z/OS DFSMSdss Storage Administration
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ADRTAPB data area

z/OS DFSMSdss Storage Administration
SC23-6868-01

Table 1. ADRTAPB Mapping Macro
OFFSET Type Len Name (Dim) Description
Dec Hex
Mapping of main prefix area (first thing in every record).
0 (0) STRUCTURE 16 ADRTAPB  
0 (0) CHARACTER 6 DTPSCHK  
0 (0) SIGNED 4 DTPSEQNO SEGMENT SEQUENCE NUMBER
4 (4) UNSIGNED 1 DTPNOSEG NUM OF SEGMENTS PER RECORD
5 (5) UNSIGNED 1 DTPSEGNO SEGMENT NUM OF RECORD
6 (6) UNSIGNED 2 DTPSEGLN SEGMENT LENGTH INCL PREFIX
8 (8) UNSIGNED 1 DTPPFXLN LENGTH OF PREFIX(CONSTANT 16)
9 (9) CHARACTER 1 DTPDMPID TYPE OF DUMP ID
1... ....   DTPFULD 80 - FULL DUMP
.1.. ....   DTPPARTD 40 - PARTIAL DUMP
..1. ....   DTPDASDD 20 - DATASET DUMP
...1 ....   DTPLOGCL 10 - LOGICAL DUMP - THIS BIT IS CALLED DTPCATDD IN V2.1, V2.2 - DTPLOGCL MUST BE 4TH. BIT IN STRUCTURE TO MAINTAIN COMPATIBILITY BETWEEN V2.1, V2.2 AND V2.3
.... 1111   * RESERVED - DO NOT USE LAST 4 BITS IN DTPDMPID TO ENSURE DOWNWARD COMPATIBILTY
10 (A) BIT(8) 1 DTPRCID1 RECORD IDENTIFIER 1
1... ....   DTPVHDR 80 - VOLUME HEADER (SEE DTVOL)
1... ....   DTPTHDR - TAPE HEADER (see DTHDR)
.1.. ....   DTPBTM 40 - MAP OF DUMPED TRKS (see DTBTMR)
.1.. ....   DTPDSNL - DS NAME/CATALOG LST (see DTLDSN)
..1. ....   DTPTRK0 20 - TRACK 0 (see DTTTRK)
..1. ....   DTPDSHDR - DATA SET HEADER (see DTDSHDR)
...1 ....   DTPVTOC 10 - VTOC TRACK (see DTTTRK)
...1 ....   DTPVOLD - VOLUME DEFINITION (see DTMVOL)
.... 1...   DTPDATA 08 - DATA TRACK (see DTTTRK)
.... .1..   DTPVTRLR 04 - VOLUME TRAILER (see DTRTLR)
.... .1..   DTPDTRLR - DS TRAILER (see DTRTLR)
.... ..1.   DTPVVDS 02 - VVDS TRACK (see DTTTRK)
.... ...1   DTPSPHDR 01 - SPHERE REC HEADER (see DTSPHERE)
11 (B) BIT(8) 1 DTPRCFL1 FLAG BYTE
    1... ....   DTPDDISP IF ON, DATA EQUAL TO LENGTH OF ADRTAPB HAS BEEN DISPLACED FROM THIS SEGMENT TO THE LAST SEGMENT OF THE TRACK
    .1.. ....   DTPDDDSP IF ON, LAST SEGMENT DISPLACED DATA MUST BE REPLACED FIRST (SEE DTPDDISP)
    ..1. ....   DTPENDNT 1=END OF NON-TRACK DATA SET (EG, CDF DATA SET OR VSAM DATA SET DUMPED BY VSAM I/O)
    ...1 ....   DTPENDKR 1=END OF A KEY RANGE FOR DS DUMPED BY VSAM I/O
.... 1...   DTPBWOE 1=BWODSN ONLY USED FOR DUMP OF DSET (OPEN DSET)
.... .1..   DTPDUMPC SOURCE FROM DUMPCOND VOL
.... ..1.   DTPSELFD SELF DESC RECORDS EXIST
.... ...1   * RESERVED
12 (C) CHARACTER 2 DTPVER# ADRTAPB VERSION NUMBER
14 (E) CHARACTER 2 * RESERVED
16 (10) CHARACTER 0 DTPBODY START OF REMAINDER OF RECORD
REST OF VOLUME HEADER RECORD (follows ADRTAPB).
