[Lustre-discuss] Help needed for an upcoming HPC project

[Andreas Dilger]

On Oct 21, 2007  20:49 +0300, Mertol Ozyoney wrote:
> .         I know that some installiations have used Sun thumper X4500's ,
> I'd like to learn pro's of cons of using Sun X4500's 

Pros: will be a good platform for ZFS, and is also very good with Linux
software RAID 5 + Lustre (used at existing sites).

Cons: no multi-port access to disks prevents failover

> .         If I use X4500 how can I provide redundancy ? What happens if a
> node fails and how can I restore the node ?

There is currently no Lustre-level redundancy.  The Server Network Striping
feature will replicate data at the Lustre OST level, but this will not be
available for some time.

> .         What are the supported backup applications ? (Veritas, legato
> etc..) Can we use incremantal backups on lustre ?

You can use any filesystem-level backup tool that runs on the clients.

I'm not sure what you mean by being able to do incremental backups, as
I'd expect that to be a function of the backup tool?

Cheers, Andreas
--
Andreas Dilger
Sr. Software Engineer, Lustre Group
Sun Microsystems of Canada, Inc.