User's Guide
Table Of Contents
- Preface
- Theory of Operation
- Media Changer Commands
- Overview of Command and Status Processing
- Media Changer Command Descriptions
- Initialize Element Status Command (07h)
- Inquiry Command (12h)
- Load Unload Command (1Bh)
- Log Sense Command (4Dh)
- Mode Select (6) / (10) Command (15h / 55h)
- Mode Sense (6) / (10) Command (1Ah/ 5Ah)
- Move Medium Command (A5h)
- Persistent Reserve In Command (5Eh)
- Persistent Reserve Out Command (5Fh)
- Position to Element Command (2Bh)
- Prevent/Allow Medium Removal (1Eh)
- Read Buffer Command (3Ch)
- Read Element Status Command (B8h)
- Release Element (10) Command (57h)
- Release Unit (6) Command (17h)
- Report Device Identifier Command (A3h)
- Report LUNS Command (A0h)
- Request Sense Command (03h)
- Reserve Element (10) Command (56h)
- Reserve Element (6) Command (16h)
- Send Diagnostic Command (1Dh)
- Set Device Identifier Command (A4h)
- Test Unit Ready Command (00h)
- Write Buffer Command (3Bh)
- Index
Chapter 1 Theory of Operation
SuperLoader 3
Quantum SuperLoader 3 Software Interface Guide 2
SuperLoader 3
SuperLoader 3 has one SCSI ID and two logical units (LUN). The tape
drive always resides at logical unit 0 and the media changer resides at
logical unit 1. Because the drive supports the physical interface, the user
needs to reference the drive’s documentations for specific support. For
example, the sync bit in the Standard Inquiry Data Page (see “
Standard
Inquiry Data Page” on page 12) requires the drive hardware to report the
proper function.
Medium Changer Elements
The medium changer command set accesses the address space for the set
of physical locations and mechanisms within the SuperLoader 3. This
guide uses the SCSI-2 term element to refer to one member of the
SuperLoader 3 address space. Each element is a discrete physical entity
that can hold a single tape cartridge. Each element within a
SuperLoader 3 is represented by a unique 16-bit element address. The
SuperLoader 3 consists of the following medium changer elements.
• Medium transport element
• Storage elements
• Data transfer elements
You can issue the
Mode Sense command to determine the SuperLoader 3
configuration. You can also use this command to determine the first
address and the number of elements of each type.
Although the SuperLoader 3 does have a mailslot, it is not reported as an
Import/Export element for use by the host system. It is strictly to allow
users to access tape cartridges using the front panel or On-board Remote
Management tool.