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тАО01-30-2007 03:37 AM
тАО01-30-2007 03:37 AM
"The current SCSI configuration is likely to be limiting the performance of the drive.
Please check that your HBA is the correct type for the drive and that the cabling is good.
The SCSI configuration referenced is the one for which device analysis was run and/or the support ticket was pulled.
If this is not via your backup server then you may not have an issue.
Current SCSI transfer rate limited to: 20 MB/sec. Recommended: 80 MB/sec. or better
The drives hardware compression algorithm is currently switched off.
This was probably set by the backup software.
The drive's setup has not been altered."
We used the NTBackup utility, but our plans are change it. I don't know if this problems are because the NTBackup or any parameter in the HBA.
Maybe somebody can give me a light about a way to try to increase the tape performance.
Thanks for all your help.
Luis Ram├нrez V.
Solved! Go to Solution.
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тАО01-30-2007 07:41 AM
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тАО01-30-2007 08:29 AM
тАО01-30-2007 08:29 AM
Re: LTO Driver performance
Thanks again for all your help.
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тАО01-30-2007 09:15 AM
тАО01-30-2007 09:15 AM
Re: LTO Driver performance
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тАО01-30-2007 09:25 AM
тАО01-30-2007 09:25 AM
Re: LTO Driver performance
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тАО01-31-2007 02:19 AM
тАО01-31-2007 02:19 AM
Re: LTO Driver performance
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тАО06-14-2007 09:47 PM
тАО06-14-2007 09:47 PM
Re: LTO Driver performance
I have very similar problem. Ultrium-3 1/8 Autoloader is the only device connected to Ultra320 HBA (Adaptec 39320A none raid). It is connected and terminated with factory cable and terminator supplied by HP common with device. The HBA is configured correctly, firmware and drivers are updated to latest for HBA and Autoloader. The autoloader device works fine but L&TT says the speed is limited to Ultra160.
Regards
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тАО09-04-2007 12:15 AM
тАО09-04-2007 12:15 AM
Re: LTO Driver performance
I too, have a similar problem with Ultrium 3-SCSI in a MSL TapeLibrary. Connected to Adaptech 39160 (no other devices connected). All firmware and drives are updated.
L&TT reports the same warnings.
Have you got a solution by now?
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тАО09-04-2007 07:39 AM
тАО09-04-2007 07:39 AM
Re: LTO Driver performance
I would try a few different driver revisions and check to see if there are different revisions of firmware for the HBA if there aren't any obvious cabling issues. Feel free to post if you find something that works. If it is an HBA driver or tape drive we can go back to the vendor and ask them to fix it.
Regardless of the cause, an LTO Ultrium 1,2, or 3 drive running at U160 will perform at it's maximum rate in most environments so I wouldn't be too concerned about U160 with those drives.
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тАО09-05-2007 03:45 AM
тАО09-05-2007 03:45 AM
Re: LTO Driver performance
Here are some more informations:
The SCSI cable is delivred with the the Library - compaq spare: 110941-001.
The terminator is MSKL R800-01A Ultra320 LVD/SE.
To me it seems that both cable and terminator are OK!
The driver and firmware for the Adaptec 39160 are up to date.
To me it seem more and more like a combatibility issue between Adaptec and HP!