Re: [Networker] Seagate tape drive block size issue

Hi Stan;

There should be a registry entry for the device in question located under the 
following:

\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\<devicename>

In our environment to change the block size of the 9840B, we had to change the 
following:

\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\aic78xx\Parameters\Device\MaximumSGList:REG_DWORD:0x11

You will have to do some searching depending on your device.

If you use a decimal value, they are as follows:

64k 17 decimal 11 hex
96k 25 decimal 19 hex
128k 33 decimal 21 hex
256k 65 decimal 41 hex
512k 129 decimal 81 hex

Good luck,

Carter Fowler
Hardware Service Technician
The City Of London
380 Wellington St. Suite 600
London, ON, CA, N6A 5B5
Off. 519.661.5711
Cel. 519.870.4956
E-mail. cfowler AT city.london.on DOT ca


-----Original Message-----
From: stan AT TEMPLE DOT EDU 
Sent: October 10, 2002 4:05 PM
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU; stan AT TEMPLE DOT EDU
Subject: Seagate tape drive block size issue

Just for testing purposes, a colleague has installed Legato Networker
6.1.1 on a laptop with a Seagate Archive 4586NP tape drive connected to
it. This device uses DDS 2 tapes that has 4 GB uncompressed and 8GB
compressed capacity. Tapes can be labeled in this configuration, however,
when a backup begins, errors are received about a block size
incompatibility. This tape drive worked fine with other backup packages,
under Windows 2000.

I reviewed the archives and Seagate's web site, but I do not see how to
resolve this issue. I seem to recall that some sort of file needs to be
set up that sets the block size, but I couldn't find anything about that
in this list's archives.

Any tips on how to resolve this problem will be appreciated.

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