Seagate Viper 200 User manual

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Viper 200
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LTO Tape Drive
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SCSI Interface Manual
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Viper 200
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LTO Tape Drive
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SCSI Interface Manual
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© 2001 Seagate Removable Storage Solutions, LLC. All rights reserved
Manufacturing Part Number: 100109647, Rev. B
Seagate and the Seagate logo are trademarks of Seagate Technology, LLC. Viper is
a trademark of Seagate Removable Storage Systems, LLC. Other product names
are trademarks or registered trademarks of their owners.
Seagate reserves the right to change, without notice, product offerings or
specifications. No part of this publication may be reproduced in any form without
written permission from Seagate Technology, LLC.
Publication Number T001, Rev. C; February, 2001

Important Information About This Manual
All information contained in or disclosed by this document is proprietary to Seagate
Technology. By accepting this material, the recipient agrees that this material and
the information contained therein are held in confidence and in trust and will not be
used, reproduced in whole or in part, nor its contents revealed to others, except to
meet the purpose for which it was delivered. It is understood that no right is
conveyed to reproduce or translate any item herein disclosed without express written
permission from Seagate Technology.
Seagate Technology provides this manual "as is," without warranty of any kind,
either expressed or implied, including, but not limited to, the implied warranties of
merchantability and fitness for a particular purpose. Seagate Technology reserves
the right to change, without notification, the specifications contained in this manual.
Seagate Technology assumes no responsibility for the accuracy, completeness,
sufficiency, or usefulness of this manual, nor for any problem that might arise from
the use of the information in this manual.

Page iv LTO SCSI Interface Manual
Contents
Introduction 1
About This Manual...................................................................................................... 1
SCSI Interface Overview 2
ANSI SCSI Bus Standards ................................................................................... 2
Cabling and Connectors....................................................................................... 2
SCSI Conformance..................................................................................................... 3
General features................................................................................................... 3
Interface standards conformance......................................................................... 3
LTO Conformance....................................................................................................... 3
Strategy....................................................................................................................... 4
Reset Condition.................................................................................................... 4
Unit Attention Condition........................................................................................ 4
Contingent Allegiance Condition........................................................................... 4
Buffered Mode...................................................................................................... 5
Immediate Function.............................................................................................. 5
Residual Length Function..................................................................................... 5
Disconnect/Reconnect Function........................................................................... 6
Early Warning Function........................................................................................ 6
Error Reporting..................................................................................................... 6
Variable and Fixed Mode Recording .................................................................... 7
Library Features ................................................................................................... 8
SCSI Messages and Status Codes 10
SCSI Messages ........................................................................................................ 10
Inbound messages ............................................................................................. 10
Outbound messages .......................................................................................... 11
Extended messages........................................................................................... 12
Parity errors........................................................................................................ 12
Message exception handling.............................................................................. 14
SCSI Commands 16
Command Set........................................................................................................... 16
Conventions........................................................................................................ 17

Contents Page v
Command Descriptor Blocks .....................................................................................17
Command Descriptor Block Formats ..................................................................17
Operation Code Format.......................................................................................18
Control Byte Format............................................................................................18
Command Status.......................................................................................................19
Status Byte Format..............................................................................................19
Status Codes.......................................................................................................19
ERASE.......................................................................................................................20
Command Descriptor Block.................................................................................20
Completion Status...............................................................................................21
INQUIRY....................................................................................................................22
Command Descriptor Block.................................................................................22
Standard Inquiry Data Page................................................................................23
Supported Vital Product Data (VPD) Page (00h)................................................24
Unit Serial Number Page (80h) ...........................................................................25
Device Identification Page (83h) .........................................................................26
Drive Component Revision Levels Pages (C0h, C1h) ........................................27
Drive Component Serial Number Page (C2h,C3h,C4h,C5h,C6h).......................28
Drive Status Page (DFh).....................................................................................28
Completion Status...............................................................................................32
LOAD UNLOAD.........................................................................................................33
Command Descriptor Block.................................................................................33
Completion Status...............................................................................................35
LOCATE.....................................................................................................................36
Command Descriptor Block.................................................................................36
Completion Status...............................................................................................37
LOG SELECT ............................................................................................................38
Command Descriptor Block.................................................................................38
Log Pages ...........................................................................................................39
Completion Status...............................................................................................41
LOG SENSE..............................................................................................................42
Command Descriptor Block.................................................................................42
The Parameter Pointer Field...............................................................................43
Log Pages ...........................................................................................................43
Supported Log Pages Log (00h) .........................................................................45
Write Error Counters Log (02h)...........................................................................46
Read Error Counters Log (03h)...........................................................................47
Sequential Access Device Log (0Ch)..................................................................47
Tape Alert Log (2Eh)...........................................................................................47
Tape Usage Log (30h) ........................................................................................48

