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58 Sun StorageTek SAM Archive Configuration and Administration Guide • Version 4, Update 6, 04/07

Note – Use volume overflow with caution only after thoroughly assessing its effect

on your site. Disaster recovery and recycling are much more difficult with files that

span volumes. For more information, see the Sun StorageTek Storage Archive Manager

Troubleshooting Guide and the request(1) man page.

The archiver controls volume overflow through the ovflmin directive. The

ovflmin directive specifies the file size threshold that triggers the overflow process.

By default, volume overflow is disabled.

This directive has the following format:

Assume that many files exist with a significant mo media cartridge fraction length

(such as 25 percent). These files leave unused space on each volume. To better pack

volume space, set ovflmin for mo media to a size slightly smaller than the size of

the smallest file. The following directive sets it to 150 megabytes:

Note that enabling volume overflow in this example also causes two volumes to be

loaded for archiving and staging the file because each file will overflow onto another

volume.

The ovflmin directive can also be set for an individual archive set.

The sls(1) command output lists the archive copy showing each section of the file

on each VSN.

CODE EXAMPLE 3-4 shows the archiver log file and CODE EXAMPLE 3-5

shows the sls -D command output for a large file named file50 that spans

multiple volumes.

ovflmin = media minimum-file-size

TABLE 3-7 Arguments for the ovflmin Directive

Argument Meaning

media The media type. For a list of valid media types, see the mcf(4) man

page.

minimum-file-size The minimum file size that you want to trigger the volume overflow.

ovflmin=mo 150m

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