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I like the idea that we are not limited to what was the physical size of the tapes. In an emulated world like Hercules, I would like to set the size of my backup file at just under what I can write to

On the main Hercules page, if you scroll down about 1/2 way, you should see a section titled "PDF manuals": * https://sdl-hercules-390.github.io/html/#docs PLEASE NOTE the disclaimer! "The below PDF

Bertram Moshier wrote: [...] With Hercules, this is user configurable and controlled by the optional "MAXSIZE=" and "EOTMARGIN=" tape drive device parameters: *

A version 4 Hercules manual can be found at: https://hercdoc.glanzmann.org/V400/HerculesOperationsandUtilities.pdf I'm sure there are other places. ... Mark S.

Tape files are not limited to feet of tape, but to the size of the filesystem/available space. You can, if you have it, attach real devices, like SCSI tape drives to Hercules, and use those. I don't

Data compressions is already in place at the Hercules level, when you create a tape. See: https://hercdoc.glanzmann.org/V400/HerculesOperationsandUtilities.pdf Hercules Emulator V4.00 – Operations

I have been thinking about this and why VM lacked some of the basic subsystems needed for production work. Me and my company worked for many separate organisations over 30 years. We saw the same

VM customers started sharing modifications and utilities decades before there was any Internet. VM's ease of use, and the availability of VM source code with a set of build tools, meant that VM user

My system did full backups of each minidisk on Sunday and then deltas for Monday through Saturday. We already had a mechanism to ask the Operators to mount a tape. I don't remember if there was any

I am sure there are many here that worked on many similar problems. A pity that Share wasn't as popular as GitHub seems to be and that everyone seemed more concerned about sharing IP.

OH! Your story remnided me of a second change I did to VMFPLC2. It was an important part of determining the differences / changes. I forget what I changed, but know I did change something. Are the

Fascinating that I built much the same thing. To make it work also built a job scheduler and something to allow security to handle access, something to issue privileged commands etc etc. This started

Hi, The software included a very basic form of tape management. It would tell the operator to mount a new tape and how to label the one just taken down. The software would keep track of the contents

Hi, It would really be great if someone could help me find my Share presentation on my backup program. Also it used a base, delta method. [email protected]> wrote:

On Windows, in the installation folder of Hercules. Start a command window, and type the command at the prompt. If the folder is in your path, you should get the syntax of the command displayed. It

A tape management system might need to be written too. And maybe a data compression option? /Tom Kern

Hi, As it has been awhile and I'm new to VM/CE, one of the things I need to know is how much data can I get on a 6250 reel of tape? What other backup devices does VM/CE support beside a 6250 drive?

You are correct about the 3330 and 3350. I wasn't reading DMKRIO closely. My mistake. Dasdint comnand? Where is it located (Windows, Herc, VM Exec, etc)?

To my knowledge, there is no such thing as a 3350-1 and 3350-11 and you won't see any of these in DMKRIO. In the Hercules configuration file, you don't need to code the model (that is 11 or 1),

Hello Tom, You're correct. OCF used DDR for each drive so both used and free space was going to tape. Restores were equally messy and were at the mini-disk and not file level. My program was at the