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тАО05-05-2007 10:40 PM
тАО05-05-2007 10:40 PM
StorageWorks 1/8 Autoloader Library DLT VS80 performance
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тАО05-05-2007 11:28 PM
тАО05-05-2007 11:28 PM
Re: StorageWorks 1/8 Autoloader Library DLT VS80 performance
please provide more informations about you enviroment. You get round about 2 MB/s, a VS80 can deliver up to 8 MB/s (compressed 2:1). Which type of data did you backup? Many small files can reduce the throughput. Few big files oder databases can be backuped more quickly.
Kind regards,
Patrick
Patrick
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тАО05-06-2007 03:02 PM
тАО05-06-2007 03:02 PM
Re: StorageWorks 1/8 Autoloader Library DLT VS80 performance
My server is a dual 3.2GHz Xeon processor w/ 1.5GB RAM.
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тАО05-07-2007 05:58 AM
тАО05-07-2007 05:58 AM
Re: StorageWorks 1/8 Autoloader Library DLT VS80 performance
which backup software do you use?
Kind regards,
Patrick
Patrick
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тАО05-07-2007 06:02 AM
тАО05-07-2007 06:02 AM
Re: StorageWorks 1/8 Autoloader Library DLT VS80 performance
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тАО05-07-2007 06:13 AM
тАО05-07-2007 06:13 AM
Re: StorageWorks 1/8 Autoloader Library DLT VS80 performance
Here are the recommended cards for your server:
374654-B21 - Single channel Ultra320 SCSI HBA G2
268351-B21 - Dual channel Ultra320 SCSI HBA (Retired)
284688-B21 - Dual channel Ultra3 SCSI HBA (Retired)*
* Please ensure the adpu160m.sys driver Version 6.1.640.100 or higher (available from www.compaq.com/support) is used in this configuration.
Per:
http://www.hp.com/products1/storage/compatibility/tapebackup/ISS/Detail/16-0025-0056.html
Being connected to a RAID controller can cause not only performance issues but also detection problems, stuck tapes, rjeected media and other issues that will prevent successful backups.
Per:
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=lpg50003&jumpid=reg_R1002_USEN
Tape devices also need to be isolated and NOT daisy-cahined on the bus with any other products including hard drives or other tape devices.
Please make sure the bus is terminated.
The Block & Buffer size in your backup software needs to be set to 64k for the DLT VS 80 drive.
I hope this helps! :)
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тАО05-07-2007 06:14 AM
тАО05-07-2007 06:14 AM
Re: StorageWorks 1/8 Autoloader Library DLT VS80 performance
http://support.veritas.com/docs/249090
http://support.veritas.com/docs/243636
http://support.veritas.com/docs/244747
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тАО05-07-2007 06:16 AM
тАО05-07-2007 06:16 AM
Re: StorageWorks 1/8 Autoloader Library DLT VS80 performance
Please let me know if there is more info regarding the slow backups, and I will see what else I can recommend.