[Bacula-users] Rif: Re: LTO3 performance

I think you should use /dev/random, not /dev/zero unless hardware compression is disabled in order to have more realistic figures.

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Ferdinando Pasqualetti
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"Sergio Belkin" <sebelk AT gmail DOT com>

07/01/2009 13.55

Per	bacula-users AT lists.sourceforge DOT net
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Oggetto	Re: [Bacula-users] LTO3 performance

The output test was: dd if=/dev/zero of=/dev/nst0 bs=1M count=1000 1000+0 records in 1000+0 records out 1048576000 bytes (1.0 GB) copied, 7.80926 seconds, 134 MB/s I have a server let say A that has director and storage daemon with a DAT72 and other server say B which has storage daemon and a LTO3 drive. A and B has on the same Gigabit network and backup server on that network. Thanks you I added spooling, but I haven't collected relevant data to say it is an improvement, if you want I can send part of my configuration... thanks everyone Below is output of tapeinfo -f /dev/sg0 Product Type: Disk Drive Vendor ID: 'ServeRA ' Product ID: 'raid 1 ' Revision: 'V1.0' Attached Changer: No SerialNumber: '7E08591F' SCSI ID: 0 SCSI LUN: 0 Ready: yes BufferedMode: yes Medium Type: Not Loaded Density Code: 0x37 BlockSize: 3748166 DataCompEnabled: no DataCompCapable: no DataDeCompEnabled: no CompType: 0x35393146 DeCompType: 0x300000 Should I change something? Thanks in advance -- -- Open Kairos http://www.openkairos.com Watch More TV http://sebelk.blogspot.com Sergio Belkin - ------------------------------------------------------------------------------ Check out the new SourceForge.net Marketplace. It is the best place to buy or sell services for just about anything Open Source. http://p.sf.net/sfu/Xq1LFB _______________________________________________ Bacula-users mailing list Bacula-users AT lists.sourceforge DOT net https://lists.sourceforge.net/lists/listinfo/bacula-users

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