Page vi LTO SCSI Interface Manual
Tape Capacity Log (31h).................................................................................... 49
Data Compression Log (32h) ............................................................................. 49
Completion Status .............................................................................................. 50
MODE SELECT ........................................................................................................ 51
Command Descriptor Block................................................................................ 51
Mode Select Parameters.................................................................................... 52
Mode Parameter Header.................................................................................... 53
Block Descriptor ................................................................................................. 54
Mode Parameter Pages...................................................................................... 55
Disconnect/Reconnect Page.............................................................................. 55
Control Mode Page............................................................................................. 56
Data Compression Control Page........................................................................ 57
Sequential Access Device Configuration Page .................................................. 58
Information Exceptions Mode Page.................................................................... 59
Drive Capabilities Control Mode Page................................................................ 60
Interface Control Mode Page.............................................................................. 61
Completion Status .............................................................................................. 63
MODE SENSE.......................................................................................................... 64
Command Descriptor Block................................................................................ 64
Mode Sense Data............................................................................................... 66
Mode Parameter Header.................................................................................... 66
Block Descriptor ................................................................................................. 68
Mode Parameter Pages...................................................................................... 69
Completion Status .............................................................................................. 69
PARK UNPARK ........................................................................................................ 70
Command Descriptor Block................................................................................ 70
Completion Status .............................................................................................. 70
PREVENT ALLOW MEDIA REMOVAL..................................................................... 71
Command Descriptor Block................................................................................ 71
Completion Status .............................................................................................. 72
READ........................................................................................................................ 73
Command Descriptor Block................................................................................ 73
Read Command Operation................................................................................. 75
Completion Status .............................................................................................. 78
READ BLOCK LIMITS .............................................................................................. 79
Command Descriptor Block................................................................................ 79
Block Limit Data.................................................................................................. 79
Completion Status .............................................................................................. 80
READ BUFFER......................................................................................................... 81
Command Descriptor Block................................................................................ 81

Contents Page vii
Read Buffer Descriptor........................................................................................82
MAM Page Definitions.........................................................................................82
Completion Status...............................................................................................83
READ POSITION.......................................................................................................84
Command Descriptor Block.................................................................................84
Read Position Data .............................................................................................84
Completion Status...............................................................................................88
RECEIVE DIAGNOSTIC RESULTS..........................................................................89
Command Descriptor Block.................................................................................89
Returned Data.....................................................................................................89
Completion Status...............................................................................................90
RELEASE UNIT.........................................................................................................91
Command Descriptor Blocks...............................................................................91
Completion Status...............................................................................................92
REPORT DENSITY SUPPORT.................................................................................93
Command Descriptor Block.................................................................................93
Report Density Support Data ..............................................................................93
Completion Status...............................................................................................95
REPORT LUNS .........................................................................................................96
Command Descriptor Block.................................................................................96
Report LUNS Data ..............................................................................................96
Completion Status...............................................................................................97
REQUEST SENSE ....................................................................................................98
Sense Data Management....................................................................................98
Command Descriptor Block.................................................................................98
Sense Data Format.............................................................................................99
Completion Status.............................................................................................107
RESERVE UNIT ......................................................................................................108
Command Descriptor Block...............................................................................108
Completion Status.............................................................................................109
REWIND ..................................................................................................................110
Command Descriptor Block...............................................................................110
Completion Status.............................................................................................110
SEND DIAGNOSTIC................................................................................................111
Command Descriptor Block...............................................................................111
Completion Status.............................................................................................111
SET CAPACITY.......................................................................................................112
Command Descriptor Block...............................................................................112
Completion Status.............................................................................................113
SPACE.....................................................................................................................114

Page viii LTO SCSI Interface Manual
Command Descriptor Block.............................................................................. 114
Space-by-Count Functions............................................................................... 115
Space to EOD................................................................................................... 115
Completion Status ............................................................................................ 116
TEST UNIT READY................................................................................................ 117
Command Descriptor Block.............................................................................. 117
Completion Status ............................................................................................ 117
VERIFY................................................................................................................... 118
Command Descriptor Block.............................................................................. 118
Verify Command Operation.............................................................................. 119
Completion Status ............................................................................................ 119
WRITE..................................................................................................................... 120
Command Descriptor Block.............................................................................. 120
Completion Status ............................................................................................ 121
WRITE BUFFER..................................................................................................... 122
Command Descriptor Block.............................................................................. 122
Write Buffer Data Header ................................................................................. 124
Completion Status ............................................................................................ 124
WRITE FILE MARKS.............................................................................................. 125
Command Descriptor Block.............................................................................. 125
Completion Status ............................................................................................ 126

Introduction Page 1
Introduction
The Seagate LTO drives are designed for computer environments requiring high
performance, ultra-high capacity data storage. LTO drives are available in 5.25-inch
internal configurations or as an external subsystem.
Seagate LTO drives contain an embedded Small Computer Systems Interface
(SCSI) controller. These drives provide synchronous or asynchronous SCSI and a
high speed burst synchronous data transfer rate of 80 Mbytes per second. The
internal drive is tailored for easy installation in today's computers and the full-
featured embedded SCSI controller facilitates easy integration into a variety of
systems.
About This Manual
The information in this manual applies specifically to the Viper 200 drive. For drive-
specific installation and operational information, including SCSI connection
information, refer to the Installation Guide or Product Description Manual for the
specific model of your drive.