The DAT40 or DDS-4 was a radical departure from other DDS drives, because of
its speed. It needed something faster than the regular narrow single-ended
SCSI connection that DDS, DDS-1, DDS-2 and DDS-3 used.
I do not think that DDS-4 are available in anything other than LVD which is
not a connection that is available of the 9x9. On these machines, you only
have SE-SCSI and the misnamed FWSCSI, which is in fact an HVD-SCSI
connection. You have some choices.
You might want to investigate a DLT7000 or 8000 solution using your HVD
connections.
You could connect a DDS-4 to an SE-SCSI connection and watch the throughput
go into the toilet.
You can connect the DDS-4 to an HVD-SCSI using an HVD-to-LVD converter.
Here is a website with many links on it. I suggest to look at the second
PDF listed (c00070850.pdf) and turn to page 9. It has a good discussion on
SCSI connectivity with this device.
http://h20000.www2.hp.com/bizsupport/TechSupport/DocumentIndex.jsp?contentTy
pe=SupportManual&locale=en_US&docIndexId=179911&taskId=101&prodTypeId=12169&
prodSeriesId=63890
or
http://tinyurl.com/3wfcr
Here is compatibility list for media on DDS.
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?locale=en_US&o
bjectID=lpg50116&locale=en_US&taskId=101&prodSeriesId=63890&prodTypeId=12169
or
http://tinyurl.com/5rm5u
Denys
-----Original Message-----
From: HP-3000 Systems Discussion [mailto:[log in to unmask]] On Behalf
Of Dan Barnes
Sent: Monday, January 17, 2005 12:43 PM
To: [log in to unmask]
Subject: [HP3000-L] DDS4 and 9x9 System
Hi -L Gang,
I have done some searching and have not found a definitive answer, so have
opted to go to the collective :-).
We have a series 969, several 979, and two 989 hp3000 systems. In
evaluating several backup options, I have been asked to validate whether we
can use DDS4 drives on our existing systems. We currently have DDS3
drives, and would be looking at DDS4's for the additional storage. I have
seen references that DDS4 drives are not supported on 9x9ks systems.
Can anyone verify this for me ?
Thanks!
Dan
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