US Robotics 7931 Betriebsanweisung PDF herunterladen (Seite 139)

115

CHAPTER

Releasing

Releasing is the process by which the releaser makes disk cache space available by

identifying archived files and releasing their disk cache copy. This makes room for

other files to be created or staged from archive media. The releaser can release only

archived files. A released file has no data on the disk cache.

The Sun StorageTek SAM software automatically invokes the releaser process when

a site-specified disk threshold is reached. Alternatively, you can use the release(1)

command to release a file’s disk space immediately or to set releasing parameters for

a file.

You can also specify that files be released immediately after archiving, that files

never be released, or that files be partially released.

This chapter describes the releasing process and releaser operations. It contains the

following sections:

■ “Releaser Process Overview” on page 115

■ “Releaser Concepts” on page 116

■ “About Partial Releasing and Partial Staging” on page 118

■ “About the releaser.cmd File” on page 121

■ “Planning Releaser Operations” on page 129

■ “Running the Releaser Manually” on page 130

Releaser Process Overview

When file system utilization exceeds its configured high-water mark, the file system

management software invokes the releaser, which does the following:

1. Reads the releaser.cmd file and collects the directives that control the release

process.

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US Robotics 7931 Betriebsanweisung Seite 139