Veritas-bu

[Veritas-bu] NDMP with EMC Clariion

2007-04-25 13:45:16
Subject: [Veritas-bu] NDMP with EMC Clariion
From: pkeating at bank-banque-canada.ca (Paul Keating)
Date: Wed, 25 Apr 2007 13:45:16 -0400

-- 


So let me get this right...

You can pull 3 streams of file level CIFS data over GigE faster than
your filer can write to tape over fiber HBA?
I suppose I could if nothing else was running, but sending the Filer to
tape using NDMP means my network IO is free to pull in data from Network
attached clients.

Not to mention eliminating contention with clients for bandwidth on my
filer's VIFs.

Paul

> -----Original Message-----
> From: veritas-bu-bounces at mailman.eng.auburn.edu 
> [mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf 
> Of Spearman, David
> Sent: April 25, 2007 7:29 AM
> To: Preston, Douglas L; Veritas-bu at mailman.eng.auburn.edu
> Subject: Re: [Veritas-bu] NDMP with EMC Clariion
> 
> 
> Douglas,
> 
> For what it's worth. We do NDMP with virtual cif servers on an emc
> celerra (clariion disk space of course). Does the throughput increase?
> Yes and no. Sure, it shoots the data down the line faster however NDMP
> is a single threaded job. One NDMP job, one tape unit. In truth I can
> multiplex data across the wire and get three jobs going to 
> one tape unit
> with just about the same speed. We have no choice since the 
> Centerra is
> ndmp only. 
> 
> David Spearman
> County of Henrico, Va.
> 
====================================================================================

La version fran?aise suit le texte anglais.

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