My 8mm drive is *way* slower than yours.... (helphelphelp)
Eric Thompson
et at ocf.berkeley.edu
Sun Mar 17 12:57:10 AEST 1991
I finally got this new 8mm drive to work w/my 3B2/700. It's a Comtemporary
Cybernetics Group (CCG) 8200, and they got me the cable that works w/the
3B2. So, it works, using the standard Unix utilities. That's fine, but I
want to know if there's a way to speed it up.
The manual says:
"The maximum burst data transfer rate is limited by performance
of the SCSI Host Adapter and the CY-8200 buffer control hardware.
The maximum burst data transfer rate will not exceed 1.5MB/s.
Typical burst performance is expected to be approx. 1.2MB/s. This
level of performance has been measured when operating the CY-8200
attached to an Adaptec SCSI development system."
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
I need to find out more about such a system. Right now I'm getting bursts
of 150KB/s. The manual also mentions that the drive will run as a streaming
device if the computer sends at a minimum of 246KB/s. Even that would be a
MAJOR improvement.
Any information about Adaptec, Adaptec systems on a 3B2, or improving per-
formance on a 8mm hooked to a 3B2 using tar/cpio is appreciated.
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