Seagate STT8000A - Manual (Page 7)

Table of Contents
STT8000A Product Manual Page vii
Mode Parameter Header ................................................................................ 49
Mode Block Descriptor.................................................................................... 49
Mode Medium Partition Page.......................................................................... 50
Mode Capabilities and Mechanical Status Page .............................................. 50
Mode Tape Parameters Page ......................................................................... 51
Read command .................................................................................................... 52
Read Position command ....................................................................................... 53
Request Sense command ..................................................................................... 55
Rewind command ................................................................................................. 57
Space command................................................................................................... 58
Test Unit Ready command.................................................................................... 59
Write command .................................................................................................... 60
Write Filemark command ...................................................................................... 61
Write Buffer (download microcode) command ....................................................... 62
Tape format 63
Introduction........................................................................................................... 63
Tape partitioning ................................................................................................... 63
Track positions ..................................................................................................... 63
Track numbering................................................................................................... 64
Track format ......................................................................................................... 64
Frames........................................................................................................... 64
Blocks ............................................................................................................ 66
Tape reference servo pattern ................................................................................ 66
Write equalization ................................................................................................. 67
Randomization...................................................................................................... 67
Theory of operations 69
Overview .............................................................................................................. 69
Block diagram ....................................................................................................... 69
Mechanics ............................................................................................................ 70
Cartridge load mechanism .............................................................................. 70
Capstan drive motor assembly........................................................................ 70
Chassis .......................................................................................................... 70
Control circuits ...................................................................................................... 71
Head design ......................................................................................................... 71
Flash EEPROM .................................................................................................... 71
Sensors and switches ........................................................................................... 71
Media—Travan minicartridges............................................................................... 72