0 (0) STRUCTURE 46 DTVOL  
0 (0) CHARACTER 4 DTVTOCB VTOC BEGINNING CCHH
4 (4) CHARACTER 4 DTVTOCE VTOC ENDING CCHH
8 (8) CHARACTER 4 DTVOLSZ VOLUME SIZE(DS4DEVSZ)
8 (8) UNSIGNED 2 DTVLOGCY # OF CYLINDERS IN VOLUME
10 (A) UNSIGNED 2 DTVTRKCY # OF TRACKS PER CYLINDER
12 (C) UNSIGNED 2 DTVBLKSZ MAXIMUM BLOCKSIZE
14 (E) UNSIGNED 2 DTVMAXCB MAXIMUM COMPRESS BUFFER IN WORDS
16 (10) CHARACTER 6 DTVSERL VOLUME SERIAL OF SOURCE VOL
22 (16) CHARACTER 1 DTVVTOCI VTOC INDICATORS
23 (17) CHARACTER 8 DTVTIMD DATE & TIME OF DAY OF DUMP
23 (17) CHARACTER 4 DTVDAY DATE - 00YYDDDC
27 (1B) CHARACTER 4 DTVTIME TIME OF DAY IN DECIMAL
31 (1F) CHARACTER 4 DTVDEVTY DEVTYP OF VOLUME(UCBTBYT4)
35 (23) UNSIGNED 1 DTVMODNO MODEL NUMBER
36 (24) BIT(8) 1 DTVIND1 VOLUME TYPE INDICATORS
1... ....   DTVVIRT 80 - VIRTUAL VOLUME
.1.. ....   DTVMINI 40 - MINI DISK
..1. ....   DTVCVAF 20 - VOLUME HAS INDEXED VTOC
...1 ....   DTVCPVOL 10 - CP volume fmt
.... 1...   DTVFCMP 08 - FILE COMPRESSED
.... .1..   DTVUNLCD 04 - UNALLOCATED SPACE DUMPED
.... ..1.   DTVLVF 02 - OTHER LOGICAL VOLUMES MAY FOLLOW THIS LOGICAL VOLUME
.... ...1   DTVVVDS 01 - VVDS DATASET DUMPED BEFORE VTOC
37 (25) UNSIGNED 2 DTVBMSZ BITMAP SIZE IN WORDS
39 (27) BIT(8) 1 DTVIND2 VOLUME TYPE INDICATORS
1... ....   DTVLNVI 80-NONVSAM DATA SETS NOT ON VOLUME
.1.. ....   DTVLVI 40-VSAM DATA SETS NOT ON VOLUME
..1. ....   DTVGNVI 20-NONVSAM DATA SETS NOT ON ANY VOLUME
...1 ....   DTVGVI 10-VSAM DATA SETS NOT ON ANY VOLUME
.... 1...   DTVSMS SOURCE VOLUME IS SMS MANAGED
.... .1..   DTVSMSI SOURCE VOL IS SMS INITIAL STAGE
.... ..1.   DTVFHCMP HARDWARE COMPRESS USED
.... ...1   * UNUSED
40 (28) UNSIGNED 2 DTVLEN LEN OF HEADER (SEGMENT LEN - PREFIX
42 (2A) UNSIGNED 1 DTVVERNO DFDSS VERSION NUMBER
43 (2B) UNSIGNED 1 DTVLVLNO DFDSS MODIFIC. NUMBER
44 (2C) UNSIGNED 1 DTVVXTNO NUMBER OF VVDS EXTENTS
45 (2D) UNSIGNED 1 DTVVXTOF OFFSET TO VVDS EXTENT
Mapping of additional volume information (follows DTVOL).
