StorageTek Host Software Component 6.0, Руководство системного программиста

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Chapter 3. HSC Control Statements and HSC Start Procedure 105
1st ed., 6/30/04 - 312579601
(UNITDEF) Command and Control Statement” on page 140 for control statement
syntax, parameter information, and example statements.
Volume Attribute
The VOLATTR control statement specifies tape volume attributes. Refer to “Volume
Attribute (VOLATTR) Control Statement” on page 143 for control statement syntax,
parameter information, and example statements.
Volume Attribute Definition
The VOLDEF command and control statement identifies the definition data set
where the tape volume attributes can be found (see VOLATTR). VOLDEF can be
issued either in PARMLIB or as an operator command. Refer to “Volume Attribute
Definition (VOLDEF) Command and Control Statement” on page 154 for control
statement syntax, parameter information, and example statements.
Defining LMU Network Connections
LMUPATH statements allow users to define LMU network TCP/IP attachments. Network
addresses can be specified by host name or LMU IP address.
Defining Tape Request Attributes (TAPEREQ)
TAPEREQ statements describe the media type and recording technique to be used for a
particular data set.
TAPEREQ parameters are divided into selection criteria (inputs) and result criteria
(outputs). Selection criteria include:
• job name
• step name
• program name (MVS JES2 only)
• data set name
• expiration date or retention period (MVS JES2 only)
• volume type requested (specific or nonspecific).
Result criteria include:
• media type
• recording technique
• model
• subpool.
Collections of data sets with common characteristics can be identified in a single
TAPEREQ statement by specifying wild card characters. For example, if all data sets
residing on ECARTs are identified with an ‘‘L’’ as the first character of the data set name,
an ‘‘L**’’ could be specified to identify all these data sets in a single TAPEREQ
statement.
The TREQDEF command causes the HSC to open the definition data set containing the
TAPEREQ statements. See “Tape Request Definition (TREQDEF) Command and Control
Statement” on page 133 and “Tape Request (TAPEREQ) Control Statement” on page 118
for descriptions of syntax and parameters.