[Lustre-discuss] Two file servers question.

[D. Marc Stearman]

At LLNL, we have all the users home directories on NFS servers, and we  
use lustre for scratch space/scientific data.

When a user logs in to any of our clusters they have a normal home  
directory using all the features of a modern day NAS appliance: quotas  
(16-32GB), snapshots, etc, and we back up the users home directory  
data.  The NAS volumes may be tens of terabytes.

The lustre space, which is many petabytes, is organized into scratch  
file systems mounted on all our clusters under /p/lscratch*.

So a user may login to their homedir as /home/user1, and write all of  
their scientific data to /p/lscratcha/user1.  We also do not back up  
our lustre scratch space, rather leave it up to the user to copy  
important data to our HPSS tape archive.

-Marc

----
D. Marc Stearman
Lustre Operations Lead
marc at llnl.gov
925.423.9670
Pager: 1.888.203.0641




On Aug 10, 2010, at 12:19 PM, David Noriega wrote:

> We just got our lustre system online, and as we continue to play with
> it, I need some help supporting my argument that we should have two
> file servers. One nfs server to host up user's home directories and
> then the lustre file server to host up space for their jobs to run. My
> manager's concern is confusing users, which I think for anyone using a
> cluster isn't completely valid, but any information towards technical
> details supporting a two file server solution would be helpful.
>
> Thanks
> David
>
> -- 
> Personally, I liked the university. They gave us money and facilities,
> we didn't have to produce anything! You've never been out of college!
> You don't know what it's like out there! I've worked in the private
> sector. They expect results. -Ray Ghostbusters
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