Tandberg Data SLR AUTOLOADER PROGRAMMER User manual

TANDBERG SLR
AUTOLOADER
SCSI INTERFACE
FUNCTIONAL SPECIFICATIONS
TM
TANDBERG DATA ASA
P.O. Box 134 Kjelsås
N-0411 OSLO, NORWAY
Phone + 47 22 18 90 90
Telefax + 47 22 18 95 50
© Tandberg Data ASA
Part No. 43 20 73-03
December 2003

Related publications available from our Marketing Department:
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43 21 77 - 03 Tandberg SLR Autoloader Installation and User Manual
43 20 72 - 03 Tandberg SLR Autoloader Service and Repair Manual
43 20 74 - 01 Tandberg SLR Autoloader Product Verification Reports
43 04 44 - 11 Tandberg SLR7 – SLR140 Reference Manual
43 07 43 - 13 Tandberg SLR7 – SLR140 SCSI Interface Functional
Specification
This publication may describe designs for which patents are granted or pending.
By publishing this information, Tandberg Data ASA conveys no license under
any patent or any other rights.
Every effort has been made to avoid errors in text and diagrams. However,
Tandberg Data ASA assumes no responsibility for any errors which may appear
in this publication.
It is the policy of Tandberg Data ASA to improve products as new techniques
and components become available. Tandberg Data ASA therefore reserves the
right to change specifications at any time.
We would appreciate any comments on this publication.

Table of Contents
1 Overview 1-1
2 SCSI Commands 2-1
2.1 INITIALIZE ELEMENT STATUS 07h 2-2
2.2 INITIALIZE ELEMENT STATUS WITH RANGE E7h 2-3
2.3 INQUIRY 12h 2-4
2.3.1 Standard Inquiry Response 2-5
2.3.2 Supported Vital Product Data Page 00h 2-8
2.3.3 Unit Serial Number Page 80h 2-8
2.4 LOG SENSE 4Dh 2-9
2.4.1 LOG SENSE Page Format 2-10
2.4.2 LOG SENSE Page Header Format 2-10
2.4.3 LOG SENSE Page 00h Format 2-11
2.4.4 LOG SENSE Page 2Eh Format 2-11
2.4.5 LOG SENSE Page 30h, 31h, 32h Format 2-13
2.5 MODE SELECT 15h 2-14
2.5.1 MODE SELECT Parameter List 2-14
2.5.2 MODE SELECT Page Format 2-15
2.5.3 Element Address Assignment Page 1Dh 2-16
2.5.4 Library Mode Page 23h 2-17
2.6 MODE SENSE 1Ah 2-18
2.6.1 MODE SENSE Parameter List 2-19
2.6.2 MODE SENSE Page Format 2-19
2.6.3 Element Address Assignment Page 1Dh 2-20
2.6.4 Default, Changeable and Saved Values for Page 1Dh 2-21
2.6.5 Transport Geometry Parameters Page 1Eh 2-22
2.6.6 Device Capabilities Page 1Fh 2-23
2.6.7 Library Mode Page 23h 2-25
2.6.8 Library Configuration Page 24h 2-26
2.7 MOVE MEDIUM A5h 2-27
2.8 POSITION TO ELEMENT 2Bh 2-28
2.9 PREVENT ALLOW MEDIUM REMOVAL 1Eh 2-28
2.10 READ ELEMENT STATUS B8h 2-29
2.10.1 Element Status Data Header 2-30
2.10.2 Medium Transport Element Status Page 2-31
2.10.3 Storage Element Status Page 2-33
2.10.4 Import Export Element Status Page 2-35
2.10.5 Data Transfer Element Status Page 2-37
2.11 RELEASE 17h 2-39
2.12 REQUEST SENSE 03h 2-40
2.12.1 Sense Information Format 2-41
2.13 REQUEST VOLUME ELEMENT ADDRESS B5h 2-45
2.13.1 Volume Element Address Header 2-46
2.14 RESERVE 16h 2-47
2.14.1 Element List Descriptor 2-48
2.15 SEND DIAGNOSTIC 1Dh 2-49
2.16 SEND VOLUME TAG B6h 2-50
2.16.1 Send Volume Tag Parameter List 2-51
2.17 TEST UNIT READY 00h 2-52
2.18 WRITE BUFFER 3Bh 2-53
3 SCSI Status and Messages 3-1
3.1 Supported SCSI Status Codes 3-1
3.2 Supported SCSI Message Codes 3-1

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Tandberg SLR Autoloader SCSI Functional Specifications 1-1
1 Overview
The purpose of this specification is to provide a definition of the SCSI
implementation for the Tandberg Data SLR Loader medium changer device.
For SCSI implementation information regarding the SLR tape drives (Data
transfer element), refer to the SLR7-140 Programers Manual: SCSI-2
Interface Functional Specifications Tandberg Data P/N 430743.
The SLR Loader consists of one medium changer device, one SLR tape drive,
one eight-cartridge removable magazine, and an integrated bar code reader.
The medium changer and the tape drive are single LUN SCSI devices, each
occupying a unique SCSI address. The individual SCSI address of the
autoloader and the internal drive are programble from the front pannel of
the unit. The SLR Autoloader supports both Single-ended and LVDS SCSI
interfaces as standard. The dual SCSI connectors on the back of the unit are
the standard SCSI-3 68-pin high-density connectors. Refer to the SLR
Autoloader Installation Manual (Tandberg Data P/N 432177 (SLR60-140))
for details on SCSI addressing, interconnect, termination, and cabling
considerations.
All SLR Loader configurations utilize three of the medium changer element
types defined in the SCSI Standard - one data transfer element (the tape
drive), one medium transport element (the cartridge picker/elevator), and
the storage elements (one for each magazine slot).
The SLR Loader operates in either sequential or random access mode,
depending on the configuration stored in its non-volatile memory. In
random access mode, cartridges are moved to and from the tape drive by
issuing the SCSI MOVE MEDIUM command to the medium changer device.
In sequential mode, cartridges are sequentially moved by issuing the SCSI
UNLOAD command to the tape drive (after manually loading the first tape).

