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тАО12-10-2001 08:29 AM
тАО12-10-2001 08:29 AM
Ultrium 230 + NTBackup
Somehow if I backup my NTFS disks with NTBackup I only get a speed of 2MB/sec and not the 15MB/sec like mentioned in the manual.
Someone told me I have to format the disks with "format e: /a:64K"
Is this the solution or what esle can be done to get the drive working with 15MB/s in NTBackup.
How can I backup 'C:' with the correct speed - As far as I know, I can't tell NT40 how to format the disk with an '/a:64K'-Parameter when I install from CD.
Thanks for your help,
Andy
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тАО12-11-2001 02:20 AM
тАО12-11-2001 02:20 AM
Re: Ultrium 230 + NTBackup
I don't know thw answer to your question, but I can refer you to someone who knows. It is called "Performance Assessment Tool" and can be downloaded from here:
http://www.hp.com/cposupport/information_storage/software/pat12.exe.html
HTH,
Vince
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тАО12-11-2001 03:00 AM
тАО12-11-2001 03:00 AM
Re: Ultrium 230 + NTBackup
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тАО12-11-2001 03:26 AM
тАО12-11-2001 03:26 AM
Re: Ultrium 230 + NTBackup
Your friend may not be far from the truth. The way data is stored on harddisks influence the performance. See this link for details:
http://www.hp.com/cposupport/information_storage/support_doc/lpg50032.html
You can also try the new HP Instant Support software at:
http://www.hp.com/go/instantsupport
HTH,
Vince
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тАО12-12-2001 01:40 AM
тАО12-12-2001 01:40 AM
Re: Ultrium 230 + NTBackup
I still don't know why Data can only be written to the tape with a speed of 2MB/s.
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тАО12-12-2001 02:31 AM
тАО12-12-2001 02:31 AM
Re: Ultrium 230 + NTBackup
Do you have an extra drive? I know it's asking too much, but maybe you can test it with another drive and see whether you have the same performance.
Vince
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тАО12-12-2001 04:54 AM
тАО12-12-2001 04:54 AM
Re: Ultrium 230 + NTBackup
Can you configure the block or transfer size for NT Backup?
I would recommend a larger segment size (in Omniback, it recommends a 64k block size and a 2GB segment size). The segment size is defined as the size of data segments on the tape. I would look at tuning the size of these and see if that improves performance.
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тАО12-17-2001 02:12 PM
тАО12-17-2001 02:12 PM
Re: Ultrium 230 + NTBackup
NTbackup is not an aplication that will give you the best performance because of the buffering and blocksize limitations.
I would download and try a trial version of BackupExec, Omniback on others, configure it for use with a 64K blocksize and take it from there.
I have had good results with ArcServe together with the imaging option. 1 9GB disk and 1 Ultrium 230 drive, 14MB/sec
cheers,
-Cal.
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тАО02-07-2002 05:43 PM
тАО02-07-2002 05:43 PM
Re: Ultrium 230 + NTBackup
Also, make sure you upgrade to the latest firmware (E20D), as we couldn't get much more than 2MB/s with older versions.