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Performing Routine Disk Operations
Guardian User’s Guide — 425266-001
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Managing Disk Space Usage
Managing Disk Space Usage
You should regularly monitor the amount of available space on a system to ensure that
problems do not arise for users because of a lack of available disk space.
Disks, unlike other system resources, are subject to performance degradation simply
through normal usage. The addition and deletion of records and files can cause file and
disk fragmentation over time. Adding large amounts of data to a file can cause
inefficient internal file structures.
Disks can also become full, which prevents system users from creating additional files,
subvolumes, or volumes.
To make more disk space available to users:
1. Analyze your current available disk space.
2. Create more disk space as needed based on your analysis, by either using DCOM to
compress existing files and subvolumes, or by purging old and unneeded files and
subvolumes.
You can analyze disk space using either the Subsystem Control Facility (SCF) or the
Disk Space Analysis Program (DSAP).
Analyzing Disk Space Usage With the Subsystem Control Facility (SCF)
The SCF STATUS DISK, DETAIL command lists the number of free pages, the sizes of
contiguous blocks of free pages, and the number of files currently on a specified disk. It
also lists the number of pages in the primary extent of the disk directory, and the number
of extents that have been allocated for the disk directory.
To check the free space on a disk with the SCF STATUS DISK, DETAIL command,
enter:
> SCF STATUS DISK $disk, DETAIL
The format of the resulting display and details about this command are described in the
SCF Reference Manual for the Storage Subsystem.
Example
To display disk free-space information for the disk $AMBER, enter:
> SCF STATUS DISK $AMBER, DETAIL
Содержание Guardian
Страница 24: ...About This Guide Guardian User s Guide 425266 001 xxii Your Comments Invited ...
Страница 30: ...Part I Using the Compaq Tandem Advanced Command Language TACL Guardian User s Guide 425266 001 ...
Страница 100: ...Part II Managing Files Using the File Utility Program FUP Guardian User s Guide 425266 001 ...
Страница 146: ...Part III Managing Disk and Tape Processes Guardian User s Guide 425266 001 ...
Страница 232: ...Backing Up and Restoring Disk Information Guardian User s Guide 425266 001 11 26 Backcopy Examples ...
Страница 234: ...Part IV Using the Spooler and Its Utilities Guardian User s Guide 425266 001 ...
Страница 248: ...Introduction to the Spooler Guardian User s Guide 425266 001 12 14 Sending Output to a SPOOL DEFINE ...
Страница 300: ...Performing Routine Spooler Operations Using Spoolcom Guardian User s Guide 425266 001 14 38 Problem Solving Summary ...
Страница 322: ...Part V Security Features and Other Guardian Utilities Guardian User s Guide 425266 001 ...
Страница 368: ...Monitoring Event Messages Guardian User s Guide 425266 001 17 14 Using the Event Viewer ...
Страница 378: ...Displaying Version and System Information Guardian User s Guide 425266 001 18 10 Task 2 Interpret SYSINFO Output ...
Страница 410: ...Monitoring Hardware Components Guardian User s Guide 425266 001 19 32 Automating System Monitoring ...
Страница 460: ...Index Guardian User s Guide 425266 001 Index 24 Special Characters ...