Re: Filer Impressions, please.

From: Todd C. Merrill (tmerrill@mathworks.com)
Date: Mon Jun 07 1999 - 11:46:00 EDT


On Thu, 3 Jun 1999, Nathan O. Siemers wrote:

> I have joined this list because I am considering a purchase of
> either (~ 1/2 tB) :
>
> 1. A Netapp 760 Filer.
[...]
> to serve as common, high performance, *shared* file space for
> two Origin2000 servers. I imagine a dedicated high speed
> network between the toaster and the two origins will be put in
> place if we go with the netapp type solution. I would
> appreciate your frank comments on the Filer's performance and
> reliability.

        Watch for this option if you benchmark a NetApp.

This is from the ONTAP 5.2.1
documentation on CD. It appears to be a hidden option; that's why I
didn't see it when we viewed the output of the `options` command.

5_2_1/doc/html/sag/stats7.htm

Improving filer performance
[...]
Improving performance on directory lookups

Turning the nfs.big_endianize_fileid option On improves performance on
directory lookups for clients that use the file ID in the file handle
as a hash key in certain ways. Enable this option if your NFS clients
are mainly running HP-UX or IRIX.

Note: If you turn the big_endianize_fileid option On, all NFS clients
that have mounted directories from the filer must unmount and remount
them; otherwise, they get "stale file handle" errors on all references
to files already opened on the filer until they
unmount and remount all directories.

        Until next time...

Todd C. Merrill
The Mathworks, Inc. 508-647-7792
24 Prime Park Way, Natick, MA 01760-1500 508-647-7012 FAX
tmerrill@mathworks.com http://www.mathworks.com

---

Until next time...

Todd C. Merrill The Mathworks, Inc. 508-647-7792 24 Prime Park Way, Natick, MA 01760-1500 508-647-7012 FAX tmerrill@mathworks.com http://www.mathworks.com ---



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