[DRBD-user] DRBD & Infiniband

Felix Frank ff at mpexnet.de
Wed Jan 30 11:28:22 CET 2013


Hi,

you may want to look at SDP:
http://www.drbd.org/users-guide/s-replication-transports.html

Sebastian: The "drbd isn't really that great" notion, albeit
interesting, strikes me as a little off topic.

Cheers,
Felix

On 01/30/2013 10:24 AM, Sebastian Riemer wrote:
> On 29.01.2013 22:32, Steve wrote:
>>
>>   Hello!
>>
>>   I am contemplating a project with a pair of machines with 36 drives
>> each, with DRBD.  I have used DRBD with Ethernet products quite
>> successfully before, but in the interest of performance, I am
>> considering using Infiniband on this project.
>>
>>   I know that I can simply configure IPoIB and run DRBD over that, but I
>> would imagine that there is a more efficient way of doing things.  If
>> anyone could point me to tips, texts, links, or other documentation on
>> efficient use of Infiniband for this purpose, I would greatly appreciate
>> it.
> 
> Yes, there is a better way: Use MD RAID-1 and SRP/iSER. If you need
> remote storage anyway, this is the best solution as you've got two
> parallel network connections. Even with local storage and remote to
> another system this is better than DRBD.
> 
> IPoIB always has performance and stability issues. Therefore, I even
> suggest using SRP instead of iSER. Also Fusion-io goes for SCST and SRP.
> 
> I'm planning to talk about RDMA for storage and SRP vs. iSER on LinuxTag
> 2013 in Berlin/Germany.
> 
> Cheers,
> Sebastian
> 



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