0 (0) STRUCTURE *   DTVEND FIELDS FROM DTVOL START
0 (0) CHARACTER 0 *  
Mapping of VVDS extents (in DTVEND).
0 (0) STRUCTURE 10 DTVVXTNT(*) VVDS EXTENTS, IN DSCB FORMAT
0 (0) CHARACTER 10 DTVVXLEN  
REST OF LOG DATA SET DUMP TAPE HEADER (follows ADRTAPB).
0 (0) STRUCTURE 18 DTHDR  
0 (0) CHARACTER 8 DTHTIMD DATE & TIME/DAY OF DUMP
0 (0) CHARACTER 4 DTHDAY DAY
4 (4) CHARACTER 4 DTHTIME TIME
8 (8) CHARACTER 1 DTHIND2 DATA SET TYPE INDICATORS
1... ....   DTHGNVI NO NON-VSAM DATA SETS
.1.. ....   DTHGVI NO VSAM DATA SETS
..1. ....   DTHGT64K ON=MORE THAN 65535 DATA SETS ON VOLUME
...1 1111   * RESERVED
9 (9) UNSIGNED 2 DTHLEN HEADER LEN
11 (B) UNSIGNED 1 DTHVERNO DFDSS VERSION NUMBER
12 (C) UNSIGNED 1 DTHLVLNO DFDSS MODIFIC. NUMBER
13 (D) UNSIGNED 2 DTHBLKSZ MAX BLKSIZE
15 (F) UNSIGNED 2 DTHNDS # DS IN LIST
17 (11) CHARACTER 1 DTHIND1 INDICATORS
1... ....   DTHFCMP FILE COMPRESSED
.1.. ....   DTHUNLCD UNALLOCATED SPACE DUMPED
..1. ....   DTHSFER SPHERE OPTION
...1 ....   DTHFHCMP HARDWARE COMPRESSION
.... 1...   DTHEFSAM EF SAM DS HAVE DTTTRK
.... .111   * RESERVED
REST OF DATA SET NAME/CATALOG LIST (follows ADRTAPB).
0 (0) STRUCTURE 45 DTLDSN  
0 (0) UNSIGNED 1 DTLLEN LENGTH OF DATA SET NAME
1 (1) CHARACTER 44 DTLCAT CATALOG NAME
REST OF DATA SET HEADER RECORD (follows ADRTAPB).
0 (0) STRUCTURE 106 DTDSHDR  
0 (0) UNSIGNED 1 DTDLEN LENGTH OF DATA SET NAME
1 (1) UNSIGNED 1 DTDCATLN LENGTH OF CATALOG NAME
2 (2) CHARACTER 2 DTDDSORG DATA SET ORGA (FROM F1)
4 (4) CHARACTER 1 DTDOPTCD DS OPTION CODE (FROM F1)
5 (5) CHARACTER 1 DTDNVOL NUMBER VOLS FOR DATA SET
6 (6) BIT(8) 1 DTDIND DATA SET INDICATOR
1... ....   DTDIPWD PASSWORD SUPPLIED 1=YES
.1.. ....   DTDTPWD TYPE PASSWORD 0=D.S. 1=CATALOG
..1. ....   DTDIRACF RACF® PROFILE
...1 1...   DTDRACFP RACF PROFILE FLAGS
...1 ....   DTDRACFD 1 = RACF DISCRETE PROFILE
.... 1...   DTDRACFG 1 = RACF GENERIC PROFILE
.... .1..   DTDALIAS 1 = USER CATALOG ALIAS
.... ..1.   DTDSPER 1 = SPHERE RECORD FOLLOWS
.... ...1   DTDSMS 1=SMS MANAGED DATA SET
7 (7) CHARACTER 8 DTDPWD PASSWORD
