDS Technologies Pvt Ltd | cell: +92-333-2144823 | UAN: +92-21-111-111-142 ext: 113<BR>
<BR>
Micro$oft had developed .NET trading platform for the London Stock Exchange(LSE), claiming that it provided "five nines" reliability.<BR>
After suffering extended downtime and unreliability the LSE announced in 2009 that it was planning to drop its <BR>
Micro$oft solution and switch to a Linux based one in 2010<FONT SIZE="2">.</FONT><BR>
<BR>
Your Linux is Ready<BR>
<A HREF="http://www.novell.com/linux/">http://www.novell.com/linux</A> <BR>
<BR>
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On Mon, 2011-01-31 at 09:19 +0100, Felix Frank wrote:
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On 01/31/2011 07:12 AM, Muhammad Sharfuddin wrote:
> OS: SLES11 SP1 x86
> SLE HAE 11 SP1
> DRBD version: 8.3.7
> /dev/drbd0 is an oracle file system(/opt/oracle)
>
> We are having serious performance issues when using DRBD over a very
> slow but a very reliable WAN link(2.5 Mbps).
> As of now we are using Protocol C, and now we are considering to use
> Protocol A.
>
> Anyone please suggest/recommend/comments
Are you facing latency issues? Whats the RTT on this link?
You should perform this test:
<A HREF="http://www.drbd.org/users-guide/s-measure-latency.html">http://www.drbd.org/users-guide/s-measure-latency.html</A>
and compare the result to disconnected operation.
If you measure a large difference, protocol A can probably help your issues.
If you are bandwidth-limited, you will need DRBD proxy.
Cheers,
Felix
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