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LTO9-Optimizer
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Massimo Scagliola 2023-07-05 09:41:57 +02:00
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LICENSE Normal file
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MIT License
Copyright (c) 2023 Massimo Scagliola
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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README.md
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# LTO9 Optimizer # LTO9 Optimizer
This is a simple bash script to initialize/optimize LTO9 physical tapes. This is a simple Bash script to initialize/optimize LTO9 physical tapes.
## The problem ## The Problem
Enterprise LTO9 tapes are cool, but if you buy them in stocks of 1,000, or even 2,000, you potentially need [weeks](https://www.ibm.com/docs/en/ts4500-tape-library?topic=drives-media-optimization) before using them. Enterprise LTO9 tapes are cool, but if you buy them in stocks of 1,000, or even 2,000, you potentially need [weeks](https://www.ibm.com/docs/en/ts4500-tape-library?topic=drives-media-optimization) before using them.
A single tape is held from 20 minutes up to 2 hours in the drive, and you cannot do anything but wait. A single tape is held from 20 minutes up to 2 hours in the drive, and you cannot do anything but wait.
This is the standard behavior from this LTO generation. This is the standard behavior from this LTO generation.
I find unnerving that enterprise tape libraries are sold without a feature to do this automatically, so I wrote this simple bash script. I find unnerving that enterprise tape libraries are sold without a feature to do this automatically, so I wrote this simple Bash script.
## The solution ## The Solution
Connect the Tape Library to a Linux server using SAS or FiberChannel (I only have tested FC), then run `lsscsi -g | grep medium` to get the special device of the changer, which will be something like `/dev/sgX`. Connect the Tape Library to a Linux server using SAS or FiberChannel (I only have tested FC), then run `lsscsi -g | grep medium` to get the special device of the changer, which will be something like `/dev/sgX`.
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The only package required is [mtx](https://linux.die.net/man/1/mtx). The only package required is [mtx](https://linux.die.net/man/1/mtx).
## Fun facts ## Fun Facts
As far as I know, up to today, 4th of July, 2023, none of the major brands of Tape Libraries can provide a tool capable of this. As far as I know, up to today, 4th of July, 2023, none of the major brands of Tape Libraries can provide a tool capable of this.
I wrote the script in a day, then tested and fixed it. I wrote the script in a day, then tested and fixed it.
@ -39,6 +39,8 @@ Total time spent: 3 days.
Total money earned: none, so I'll just put it here. Total money earned: none, so I'll just put it here.
## Disclaimer
Please note that this script **does not mean to replace** any of the eventual official tools that may exist – but sadly I wasn't aware of. Please note that this script **does not mean to replace** any of the eventual official tools that may exist – but sadly I wasn't aware of.
P.S. I am aware the script is poorly written, but I don't have a test environment anymore to test it properly. I'll do it in my spare time. P.S. I am aware the script is poorly written, but I don't have a test environment anymore to test it properly. I'll do it in my spare time.