15 (F) CHARACTER 44 DTDCAT CATALOG NAME
59 (3B) CHARACTER 44 DTDDSN DATA SET NAME
103 (67) CHARACTER 2 DTDVOLCT SMS VOL CNT (FROM BCS)
103 (67) UNSIGNED 1 DTDVCTD VOLCOUNT FOR DATA COMPONENT OR NONVSAM DATA SET
104 (68) UNSIGNED 1 DTDVCTI VOLCOUNT FOR INDEX COMPONENT OR ZERO FOR NO INDEX
105 (69) CHARACTER 1 DTDIND2 DATA SET INDICATOR 2
1... ....   DTDAIXSP AIX® & PART OF A SPHERE
.1.. ....   DTDCDF 1=COMMON DATA FORMAT DSET
..1. ....   DTDPDSE 1=PDSE DATA SET
...1 ....   DTDNTALL 1=DUMPED WITHOUT USING ALLD OR ALLX
.... 1...   DTDSAI 1=DS ADTL INFO
.... .1..   DTDNOIDX 1=VSAM INDEXED DATA SET DUMPED USING VALIDATE OPTION (INDEX NOT DUMPED, DATA CI'S IN ORDER)
.... ..1.   DTDPDSET 1=PDSE DUMPED AS TRACK IMAGES
.... ...1   DTDSDM USE SYSTEM DATA MOVER
Mapping of sphere information (in DTSAIXS).
SPHERE RECORD FOR CATALOG FILTER DUMP (follows ADRTAPB).
0 (0) STRUCTURE 4 DTSPHERE  
0 (0) SIGNED 4 DTSLEN LENGTH OF SPHERE RECORD
0 (0) STRUCTURE 102 DTSINFO SPHERE INFORMATION
0 (0) CHARACTER 44 DTSAIXNM AIX NAME
44 (2C) CHARACTER 44 DTSPATHN PATH NAME
88 (58) CHARACTER 1 DTSPATHA PATH ATTRIBUTE
89 (59) BIT(8) 1 DTSPATHF PATH INFO FLAG
1... ....   DTSPATHI IF SET, PATH OWNERID IS CONTAINED IN THIS BLOCK (SEE DTSPTHON FOR DESCRIPTION)
.1.. ....   DTSPATHE PATH EXPIRATION DATE IS CONTAINED IN THIS BLOCK (SEE DTSPTHEP FOR DESCRIPTION). IF NOT SET, IGNORE THE EXPIR FIELDS.
..1. ....   DTSPATHP PATH HAS PASSWORD THAT IS CONTAINED IN THIS BLOCK (SEE DTSEXPIR FOR DESCRIPTION). IF EXISTS, BEGINS AT DTSPATHD.
...1 1...   DTSPRACF PATH RACF FLAGS
...1 ....   DTSRACFD 1=DISCRETE PROFILE
.... 1...   DTSRACFG 1=GENERIC PROFILE
.... .111   * NOT USED
90 (5A) CHARACTER 8 DTSPTHON FORMAT OF OWNERID
98 (62) CHARACTER 4 DTSPTHEP EXPIRATION DATE FORMAT:
98 (62) CHARACTER 3 DTSEXPIR YYDDDF FORMAT
98 (62) UNSIGNED 1 DTSEYEAR YY 8 BIT IN DECIM
99 (63) UNSIGNED 2 DTSERDAY 12-BITS DAY OF IN DECIMAL & 4-BIT SIGN CHAR THAT ALLOWS TO BE UNPACKED
101 (65) UNSIGNED 1 DTSEXCNY CENTURY BYTE IN DECIMAL
Mapping of security info table (in DTSPATHD) .
