Thanks,

I did exactly that, Installed the Adaptec driver and then went to the SP3
version of the driver.  The drives are working perfectly now!

Ben

> -----Original Message-----
> From: Clemens Zerbe [mailto:ClemensZ AT TIM DOT DE]
> Sent: Tuesday, September 24, 2002 7:46 AM
> To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
> Subject: AW: [Networker] Slow (really slow) AIT-3 drives
> 
> 
> Hi,
> 
> i know your problem. It´s the same with LTO and other drive 
> types. Check
> your Adaptec device driver. The original windows version, 
> delivered from
> Microsoft has a bug. Just download a new one from Adaptec.com 
> and it should
> work.
> 
> Regards
> 
> Clemens 
> 
> -----Ursprüngliche Nachricht-----
> Von: Conrad, Ben [mailto:BConrad AT USPOWERSOLUTIONS DOT COM]
> Gesendet: Montag, 23. September 2002 20:54
> An: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
> Betreff: [Networker] Slow (really slow) AIT-3 drives
> 
> 
> Hi,
> 
> I've got Networker 6.2 on W2K (sp3) connected to a Adic 
> Scalar 100 with 2
> AIT-3 drives.
> 
> I'm having an issue where I can't write faster than 1.8MB/s 
> to \\.\Tape0 or
> \\.\Tape1.  I thought it might be a networking (speed/duplex) 
> or client
> disks being defragmented so I took them out of the loop by 
> copying about 1GB
> worth of 20MB and 50MB files to C:\temp\test (and created a 
> save set for
> that directory) on the local disk on the Networker server.  
> These disks will
> easily read/write large files at 8MB/s.
> 
> Backups worked very well in my test lab (library connected to 
> a Dell pc), I
> consistently got 8-9MB/s when backing up large files.  I 
> moved the Library
> and SCSI card to our server (Dell Poweredge 2450) and the backups are
> running really slow.  I didn't tweak any settings in the test 
> environment so
> I didn't need to do anything to the production environment.
> 
> Some of my settings:
> - Paralellism on tape drives: 12
> - server paralellism: 24
> - 64-bit Adaptec 29160 in a 32-bit PCI slot (this worked 
> great on the Dell
> PC)
> - Sony tape diagnostics have no problem talking to the drives
> - Tried both Microsoft and Adaptec drivers for the 29160
> - I "disabled" both AIT-3 drives in the w2k removeable storage manager
> - Not seeing any SCSI errors in the NT eventlog
> - Didn't tweak any settings on the 29160
> - Backups are not failing, just really slow
> 
> Any ideas?
> 
> Thanks,
> 
> Ben
> 
> 
> ____________________________________
> Benjamin Conrad
> Sr. Network Administrator
> USPowerSolutions
> mailto:bconrad AT uspowersolutions DOT com
> 617.547.3800 x195
> ____________________________________
> 
> 
> 
> 
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> dissemination, or
> distribution of it or its contents is prohibited.  If you 
> have received this
> communication in error, please notify USPowerSolutions Corporation
> immediately by telephone at (617)547-3800 or via e-mail at
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> communication and
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> 
> 
> 
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 This e-mail communication and any attachments are confidential and intended
only for the use of the designated recipients named above.  If you are not
the intended recipient, you are hereby notified that you have received this
communication in error and that any review, disclosure, dissemination, or
distribution of it or its contents is prohibited.  If you have received this
communication in error, please notify USPowerSolutions Corporation
immediately by telephone at (617)547-3800 or via e-mail at
ops AT uspowersolutions DOT com and destroy all copies of this communication and
any attachments. 



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