Networker

Re: [Networker] Slow Clone speed

2003-07-14 11:11:32
Subject: Re: [Networker] Slow Clone speed
From: Terry Lemons <lemons_terry AT EMC DOT COM>
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Date: Mon, 14 Jul 2003 11:10:46 -0400
Hi Bruno

You'll find messages on this subject in the archive of this mailing list; it
might be useful to read these, too.

But, in short, clone speed is affected by the number of simultaneous backups
sessions that were written to the source tape of the clone operation.  If
many simultaneous backups were written to the source tape, then NetWorker
will have to read-and-skip-and-read-and-skip through the tape, instead of
just reading one long on-tape session.

You may want to examine and, possibly, lower the 'target sessions' value for
your tape drives.

Hope this helps.
tl

Terry Lemons
CLARiiON Applications Integration Engineering
        EMC²            
where information lives

4400 Computer Drive, MS D239
Westboro MA 01580
Phone: 508 898 7312
Email: Lemons_Terry AT emc DOT com



-----Original Message-----
From: Bruno Madeira [mailto:bmadeira AT TOTALSTOR DOT COM]
Sent: Monday, July 14, 2003 10:38 AM
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Subject: [Networker] Slow Clone speed


Hi NetWorkers,

I have a problem with cloning. During the normal backup, file systems,
databases, etc, the speedis 10-16 MB/s with SDLT220. When i start the
cloning, it goes to speeds bellow 1 MB/s. Any help?


Best regards,

Bruno Madeira

___________________________________________________
TotalStor, Soluções de Armazenamento de Dados, S.A.
Grupo IPM
Bruno Madeira

Est. de Alfragide, Lote 107 - Ed. Mirante
2720-018 Amadora PORTUGAL
Phone : +351 214 724 090
Fax     : +352 214 724 099
mailto: bmadeira AT totalstor DOT com

--
Note: To sign off this list, send a "signoff networker" command via email
to listserv AT listmail.temple DOT edu or visit the list's Web site at
http://listmail.temple.edu/archives/networker.html where you can
also view and post messages to the list.
=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=

--
Note: To sign off this list, send a "signoff networker" command via email
to listserv AT listmail.temple DOT edu or visit the list's Web site at
http://listmail.temple.edu/archives/networker.html where you can
also view and post messages to the list.
=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=

<Prev in Thread] Current Thread [Next in Thread>