Hi Glenn,

To use the dlt drives with roadruner you will have to configure them as
id=dlt4000 in sysgen.

John "Danger" Skelton

-----Original Message-----
From: Glenn Mitchell [mailto:[log in to unmask]]
Sent: Wednesday, April 30, 2003 12:02 PM
To: [log in to unmask]
Subject: [HP3000-L] Connecting a DLT drive


 My 957 has been humming along running MPE/iX 6.0 for quite some time now
with little or no help from me :-)  (So my configuration skills have gotten
somewhat rusty; hence my plea to the list.)

We dropped hardware and software maintenance on the system some while back
as we continue to expect this system to be phased out "soon" and bucks are
tight here.  Unfortunately, we've been running into some problems with our
old 7980XC tape drives.  I think it's time to get rid of them (the last
HP-IB stuff we've got).  We've got some DLT4000 tape drives lying around and
I'd like to connect one or two to the 957 and use them for database,
incremental, and full backups.

My questions:

Can I simply hook a DLT4000 drive to the SE-SCSI port on the MFIO card, set
its SCSI address, and add the device as an HPC1521B?  I currently have LDEV
1 and the DDS tape on the internal SCSI bus.  Yes, I know I'd likely get
better performance with the DLT connected to a separate SE-SCSI card, but
I'd have to buy one and install it.

Are there known problems running ROC RoadRunner 5.0.2 with DLT drives?

I've always taken the system down before fooling with anything on the same
bus as LDEV 1.  I assume that's still the appropriate thing to do?

I'm assuming performance on a DLT4000 will be much better than with a basic
DDS drive?

Are there other gotchas I need to know about?

TIA.

Glenn Mitchell
3GM Associates, Inc
for Maine Medical Center

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