ANSI INCITS 328 : 2000

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

Ascertains the requirements for DD-2 digital data storage cassettes to be used for information interchange between information processing systems.