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9
Performing Routine Disk Operations
This section describes how to perform routine operations related to the magnetic disks
on your system:
Topic
Using the Subsystem Control Facility (SCF)
Checking Disk Status
Bringing Up a Disk or Path
Taking Down a Disk or Path
Altering the Current Path to a Dual-Ported Disk
Removing Half of a Mirrored Disk
Bringing Up the Down Half of a Mirrored Disk
Finding and Sparing Bad Tracks and Sectors
Managing Disk Space Usage
Monitoring and Altering Swap Files
Solving Common Disk Problems
Using the Subsystem Control Facility (SCF)
You perform many operations on disks and other peripheral devices through the
Subsystem Control Facility (SCF). See the SCF Reference Manual for G-Series
Releases for complete syntax rules, considerations, and examples for all SCF
commands, along with SCF error messages.
Table 9-1. SCF Command Summary (page 1 of 4)
Command
ABORT
ACTIVATE
ADD
AGGREGATE
ALIAS
ALLOCATE
Function
(Does not support TAPE device in G-series releases) Stops the operation
of an object without regard to the current state of its operation.
Returns a suspended object to the STARTED state.
Defines an object to a subsystem.
Displays the number of objects in the STARTED state and the
STOPPED state, together with the total number of objects in a state other
than STARTED or STOPPED.
Defines a command or text abbreviation.
Allocates (reserves) file space for one or more objects. Each object must
be an explicitly (using the ADD command) or implicitly defined object.
Guardian User's Guide —425266-001
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