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Cannot read from DLT made by 3rd party
Mon, 2008-08-04 15:32 — Alex Asp
Hi guys.
I've got a couple of old projects on DLT made by another company, presumably in Scenarist 2.7.
When I'm trying to read the DLT's back using either DVDAE, or DDPAB I am getting an error message MISSING FILE MARK
Reading DDP failed.
It is not a matter of tape density and compression settings on the tape as I tried all possible combinations on my DLT-8000, and I know for sure that these tapes were successfully replicated in the past. Any ideas?
We have never supported Adaptec cards
Please see:
http://dvdafteredit.com/node/1498
I had an Adaptec card that worked once.
Larry
"Did the trick" = read/compare/verify success?
Is that what you meant Alex, the ATTO card worked for you and allowed successful readback/compare/verify?
I'm having no end of difficulty with a PCI Adaptec 2930CU, which seems to write fine,
but cannot read back DLTs created by DVDAE or DVDSP worth a damn
(System = Mac G4 733 MHz, OS 10.4.10, DVDAE 3.04 me)
Bruce
I would get an ATTO card
Hi Larry. Yes you are correct. I have never been able to read with this SCSI card. But you were right on the spot. I found an old ATTO UL3D Pro card in my studio and it did the trick.
Thanks.
I would get an ATTO card
Hi Alex,
Did I understand correctly that you have never been able to read with this SCSI card? And you are using a DLT8000? That would point the finger at the card. AFAIK, firmware has been fine since the early DLT7000 days. Yes, you can update it with a PC or Mac Pro running Bootcamp and Quantum's DLT Sage Utility.
Being able to write successfully does not mean that a setup can read. This has been a frequent failure point with bad hardware/firmware/drivers.
You could also try installing the latest ATTO driver to see if that helps.
Regards,
Larry
More on the subject
Hi Larry,
Here's the log entries for 3rd party tapes:
ID 5 Tape reader started
ID 5 Volume header NOTSET UNKNOWN
ID 5 No Sense, No additional sense information
ID 5 Task Status: CHECK_CONDITION
ID 5 Missing file mark
ID 5 Tape reader aborted
What is puzzling me is that i can't read back tapes that were written on this drive from either DVDAE or DDPAB. Even DVD SP can't read back its own tapes. It always misses file mark on any tape. I have never updated a firmware on this drive, and I will probably need to do it. (Do I need a PC for that?). I also buying a new drive on eBay, so we'll see if the story is different with the new drive.
For what is worth I am running a special DVDAE/DDPAB station on PowerMac G5 Dual 2.7GHz with 4 GB of RAM and plenty of storage space. I intentionally kept it on MAC OS X 10.4.11. The SCSI card is APPLE-supplied LSILogic made SCSI card, not the ATTO you recommend, but it always have written DLT's fine and never read it back properly.
Thanks,
Alex
File marks are necessary
Sorry Alex,
If it can't find the file marks, nothing can proceed. Have you tried a different drive, updated the firmware, etc?
Regards,
Larry
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