Quantum LTO-9 HH SAS, Руководство пользователя

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Chapter 2: Introduction
Media Optimization
16 Quantum LTO-9 HH SAS User’s Guide
Media Optimization
Media optimization is a new feature for the LTO-9 tape drive with LTO-9
media.
The increased number of tracks used to write data on tape requires
greater precision. Media optimization creates a referenced calibration
for each cartridge that enables the tape drive’s intelligent alignment to
optimize data placement. LTO-9 media optimization enhances LTO tape
long-term media durability.
It is important to consider when media optimization will be performed:
• Media optimization will be performed on first load of L9/LZ media
during initialization.
• Recommendation is to perform first load in the location of
deployment, which should be in a stable environment that meets
the recommended environmental specification .
• Media optimization is a one-time operation that can be completed
on any drive in the environment, enabling the media to be used
across all tape drives without further optimization.
Other considerations for media optimization:
• Media optimization averages 40 minutes per first load of a cartridge
to a tape drive. Although most media optimizations will complete
within 60 minutes some media optimizations may take up to 2
hours.
• Interruption of the process is not recommended.
• A different mount will not necessarily improve the time to complete
the one-time optimization.