NonStop Operations Guide for H-Series and J-Series RVUs

Monitoring the Use of Space on a Disk Volume....................................................................149
Monitoring the Size of Database Files.................................................................................149
Example....................................................................................................................149
Monitoring Disk Configuration and Performance..................................................................150
Identifying Disk Drive Problems...............................................................................................150
SCSI Disk Drives Attached to NonStop NS-Series Systems......................................................150
M8xxx Fibre Channel Disk Drives.......................................................................................151
Recovery Operations for Disk Drives .......................................................................................151
Recovery Operations for a Down Disk or Down Disk Path......................................................152
Recovery Operations for a Nearly Full Database File............................................................153
Related Reading for Disk Drives..............................................................................................154
13 Tape Drives: Monitoring and Recovery.....................................................155
When to Use This Chapter.....................................................................................................155
Overview of Tape Drives........................................................................................................155
Monitoring Tape Drives.........................................................................................................155
Monitoring Tape Drive Status With OSM.............................................................................156
Monitoring Tape Drive Status With SCF..............................................................................157
Example....................................................................................................................158
Monitoring Tape Drive Status With MEDIACOM..................................................................158
Example....................................................................................................................158
Monitoring the Status of Labeled-Tape Operations................................................................159
Identifying Tape Drive Problems..............................................................................................159
Recovery Operations for Tape Drives ......................................................................................160
Recovery Operations Using the OSM Service Connection......................................................160
Performing an OSM Action on a Tape Drive...................................................................160
Performing an OSM Action on a Multiple Tape Drives......................................................160
Recovery Operations Using SCF........................................................................................160
Related Reading for Tapes and Tape Drives..............................................................................161
14 Printers and Terminals: Monitoring and Recovery......................................162
When to Use This Chapter.....................................................................................................162
Overview of Printers and Terminals ........................................................................................162
Monitoring Printer and Collector Process Status.........................................................................162
Monitoring Printer Status...................................................................................................162
Monitoring Collector Process Status....................................................................................163
Recovery Operations for Printers and Terminals.........................................................................163
Recovery Operations for a Full Collector Process..................................................................163
Related Reading for Printers...................................................................................................163
15 Applications: Monitoring and Recovery...................................................165
When to Use This Chapter.....................................................................................................165
Monitoring TMF...................................................................................................................165
Monitoring the Status of TMF.............................................................................................165
Monitoring Data Volumes..................................................................................................166
TMF States......................................................................................................................167
Monitoring the Status of Pathway............................................................................................167
PATHMON States............................................................................................................168
Related Reading for Pathway..................................................................................................169
16 Power Failures: Preparation and Recovery................................................170
When to Use This Chapter.....................................................................................................170
System Response to Power Failures .........................................................................................170
OSM Power Fail Support...................................................................................................170
NonStop Cabinets (Modular Cabinets) ..............................................................................171
NonStop S-Series I/O Enclosures.......................................................................................171
External Devices .............................................................................................................171
8 Contents