0 (0) STRUCTURE 52 DTSPASSW SECURITY INFO TABLE
0 (0) CHARACTER 8 DTSMSTRP MASTER PASSWORD. MUST HAVE IN ORDER TO HAVE ANY OTHER PASSWORDS.
8 (8) CHARACTER 8 DTSCNTLP CONTROL INTERVAL PASSWORD
16 (10) CHARACTER 8 DTSUPDAT UPDATE PASSWORD
24 (18) CHARACTER 8 DTSREADP READ PASSWORD
32 (20) CHARACTER 8 DTSCODEN CODE NAME
40 (28) SIGNED 2 DTSNUMAT NUMBER OF ATTEMPTS
42 (2A) CHARACTER 8 DTSAUTNM ADDR OF AUTHORIZATION MOD
50 (32) SIGNED 2 DTSAUTHR AUTHORIZATION REC LENGTH
COMMON DATA FORMAT DATA SET ATTRIBUTES (follows DTDSHDR).
0 (0) STRUCTURE 64 DTCDFATT CDF ATTRIBUTE
0 (0) SIGNED 4 DTCHURPN HIGH USED PAGE NUMBER
4 (4) CHARACTER 1 DTCDFIND CDF flags
1... ....   DTDPDSEX PDSEX flag
5 (5) CHARACTER 3 * RESERVED FOR FUTURE
8 (8) UNSIGNED 4 DTC#DIRB DIRECTORY BLOCK CNT
12 (C) CHARACTER 52 * RESERVED FOR FUTURE
64 (40) CHARACTER 0 * LAST
Mapping for additional data (follows DTCDFATT).
0 (0) STRUCTURE * DTDSAIR  
0 (0) SIGNED 4 DTDSAIDL ADD. DATA LENGTH
4 (4) CHARACTER * DTDSAID ADD. DATA FOLLOWS
REST OF VOLUME DEFINITION RECORD (follows ADRTAPB).
0 (0) STRUCTURE 28 DTMVOL  
0 (0) CHARACTER 6 DTMVSERL VOLUME SERIAL ID
6 (6) CHARACTER 4 DTMDEVTY DEVTYPE (UCBTBYT4)
10 (A) CHARACTER 2 * SLACK FILLER
12 (C) CHARACTER 8 DTMVOLSZ VOLUME SIZE (DS4DEVSZ)
12 (C) UNSIGNED 4 DTMTRKCP #BYTES/TRK (TRACK CAPACITY WITH OVERHEAD).
16 (10) UNSIGNED 2 DTMLOGCY # CYLINDERS PER VOLUME
18 (12) UNSIGNED 2 DTMTRKCY # TRACKS PER VOLUME
20 (14) UNSIGNED 2 DTMMAXCB MAX COMPRESS BUF IN WORDS
22 (16) CHARACTER 2 DTMIND VOLUME INDICAT
1... ....   DTMVIRT VIRTUAL VOLUME
.1.. ....   DTMMINI MINI VOLUME
..1. ....   DTMCVAF VOLUME HAS INDEXED VTOC
...1 ....   DTMTIME Time stamp follows VVR
.... 1...   DTMBWOT RLS time stamps are BWO
22 (16) BIT(11) POS(6) 2 * unused
24 (18) UNSIGNED 1 DTM#VVRS # OF VVRS/NVRS DUMPED
25 (19) UNSIGNED 1 DTM#DSCB # OF DSCBS DUMPED
26 (1A) UNSIGNED 1 DTM#EXT # OF EXTENTS DUMPED
27 (1B) CHARACTER 1 DTMMODNO MODEL NUMBER
Mapping of the DSCBs, extents and VVRs (follows DTMVOL).
0 (0) STRUCTURE * DTMVDATA DSCBS (1&2) FOR DS, FOLLOWED BY EXTENT LIST, FOLLOWED BY VVRS OR NVR DATA SET CLUSTER.
