HP NonStop G-Series - Manual (Page 126)

Storage Server Interface (SSI) to the Tape Library
Control Path
DSM/Tape Catalog User’s Guide — 520233-008
8 - 2
Run-Time Configuration
The $ZSSI subsystem also logs EMS events. See the DSM/Tape Catalog Messages
Manual.
Run-Time Configuration
$ZSSI uses the NonStop TCP/IP socket interface to access its host name and IP
address and also the host name and IP address of the ACSLS library server that is
running the CSI. To use the TCP/IP socket interface, $ZSSI needs the name of the
TCP/IP process. If the TCP/IP process on the NonStop server is named anything other
than $ZTC0, the name of the process must be passed to $ZSSI.
The TCP/IP socket interface requires the correct host name be assigned during its
startup and requires that the application PARAM variables specify how to resolve
names. The information required by TCP/IP is typically set in the PARAM variables of
the application. Because $ZSSI is started by $ZSVR, this information must be passed
to $ZSVR so $ZSVR can pass it along to $ZSSI.
The name of the $ZSSI program and the name of the $ZSSI process are known by
$ZSVR and do not have to be passed to it.
Environment Variables
The following PARAMs and DEFINEs are used to configure $ZSSI:
Command Description
Dismount Dismounts a tape cartridge from a tape library drive
Eject Ejects one or more tape cartridges from the tape library
Mount Mounts a tape cartridge on a specified tape library drive
Query Mount Returns mount status information for queried tape cartridges
Query Volume Returns volume status information for queried tape cartridges
PARAM name Description
CSI^HOSTNAME Required; defines the DNS host name or IP address of the
server on which the CSI is running. $ZSSI uses it to
communicate through TCP/IP with the CSI.
SSI^CLIENT^PORT^NUM Optional; If present, SSI uses this port to start communication
with the SUN server on the Tandem side. Otherwise, SSI uses
random port to start the communication.
TCPIP^PROCESS^NAME Optional; used to identify the TCP/IP process name. If the
PARAM is not set, the process name $ZTC0 is assumed.
TCPIP^RESOLVER^NAME Optional; overrides the default resolver configuration file
$SYSTEM.ZTCPIP.RESCONF. The Domain Name resolver
uses information in the RESCONF file to access a name server.
For more information, see the TCP/IP Applications User Guide.