Q about storage architecture

[Sirisha Akkala <ak...@Colorado.edu>]

Hi
I would like to know if Hadoop architecture more resembles SAN or NAS? -I'm guessing it is NAS.
Or does it fall under a totally different category? If so, can you please email brief information?

thanks,sirisha.

Re: Q about storage architecture

[Steve Loughran <st...@apache.org>]

Bryan Duxbury wrote:
> If you are considering using it as a conventional filesystem from a few 
> clients, then it most resembles NAS. However, I don't think it makes 
> sense to try and classify it as SAN or NAS. HDFS is a distributed 
> filesystem designed to be consumed in a massively distributed fashion, 
> so it does fall into its own category.

"datacentre scale distributed file system with location awareness"
-single datacentre only; not directly for long haul use, though its 
sub-posix semantics map well to DAV and other long-haul front ends
-the location of data is not hidden from the job managers that want to 
run work near the job.

I'd compare with GFS and Amazon S3 rather than NAS/SAN systems, which 
are normally trying to hide the fact there is networked storage underneath

-steve

Re: Q about storage architecture

[Bryan Duxbury <br...@rapleaf.com>]

If you are considering using it as a conventional filesystem from a  
few clients, then it most resembles NAS. However, I don't think it  
makes sense to try and classify it as SAN or NAS. HDFS is a  
distributed filesystem designed to be consumed in a massively  
distributed fashion, so it does fall into its own category.

-Bryan

On Dec 6, 2008, at 9:06 PM, Sirisha Akkala wrote:

> Hi
> I would like to know if Hadoop architecture more resembles SAN or  
> NAS? -I'm guessing it is NAS.
> Or does it fall under a totally different category? If so, can you  
> please email brief information?
>
> thanks,sirisha.

Re: Q about storage architecture

[Sagar Naik <sn...@attributor.com>]

http://hadoop.apache.org/core/docs/r0.18.2/hdfs_design.html

Sirisha Akkala wrote:
> Hi
> I would like to know if Hadoop architecture more resembles SAN or NAS? -I'm guessing it is NAS.
> Or does it fall under a totally different category? If so, can you please email brief information?
>
> thanks,sirisha.
>