0 (0) CHARACTER 0 *  
REST OF RECORD THAT MAPS THE TRACKS DUMPED (follows ADRTAPB).
0 (0) STRUCTURE 12 DTBTMR  
0 (0) CHARACTER 12 DTBHDR RESERVED
0 (0) CHARACTER 4 DTBBMID ID OF THE BLOCK = BMBB
4 (4) SIGNED 4 DTBADDR @ OF NEXT BMBB SEGMENT COPIED FROM ADRBMB BLOCK
8 (8) UNSIGNED 4 DTBTRK# # OF TRKS MAPPED IN BMBB SEGMENT
8 (8) UNSIGNED 2 DTBTRK#P # OF TRKS MAPPED IN BMBB SEGMENT
10 (A) CHARACTER 2 * RESERVED
Mapping of the bitmap data (follows DTBTMR).
0 (0) STRUCTURE * DTBBITM BITMAP
0 (0) CHARACTER 0 *  
REST OF TRACK RECORD (follows ADRTAPB). The first segment of the track is preceded by DTTTRK. The second and subsequent track segments are not preceded by DTTTR, but are preceded by ADRTAPB. The remaining track image data begins immediately after ADRTAPB .
0 (0) STRUCTURE 24 DTTTRK MAPS THE TRACK
0 (0) CHARACTER 16 DTTHDR HEADER FOR EACH TRACK SEGMENT
0 (0) UNSIGNED 2 DTTTRKLN LENGTH OF DATA ON TRK
2 (2) CHARACTER 1 DTTTRKID TRACK INDICATORS
1... ....   DTTIOER I/O ERROR ON TRACK
.1.. ....   DTTTROVF LAST REC ON TRK IS OVFLO REC (maintained for restore compatibility only, do not set)
..1. ....   DTTTCMP IF ON, TRACK COMPRESSED
...1 ....   DTTVFRST FIRST VVDS RECORD
.... 1...   DTTINVT INVALID TRACK FORMAT
.... .1..   DTTSTAT USER STATISTICAL RECORD
3 (3) UNSIGNED 4 DTTCCHH CCHH OF TRACK 2@SVD
7 (7) SIGNED 4 DTTLRCNT LR COUNT FOR THE DS (THIS FIELD IS FILLED IN ON THE LAST DATA CA TRACKS FOR A VS DUMPED BY VSAM I/O)
11 (B) UNSIGNED 1 DTTXDLEN EXTRA ENC DATA LEN
12 (C) CHARACTER 4 * RESERVED
16 (10) CHARACTER 8 DTTR0DAT RCRD 0 DATA, ONLY ON 1ST SEG
24 (18) CHARACTER 0 DTTBODY R1- RN RECORDS ON TRACK
Count field format (in track image data).
0 (0) STRUCTURE 8 DTTCKD CNT, KEY & DATA FIELDS ON TRK
0 (0) CHARACTER 8 DTTCNT COUNT FIELD
0 (0) CHARACTER 5 DTTCCHHR CCHHR OF RECORD
0 (0) UNSIGNED 4 DTTCCCHH CCHH OF RECORD 2@SVD
4 (4) UNSIGNED 1 DTTCRCRD R OF RECORD
5 (5) UNSIGNED 1 DTTKELEN KEY LENGTH
6 (6) UNSIGNED 2 DTTDATLN DATA LENGTH
Key or Data field mapping (follows count field).
0 (0) STRUCTURE * DTTKD KEY AND DATA FIELDS
0 (0) CHARACTER 0 *  
REST OF RECORD THAT MAPS THE TRAILER RECORD (follows ADRTAPB).
