Foreword
1 Introduction
1.1 Scope, purpose and application
1.2 Purpose
1.3 Application
2 References
2.1 American National Standards
2.2 Other standards
3 Definitions
4 Acronyms
5 Environment and safety
5.1 Testing environment
5.2 Operating environment
5.3 Storage environment
5.4 Safety
5.5 Test methods
6 Tape characteristics
6.1 Materials
6.2 Tape width and tolerance
6.3 Width fluctuation
6.4 Reference edge straightness
6.5 Total tape thickness
6.6 Discontinuity
6.7 Longitudinal curvature
6.8 Leaders, trailers and splices
6.9 Layer-to-layer adhesion
6.10 Coating adhesion
6.11 Offset yield strength
6.12 Tensile yield force
6.13 Residual elongation
6.14 Tape cupping
6.15 Transmissivity
6.16 Inhibitor tape
7 Magnetic and electrical properties
7.1 Magnetic coating
7.2 Average signal amplitude
7.3 Signal dropout
7.4 Particle orientation
7.5 Coercivity
7.6 Electrical resistance
8 Cassette characteristics
8.1 General description
8.2 Cassette dimensions
8.3 Identification and length of cassettes
8.4 Face of magnetic coating
8.5 Datum planes
8.6 Windows and labels
8.7 Identification holes
8.8 Reels
9 Track geometry
9.1 Dimensions and tolerances
9.2 Head gap azimuth
9.3 Helical track curvature
9.4 Longitudinal tracks
10 Overview of format constructs
10.1 Partition
10.2 System zone
10.3 End-of-recording considerations
10.4 Addressing scheme
10.5 Formatting a cassette
10.6 Volume and partition initialization
10.7 Read verify and rewrite
10.8 Append write only
11 Recorded format
12 Longitudinal track format
12.1 Recording method
12.2 Longitudinal sync word
12.3 Servo track (SVT)
12.4 Physical address track segment (PATS) and longitudinal
address track segment (LATS) formats
12.5 Physical address track segment (PATS) definitions
12.6 Logical address track
12.7 LATS data field definitions
13 Helical format
13.1 Helical track content
13.2 Helical channel
13.3 Serialization
14 Logical format data fields
14.1 Format identifier (FID)
14.2 Zone type (ZNTY)
14.3 Partition identifier (PTID)
14.4 System zone identifier (SZID)
14.5 File section number (FSN)
14.6 First data block or byte number (FDBN)
14.7 Data block or byte (DBB)
14.8 Data block checksum enable (DCSE)
14.9 End-of-media warning flag (EMWF)
14.10 Data block size (DBS)
14.11 Total byte count (TBC)
14.12 Physical-block sequence tag (PBST)
14.13 Rewrite enable (RWEN)
14.14 Remaining rewrite count (RRWC)
14.15 Cumulative data block or byte number (CDBN)
14.16 Absolute double-frame number (ADFN)
14.17 Helical track type (HTTY)
14.18 Helical track number (HTKN)
14.19 Sub block CRC inverted (SABCI)
14.20 Partition layout option (PTLO)
14.21 System zone size (SZSZ)
14.22 System zone spacing (SZSP)
14.23 Partition group A size (PGAS)
14.24 Partition group A count (PGAC)
14.25 Partition group B size (PGBS)
14.26 Partition group B count (PGBC)
14.27 Vendor identifier (VNID)
14.28 Last double-frame number (LDFN)
14.29 Last valid system zone (LVSZ)
14.30 Last valid partition (LVPT)
14.31 Volume identifier (VLID)
15 Helical track and double-frame types
15.1 Helical track types
15.2 Types of double-frame
16 Logical format
16.1 Logical layer overview
16.2 Logical entities
16.3 Volume format information (VFI)
16.4 Volume initialization requirements
16.5 Pre-formatted tape
Annexes
A Summary of formatted helical track array
B Summary of helical and longitudinal recording format
C Summary of PATS and LATS contents
D Helical track content - data physical-block double-frame
E Method of measuring recording tape abrasivity