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Adaptive Media Technology
One of the greatest strengths of the libraries is the Adaptive Media Technology (AMT),
which encompass the ability to read the volume serial number (VOLSER) labels on the
cartridges stored in the library. AMT consists of a collection of innovations that allow the
library to accommodate multiple drive types and their corresponding media
simultaneously. The libraries will also support new drive and media types when they are
available.
■
Supported Drives
The libraries support Digital Linear Tape (DLT) 7000E, 8000, Super DLT (SDLT) 220
and 320 from Quantum Corporation; DLT1 from Benchmark Storage Innovations, Inc;
and Linear Tape–Open (LTO) Ultrium drives from the LTO Consortium.
You may mix drive types within a library, but please observe the following cautions:
•
StorageTek does not advise you to mix DLT 7000 and DLT 8000 drives in the same
library. When you place a DLT 7000 cartridge into a DLT 8000 drive, the drive will
read but not write on the cartridge. When you place a DLT 8000 cartridge into a
DLT 7000 drive, the drive assumes that the cartridge is blank and writes over the
existing data on the cartridge.
•
StorageTek does not advise mounting SDLT 320-formatted cartridges into SDLT
220 drives. An SDLT 220 drive will overwrite the 320 data. To avoid this, carefully
manage the locations of the cartridges within your library, and designate the correct
drive type for your read/write operations.
•
DLT1 drives use only DLTtape IV cartridges.
The flexibility of using different types of drives protects your investment. For example,
you can initially purchase an L80 tape library with DLT 8000 drives. As performance
requirements increase, you can add Ultrium drives. This flexibility also enables smooth
data migration from one type of media to another—all within the same library. Your
system adapts freely to future drive technology without requiring you to purchase a new
library.
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Audit of Library
An audit is how the library keeps track of all cartridges within the library. An audit occurs
when you:
•
Power-on the library
•
Open and close the door (drawer in the L20)
MT9104
Seventh Edition
4
4-1
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