0 (0) STRUCTURE 6 DTRTLR  
0 (0) CHARACTER 6 DTRSERL VOLUME SERIAL OF FILE (USED FOR PHYSICAL DUMP ONLY) V26
0 (0) SIGNED 4 DTRRECNT NUMBER OF LOGICAL RECORDS DUMPED (USED FOR LOGICAL DATA SET DUMP ONLY) V26
4 (4) CHARACTER 2 * RESERVED - LOGICAL DUMP
0 (0) STRUCTURE 4 DTSDHDR  
0 (0) UNSIGNED 2 DTSDLEN LEN OF SELF DESC REC
2 (2) CHARACTER 1 DTSDTYPE TYPE OF SELF DSC REC
3 (3) CHARACTER 1 DTSDIND1 SELF DESC REC FLAGS
1... ....   DTSDLAST LAST SELF DESC REC
.111 1111   * RESERVED
4 (4) CHARACTER 0 DTSDEND START SELF DESC REC ON A WORD BOUNDARY
0 (0) STRUCTURE 356 DTCIPHB CIPHER BLOCK
0 (0) CHARACTER 1 DTCFLAG1 ENCRYPTION TYPES
1... ....   DTCCTDES CLRTDES
.1.. ....   DTCCA128 CLRAES128
..1. ....   DTCETDES ENCTDES
...1 1111   * RESERVED
1 (1) CHARACTER 3 * RESERVED
4 (4) CHARACTER 16 DTCDATAS SAMPLE DATA
20 (14) CHARACTER 64 DTCRSAL RSA LABEL
84 (54) CHARACTER 256 DTCRDKL RSA CIPHD DATA LABEL
340 (154) SIGNED 4 DTCICNT ITERATION COUNT
344 (158) CHARACTER 8 DTCSALT SALT FOR ADRPWKEY
352 (160) SIGNED 4 DTCRDKLN RSA CIPHD DATA LAB LN@DDE
COMPRESSION DICTIONARY BLOCK. Immediately follows a self-describing record header
0 (0) STRUCTURE 16 DTCDCT FOLLOWS A DTSDHDR
0 (0) CHARACTER 16 DTCFLDS  
0 (0) SIGNED 4 DTCMAXD MAX DICT SIZE
4 (4) CHARACTER 12 * RESERVED
0 (0) STRUCTURE * DTCDICT EXPANSION DICTIONARY AFTER DTCDCT
0 (0) CHARACTER 0 * AREA
EXTENDED VOLUME RECORD FOUND IN FIRST TAPE RECORD
0 (0) STRUCTURE 52 DTSDEVOL EXTENDED VOL SD REC
0 (0) SIGNED 4 DTELOGCYL # OF CYLINDERS - EAV
4 (4) UNSIGNED 2 DTELCYL LARGE UNIT REGION
6 (6) CHARACTER 2 * RESERVED
8 (8) UNSIGNED 4 DTCBITM# SIZE OF CHUNK MAP
12 (C) CHARACTER 4 * RESERVED
16 (10) UNSIGNED 8 DTEVBLOCKSIZE OUTPUT BLOCKSIZE
16 (10) UNSIGNED 4 DTEVHIBLKSZ HIGH WORD BLKSIZE
20 (14) UNSIGNED 4 DTEVBLKSZ LOW WORD BLKSIZE WHEN DTVBLKSZ=X'FFFE'
24 (18) BIT(8) 1 DTEFLGS EXT VOLUME FLAG BYTE
    1… ….   DTERESET RESET SPECIFIED ON DUMP
Start of change End of change Start of change End of change Start of change.1.. ….End of change Start of change End of change Start of changeDTECYLMGEnd of change Start of changeCYLINDER MANAGED SPACEEnd of change
Start of change End of change Start of change End of change Start of change..1. ….End of change Start of change End of change Start of changeDTEVZCOMPEnd of change Start of changeZCOMPRESS SPECIFIEDEnd of change
Start of change End of change Start of change End of change Start of change...1 1111End of change Start of change End of change Start of change*End of change Start of changeRESERVEDEnd of change
