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OK, I have done some testing on this - The MaximumSGList registry fix
works with the Adaptec 3940, 2940UW, and 29160. It does NOT however work
for the 2940U2W cards...
This caused me many headaches as all our interstate offices are equipped
with 2940U2W cards... though I guess thats just murphys law working.
MaximumSGList is not specific to adaptec BTW - its used for any DMA
device.
Cheers,
Matt
"Willeat, Todd" <TWilleat AT MHP.SMHS DOT COM>
Sent by: Legato NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>
28/07/2005 09:30 AM
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"Willeat, Todd" <TWilleat AT MHP.SMHS DOT COM>
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Subject
Re: [Networker] SCSI card that can support 64, 96 and128KB Block sizes
MaximumSGList may be specific to Adaptec. That is what I have always
used...
-----Original Message-----
From: Legato NetWorker discussion
[mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU]On Behalf Of Matthew Robert
Sent: Wednesday, July 27, 2005 6:17 PM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: [Networker] SCSI card that can support 64, 96 and128KB Block
sizes
This email is to be read subject to the disclaimer below.
Good morning all,
Recently we upgraded our backup server, and SCSI cards. Our old setup used
to use a block size of 128KB, however the new setup can only handle 64KB
blocks. I am sure this is due to the different SCSI adaptors we are now
using. Running the command "mt -f \\.\Tapex stat" (where x is the drive
number) it tells me the the maximum block size is 64KB. This is a problem,
because I cannot restore any tapes that were written on our old setup.
The adaptors are Compaq/HP 5312's, and the library is an ATL P2000 with
SDLT320 drives. I have tried increasing the DWORD value for the
MaximumSGList value in the registry, however it appears to have had no
effect on the maximum block size.
Can anyone reccomend a SCSI card that will support up to 128KB blocks?
Thanks!
Matthew S. Robert
National Data Backup & Retention Administrator
Information Systems & Communications
Ernst & Young
Direct: +612 9248 4784
Fax: +612 9248 5815
Matthew.Robert AT au.ey DOT com
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