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A tool to massively optimize/format/calibrate virgin LTO9 tapes  
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     # Massimo Scagliola 6c8af9bd5f Updated README and       2 hours
                    translation from IT                        ago
.gitignore     Added script                                 5 hours
                                                            ago
README.md      Updated README and translation from IT       2 hours
                                                            ago
optimizer.sh   Updated README and translation from IT       2 hours
                                                            ago

README.md
Unescape Escape

LTO9 Optimizer

This is a simple bash script to initialize/optimize LTO9 physical
tapes.

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 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. 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.

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.

Then you can run the command:

optimizer.sh </dev/sgX> <parallelism>

Where 'parallelism' is a number, which can be equal to the number of
the drives of the library/partition.

The script takes long pauses to avoid too many load/unload commands,
so... be patient.

It has been tested with both:

  * IBM TS4500 Tape Library
  * Quantum i6000 Tape Library

Dependencies

The only package required is mtx.

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. I wrote
the script in a day, then tested and fixed it.

Total time spent: 3 days.

Total money earned: none, so I'll just put it here.

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.

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