25 (19) CHARACTER 27 * RESERVED
EXTENDED TAPE RECORD FOUND IN FIRST TAPE RECORD
0 (0) STRUCTURE 52 DTSDEHDR EXT TAPE SD RECORD
0 (0) UNSIGNED 8 DTEHBLOCKSIZE OUTPUT BLOCKSIZE
0 (0) UNSIGNED 4 DTEHHIBLKSZ HIGH WORD BLKSIZE
4 (4) UNSIGNED 4 DTEHBLKSZ LOW WORD BLKSIZE WHEN DTHBLKSZ=X'FFFE'
Start of change8End of change Start of change(8)End of change Start of changeBIT(8) End of change Start of change1End of change Start of changeDTETFLGSEnd of change Start of changeEXT TAPE FLAG BYTEEnd of change
Start of change End of change Start of change End of change Start of change1… ….End of change Start of change End of change Start of changeDTETZCOMPEnd of change Start of changeZCOMPRESS SPECIFIEDEnd of change
Start of change9End of change Start of change(9)End of change Start of changeCHARACTEREnd of change Start of change43End of change Start of change*End of change Start of changeRESERVEDEnd of change
 
0 (0) STRUCTURE 64 BFRPREFX BUFFER PREFIX AREA@V22H
0 (0) UNSIGNED 2 BPSCOC OFFSET IN BUFFER FROM BEGINNING OF R0 DATA TO COUNT FIELD IN ERROR
2 (2) UNSIGNED 2 BPSCOD OFFSET IN BUFFER FROM BEGINNING OF R0 DATA TO DATA FIELD IN ERROR
4 (4) SIGNED 4 BPHWMRK ADDRESS OF NEXT AVAILABLE BYTE (HIGH WATER MARK OF USED STORAGE)
8 (8) CHARACTER 56 BPWORKA WORK AREA FOR OPTIMIZE@V22H
64 (40)   0 BPBODY LOCATION OF REST OF BUFFER
 
0 (0) STRUCTURE * DSAUTHR AUTHORIZATION RECORD.
0 (0) CHARACTER 0 *  
0 (0) STRUCTURE 68 DTCHKSUM CHECKSUM RECORD
0 (0) CHARACTER 1 DTCKTYPE TYPE OF CHECKSUM
    1... ....   DTCK_MD5 MD5 HASH
    .111 1111   * UNUSED
1 (1) CHARACTER 3 * UNUSED
4 (4) CHARACTER 64 DTCKHASH HASH VALUE
4 (4) CHARACTER 16 DTCK_MD5HASH MD5 HASH VALUE
 
0 (0) STRUCTURE * DTLDSCMP COMPRESSED DATA SET NAME
0 (0) CHARACTER 0 *
Mapping of sphere information (in DTSAIXS).
0 (0) STRUCTURE * DTSAIXS AIX SPHERE INFO
0 (0) CHARACTER 0 *  
0 (0) STRUCTURE * DTSPATHD START PATH SECURITY INFO
0 (0) CHARACTER 0 *  

Self-Describing Record constants
CIPHER BLOCK RECORD
"1" "CHAR HEX" "01" DTSDCIPH CIPHER BLOCK SD REC
COMPRESSION DICTIONARY RECORD
"1" "CHAR HEX" "02" DTSDCDCT COMPRESSION DICT SELF-DESC REC TYPE
EXTENDED ADDRESSABLE VOLUME RECORD
"1" "CHAR HEX" "03" DTSDVOLE EXTENDED VOLUME SELF-DESC REC TYPE
EXTENDED DATA SET RECORD
"1" "CHAR HEX" "04" DTSDHDRE TAPE HDR EXTENSION SELF-DESC REC TYPE
CHECKSUM RECORD
"1" "CHAR HEX" "05" DTSDCHKSUM CHECKSUM SELF-DESC REC TYPE
"2" "DECIMAL" "1" DTPVERC Version
Parent topic: Format of the DFSMSdss dump data set

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