Networker

Re: [Networker] tape utilization

2008-03-27 16:36:04
Subject: Re: [Networker] tape utilization
From: A Darren Dunham <ddunham AT TAOS DOT COM>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Thu, 27 Mar 2008 20:28:56 +0000
On Thu, Mar 27, 2008 at 02:48:17PM -0500, Eugene Vilensky wrote:
> Thank you for your reply David. I am speaking more towards making sure
> that the tape isn't running ahead when there are drops in the data
> stream.  I understand LTO-3 are variable speed, but not continuously
> variable, and there can be gaps which are marked as "used" but do not
> have any data on them.  Please correct me where I am wrong. 

I've never seen any documentation that suggests it will skip tape.
Instead it has a buffer to help span the distance between speeds, and it
can fall back to stopping the tape if insufficient data is present.

> bring to mind another newbie-ish question, what are the minimum speeds
> and speed-steppings?

I've been told 30MB/s on LTO-3, but I do not have a datasheet with that
information.

-- 
Darren Dunham                                           ddunham AT taos DOT com
Senior Technical Consultant         TAOS            http://www.taos.com/
Got some Dr Pepper?                           San Francisco, CA bay area
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