Networker

[Networker] Migrating data from staging disk to LTO3 tape

2005-09-28 12:04:33
Subject: [Networker] Migrating data from staging disk to LTO3 tape
From: Mark Davis <davism AT UWO DOT CA>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Wed, 28 Sep 2005 12:00:25 -0400
We are looking at upgrading the drives in our tape library to LTO3 technology. My concern is with cloning/migrating data from our staging drives to tape. With our present environment, the throughput rate to our existing LTO2 drives ranges between 10 MB/sec to 20 MB/sec. With the LTO3 drives rated at 60 MB/sec, I am worried we will get into some serious "shoe shining" with the LTO3's, due to our inability to reach the streaming rate. This shoe shining, meaning forcing the tape to continually stop, reverse, and move forward again during recording, would cause significant wear and tear on the media and the drives.

On area where I could see improvement would be to send more than one clone/migration session to a single tape device. Does anyone know if this is possible?

Is anyone presently cloning/migrating staging disk to LTO3 drives, and have there been any issues?

Thanks very much.

Mark Davis
--
Mark Davis
Legato NetWorker Support - I.T.S
University of Western Ontario
email: davism AT uwo DOT ca

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