
Chapter 1 Theory of Operation
SuperLoader DLT
2 Quantum ATL SuperLoader Software Interface Guide
SuperLoader DLT 1
The SuperLoader DLT family of products utilize a single SCSI ID
and two logical units. The tape drive always resides at logical unit
0 and the media changer resides at logical unit 1. The SuperLoader
supports narrow and wide, synchronous and asynchronous data
transfers. Both LVD and single-ended versions are available.
SuperLoader LTO 1
The SuperLoader LTO family of products utilize two separate SCSI
IDs. The tape drive and media changer each reside on a unique ID.
The media changer device supports narrow and wide,
asynchronous data transfers only. The tape drive device supports
narrow and wide, synchronous and asynchronous data transfers.
Medium Changer Elements 1
The medium changer command set accesses the address space for
the set of physical locations and mechanisms with the
SuperLoader. This guide uses the SCSI-2 term element to refer to
one member of the SuperLoader address space. Each element is a
discrete physical entity that can hold a single tape cartridge. Each
element within a SuperLoader is represented by a unique 16-bit
element address. The SuperLoader consists of the following
medium changer elements.
• Medium transport element
• Storage elements
• Data transfer elements
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