2.1 DECwindow setup

Menu item: MEDIA MOTIF Work Center Menu command: @MEDIA_LIBRARY:MEDX_MOTIF option

The "option" can be MEDIA, BCKMGR, VAULT, SEARCH or ENTIRE. This selects the first display that comes up. By creating one entry for each option a separate process will be created for each.

2.2 Cluster installation

$ @SYS$STARTUP:MEDIA_STARTUP NEWVERSION

If this is the FIRST TIME the system is installed, leave off the NEWVERSION in the above command.

2.3 Moving the MEDIA database

All files that make up the MEDIA database are located using one logical name, MEDIA_LIBRARY:. This logical is defined in the startup file MEDIA_STARTUP.COM in the SYS_$MANAGER: directory. To move the database, do the following steps.

• Stop all MEDIA activity on all nodes.
• Move or copy the files to the new location.
• Edit the MEDIA_STARTUP.COM file to define the new location.
• Restart all the MEDIA servers.

There are some execptions to this sequence. If you have define the parameter BGR_CENTRAL, CENTRAL, SVR_HOME or SVR_CENTRAL then some of the files will be in the locations defined by these variables.

2.4 Program and data files

The MEDIA system uses the following files. All these files are contained in the MEDIA_LIBRARY: directory unless otherwise noted².

Function	File name
VAULT subsystem files	VAULT_[VAX|AXP].EXE
	VAULT.HLP
	VAULT_REBUILD.COM
	*.ADR
Function	File name
BCKMGR subsystem files	BCKMGR_[VAX|AXP].EXE
	BCKMGR.DAT
	BCKMGR.HLP
	BCKMGR_AUTO_SUBMIT.COM
	BCKMGR_BACKUP.COM
	BCKMGR_BACKUP.TEMPLATE
	BCKMGR_BACKUP_*.COM
	BCKMGR_BGRFDL.FDL
	BCKMGR_BHTDEF.DTR
	BCKMGR_BHTDEF.H
	BCKMGR_BHTDEF.INC
	BCKMGR_CREATE_SCHEDULE.COM
	BCKMGR_HISTORY.COM
	BCKMGR_HISTORY.DAT
	BCKMGR_HISTORY_SEARCH_[VAX|AXP].EXE
	BCKMGR_MAINT.COM
	BCKMGR_MAINT_RMU.COM
	BCKMGR_STANDARD_PROCS.COM
	BCKMGR_V33_CVT_TO_V40.COM
	BCKMGR_RESTORE_VIA_SEARCH.COM
	BCKMGR_MOVE_MEDIA.COM
	BGR_*.DAT
Function	File name
Other files	AUX_OPS.COM
	CHECKOUT.COM
	DYNAMIC.COM
	FORMAT_[VAX|AXP].EXE
	FORMAT.HLP
	LIST_REQUIRED_MEDIA.COM
	MDBKPSHR.EXE
	MDBKPPAT.COM
	OFFSITE_STORAGE.COM
	PRINT_LABELS_[VAX|AXP].EXE
	PRINT_LABELS.FOR
	PRINT_LABELS.OBJ
	SUMMUS_MAGNUS_JBL_INTERFACE.COM
	TAPEQUE.COM
	*.DECW$BOOK
	*.DECW$BOOKSHELF
	*.TXT
Function	File name
MEDIA subsystem files	MDAMCLCLB.CLB
	MDAMCLHLB.HLB
	MDAMCLSEC.LIST
	MDAMCLSEC.SEC
	MEDIA_[VAX|AXP].EXE
	MEDIA.HLP
	MEDIA.OLB
	MEDIAMSG_[VAX|AXP].EXE
	MEDIA.DAT
	MEDIAS.DAT
	MEDIAS_[VAX|AXP].EXE
	MEDIAS.FDL
	MEDIAS.HLB
	MEDIASHR_[VAX|AXP].EXE
	MEDIA_LOGIN.COM
	MEDIA_AUDIT.COM
	MEDIA_MCL_MAINT.COM
	MEDIA_QUEUES.COM
	MEDIA_QUEUES.DAT
	MEDIA_REPORT.CLB
	MEDIA_START.COM
	MEDIA_TPEFDL.FDL
	MEDIA_TPEDEF.H
	MEDIA_TPEDEF.INC
	MEDIA_TPEDEF.DTR
	MEDX_MOTIF.COM
	MEDX_MOTIF.DAT
	MEDX_MOTIF[11|12]_[VAX|AXP].EXE
	SYS$MANAGER:MEDIAS.LOG
	SYS$MANAGER:MEDIA.VAR
	SYS$MANAGER:MEDIA2.VAR
	SYS$MANAGER:MEDIA_STARTUP.COM
	*.BJL,*.SDR,*.TDR

2.5 Removing MEDIA

The entire MEDIA system can be removed from your system by executing the following command.

$ @SYS$STARTUP:MEDIA_STARTUP DELETE_ALL

2.6 Modifications to BCKMGR_BACKUP.COM

The file BCKMGR_BACKUP.COM is never replace by an installation. If you have customized this file then those changes are left in place. Any changes added by ISE to support new features are placed in the BCKMGR_BACKUP.TEMPLATE file. Please compare this file with BCKMGR_BACKUP.COM to see if any new changes need to be merged.

2.7 Conflict with diagnostic program

The media server process monitors the error activity on the system by using the system error mailbox. This can cause a problem when running diagnostic programs. If this becomes a problem, just terminate the server with the following command:

$ @SYS$MANAGER:MEDIA_STARTUP STOP

If the server process is started and this mailbox is already in use, then the server will continue and only disable the error monitoring features.

2.8 Extra unload operations

Certain stackers when a volume is unloaded automatically advance to the next medium, ready it and make it on-line. The MEDIA_SERVER will (if the UNLOAD parameter is 1 or 3) at the end of a MEDIA job check that the device was left unloaded, if not an unload is performed.

If the stacker mechanism is fast enough it may have had time to ready the next volume. As a result the server unloads it. The appearance is that this volume is skipped. By setting the below parameter in the parameter file this server feature is suppressed.

PATCH4 = 1

2.9 File placement controls

The main data files used by the system can be positioned in an alternate location by defining any or all of the following logical names. The default locations are normally satisfactory.

File	Default Location	Logical Name
MEDIA.DAT	MEDIA_LIBRARY:	MEDIADAT
SYSUAF.DAT	SYS$SYSTEM:	SYSUAF
BCKMGR.DAT	MEDIA_LIBRARY:	BCKMGR

Only the group and system logical name tables are searched. The entire media library location is controlled by the logical name MEDIA_LIBRARY.

2.10 LOGOUT MOUNT count

As a result of the way the MEDIA Librarian works, the mount count that is recorded during a logout for any media job is usually about 4 or 5 times the number of MEDIA MOUNT commands used. This is in comparison with VMS MOUNT command which has a count of one.

2.11 File Optimization

Of the data files used by MEDIA and BCKMGR, two of them are RMS keyed files (MEDIA.DAT and BCKMGR.DAT). After adding many media and defining many jobs it is advantages to do a CONVERT/OPTIMIZATION operation on these files. A command procedure has been provided to do this. The command to use is:

$@MEDIA_LIBRARY:CHECKOUT.COM

For more information just print that command procedure. This operation can significantly reduce the number of I/O operations used to access these files.