[prev in list] [next in list] [prev in thread] [next in thread] 

List:       ceph-devel
Subject:    Re: how to install a cloud storage network :which is best smart automatic  file replication solution
From:       Martin Fick <mogulguy () yahoo ! com>
Date:       2010-05-27 19:31:03
Message-ID: 13316.5620.qm () web36102 ! mail ! mud ! yahoo ! com
[Download RAW message or body]

--- On Thu, 5/27/10, Metin Akyalı <metin.akyali@gmail.com> wrote:

> I would use 1gbit client servers and 100mbit storage
> servers. All the servers will be in same DC. I will 
> rent the servers and i dont own my own DC house. Reason 
> i am choosing 1gbit server as the client is i
> wont have too much 1gbit server, but i will have many
> stogage nodes, and 1gbit server is very expensive but 
> 100mbit is not so.

It sounds like you may not really need replication 
if all the files have to pass through the "client".  
Simply add a caching layer to the client, I suspect 
that most FSes can do that.  I know that glusterfs
 certainly can, they have a caching translator.  
But, even plain old NFS should likely cache enough 
on the client side if it is a read only load.
If not, AFS does provide some read only specific 
replication, but I think that you have to specify 
which files to replicate.  From what I understand 
the ceph clients will also cache data locally with a 
read only load.

Additionally, both ceph and glusterfs (at least) will 
stripe files across multiple storage nodes, so even
without replication they should be able to serve up
a single file at a higher bandwidth than the 
connection to one single node.  I am not sure that
replication really is the solution you seek.

My $.02,

-Martin



      
--
To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
[prev in list] [next in list] [prev in thread] [next in thread]