ARCRDEXT Unlike Attribute Array

The unlike attribute array contains entries for each candidate volume in the candidate volume list with unlike attributes. Each entry indicates the attributes of the volume and the volume's unit type.

Table 1 shows the fields and offsets for an unlike attribute array list entry.

Table 1. Unlike Attribute Array List Entry
Offset	Length or Bit Pattern	Description
00 (X'00')	4	A 4-byte area containing the UCB device type.
04 (X'04')	1	A 1-byte DFSMShsm volume attribute flag. The bits are: 1... .... AUTOMIGRATION is specified on some processing units. 0... .... NOAUTOMIGRATION is specified on some processing units. .1.. .... AUTOBACKUP is specified on some processing units. .0.. .... NOAUTOBACKUP is specified on all processing units. ..1. .... BACKUPDEVICECATEGORY with TAPE or DASD is specified on the ADDVOL command. (The next bit indicates the keyword that was specified.) ..0. .... BACKUPDEVICECATEGORY(NONE) is specified on the ADDVOL command. ...1 .... BACKUPDEVICECATEGORY(TAPE) is specified on the ADDVOL command. ...0 .... BACKUPDEVICECATEGORY(DASD) is specified on the ADDVOL command.
05 (X'05')	3	Reserved.