Tandberg Data Overview
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1-2 Tandberg SLR Autoloader SCSI Functional Specifications
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Tandberg SLR Autoloader SCSI Functional Specifications 2-1
2 SCSI Commands
The following table summarizes the command set for the SLR Loader
medium changer:
OPCODE COMMAND
07 INITIALIZE ELEMENT STATUS
E7 INITIALIZE ELEMENT STATUS W/RANGE
12 INQUIRY
4D LOG SENSE
15 MODE SELECT
1A MODE SENSE
A5 MOVE MEDIUM
2B POSITION TO ELEMENT
1E PREVENT ALLOW MEDIUM REMOVAL
B8 READ ELEMENT STATUS
17 RELEASE
03 REQUEST SENSE
B5 REQUEST VOLUME ELEMENT ADDRESS
16 RESERVE
1D SEND DIAGNOSTIC
B6 SEND VOLUME TAG
00 TEST UNIT READY
3B WRITE BUFFER

Tandberg Data SCSI Commands
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2-2 Tandberg SLR Autoloader SCSI Functional Specifications
2.1 INITIALIZE ELEMENT STATUS 07h
Bit
Byte 76543210
0 Operation Code (07h)
1 Logical Unit Number Reserved
2 Reserved
3 Reserved
4 Reserved
5 Mode Reserved Flag Link
The INITIALIZE ELEMENT STATUS command will cause the medium
changer to check any relevant element status. A subsequent READ
ELEMENT STATUS command may be used to retrieve element status
information. Since the medium changer always maintains the current
element status information, the default operation of this command only
determines if the changer is ready.
Mode
The setting of the Mode field defines whether or not an inventory is
performed by this command:
Mode Description
00b Do not re-inventory elements or bar codes, use current valid element status
01b Re-inventory bar codes only, if bar code reader is enabled
10b Do not re-inventory elements or bar codes, use current valid element status
11b Re-inventory all elements and bar codes, if bar code reader is enabled

Tandberg Data SCSI Commands
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Tandberg SLR Autoloader SCSI Functional Specifications 2-3
2.2 INITIALIZE ELEMENT STATUS WITH RANGE E7h
Bit
Byte 76543210
0 Operation Code (E7h)
1 Logical Unit Number Reserved Range
2 Element Address (MSB)
3Element Address (LSB)
4 Reserved
5 Reserved
6 Number of Elements (MSB)
7Number of Elements (LSB)
8 Reserved
9 Mode Reserved Flag Link
The INITIALIZE ELEMENT STATUS WITH RANGE command will cause
the medium changer to check the status of the requested range of elements.
A subsequent READ ELEMENT STATUS command may be used to retrieve
element status information. Since the medium changer always maintains
the current element status information, the default operation of this
command only determines if the changer is ready.
Range
A Range bit of zero indicates that all elements are to be initialized. A Range
bit of one indicates that the range of elements specified by the Element
Address and the Number of Elements fields are to be initialized.
Element Address
This field specifies the address of the element or the starting address of the
range of elements to be checked. This field is ignored when the Range bit is
zero.
Number of Elements
This field specifies the maximum number of elements to be checked. This
field is ignored when the Range bit is zero.
Mode
The setting of the Mode field defines whether or not an inventory is
performed by this command:
Mode Description
00b Do not re-inventory elements or bar codes, use current valid element status
01b Re-inventory bar codes only, if bar code reader is enabled
10b Do not re-inventory elements or bar codes, use current valid element status
11b Re-inventory all elements and bar codes, if bar code reader is enabled

Tandberg Data SCSI Commands
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2-4 Tandberg SLR Autoloader SCSI Functional Specifications
2.3 INQUIRY 12h
Bit
Byte 76543210
0 Operation Code (12h)
1 Logical Unit Number Reserved EVPD
2 Page Code
3 Reserved
4 Allocation Length
5 Vendor Unique Reserved Flag Link
The INQUIRY command requests that information regarding parameters of
the medium changer be sent to the initiator.
EVPD
An enable vital product data (EVPD) bit of zero specifies that the target
shall return the standard INQUIRY data. An EVPD bit of one specifies that
the device shall return the vital product data based on the Page Code field.
Page Code
The page code field is used to specify which page of vital product data to
return if the EVPD bit is set to one.
Page Code Page Description
00h List of supported VPD pages
80h Unit Serial Number page
Allocation Length
This specifies the maximum number of bytes that the initiator has allocated
for returned Inquiry data. An Allocation Length of zero indicates that no
Inquiry data is transferred. This condition is not considered an error. The
device will terminate the DATA IN phase when allocation length bytes have
been transferred, or when all available Inquiry data has been transferred to
the initiator, whichever is less.