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Data recovery help

 
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Occasional Advisor

Data recovery help

I was just assigned an issue within our company and I really don't know where to start. First, I know nothing about OpenVMS, and the system is running 7.2-1. I can login to the system with the administrator account and that's about it. Turns out the application crashed years ago and is not recoverable. System has a jukebox attached, and most data was converted to a new system. However, 30 platters from the jukebox were overlooked, and over 500,000 records are missing from the conversion that our auditors require that we recover--software vendor is defunct. I have no clue how to recover any data from these platters, how to get it off of the system, how to even find out if I can get to it. Any takers on getting me started?
21 REPLIES 21
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Honored Contributor

Re: Data recovery help

carlotta,

i would suggest you look to get in some consultancy on this, a number of contributors on this forum offer these services.

could you post the output from 'show cpu/full' 'sh dev d/full' and 'show dev mk/full' this should give some of the guys here a start.

good luck

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Honored Contributor

Re: Data recovery help

Carlotta,

welcome to the OpenVMS ITRC forum, although I wish you had a less severe reason fro coming here.

Please first provide the type of jukebox drive you're using. Looking at the hardware drive, it should be possible to read some sticker or such with the type of device.

Use some kind of terminal emulator to login to your OpenVMS system and activate the session log file. Then issue commands like:

$ SHOW DEV D
$ ANAL/SYS
SDA> CLUE CONFIG
SDA> CLUE SCSI/SUMM
SDA> EXIT

And then provide the session log file text as a .TXT attachment to your next reply.

Volker.
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Occasional Advisor

Re: Data recovery help

There are no funds for consultancy at this point. And while I can run these commands and output them to files, I can't see all of the information on the screen and don't know how to get the files off of the server. Believe me when I said I know nothing about VMS. No one here does.
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Occasional Advisor

Re: Data recovery help

Ah, just figured out about the session logging.
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Honored Contributor

Re: Data recovery help

Hello and welcome to ITRC.

On no evidence, this is likely an rwz-series MO jukebox (eg: the rwz01 series, or analogous), and you will end up calling in formal help. MO drives were popular for a while, and then mostly disappeared. The CD and DVD formats won that round.

Do confirm the identity of the particular drive, of course, but that detail does not alter the reverse-engineering sequence.

Somebody will have to reverse-engineer the application data formats involved here, and no, there's no way to do that in a tiny little box here in ITRC and no, there's no automatic data definition used in OpenVMS. Each application tends to use its own formats and its own approach for how the structures within the records within the files are organization.

Then there's the whole issue of getting the raw data off the (I assume) MO platters. That data may or may not read back correctly.

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Honored Contributor

Re: Data recovery help

Carlotta,

can you login to your OpenVMS system using a TELNET client ? I assume you're logged in on the console terminal right now or on some other physically connected terminal.

Try $ UCX SHOW INT - you may be shown an IP address of that node.

Then try DOS> TELNET ip-adress from a PC connected to the same network. If you get a Username prompt, login. If you can do this, then you can also capture the output and post it here.

Volker.
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Honored Contributor

Re: Data recovery help

carlotta,

which terminal emulator are you using or is this a vt terminal directly attached to the system ? if it's a term emulator just cut and paste them into a txt file on your pc. if you are on a vt do :-

$ ucx sh inter
$ ucx sh serv
$ ucx sh route

this should give you the ip address(es) on the system and which ip sewrvices are up currently
and where they route through. hopefully ftp is enabled and you can use that to lift the files
off the system , if telnet is enabled and you
have access to the network it is on i would suggest using a terminal emulator such as putty where you can scroll up the input/cut and paste out etc.

hope this helps

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Occasional Advisor

Re: Data recovery help

Wow, you guys are fast. Here is the session log from the requested commands. Looks like I may be in WAY over my head (as if I didn't already know that!)

Appreciate any additional assistance. I figured the records would be specific to the application, and there is still a conversion process, but I just have to physically get them off of the platters and the system to a PC to see if they can be converted at that point.
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Honored Contributor

Re: Data recovery help

Use of the PC is absolutely and completely the wrong approach.

If you follow that approach, not only will you be fighting with the application data formats, but you'll also be fighting with file-format differences, and potentially also with floating-point or platform-specific data formats. This is an OpenVMS project, if you're on a budget.

If you stay on OpenVMS, you'll (only) be fighting with the data formats and the application; with reverse engineering with the existing tools and applications. Staying native is infinitely easier.