US Robotics 7931 Betriebsanweisung PDF herunterladen (Seite 71)

Chapter 3 Archiving 47

Note – The data verification feature places an additional burden on stager resources

since data verification requests are placed on the stager queue along with the normal

stage requests. Data verification also leads to additional tape mounts and may

therefore affect archiver and stager performance. Since a file cannot be released until

all archive copies are made, using data verification may also require additional disk

cache.

About the archiver.cmd File

The archiver.cmd file controls the archiver’s behavior. By default, the archiver

runs whenever sam-fsd is started and a Sun StorageTek SAM file system is

mounted. In the absence of an archiver.cmd file, the archiver uses the following

defaults:

■ All files are archived to all available volumes.

■ The archive age for all files is 4 minutes.

■ The archive interval is 10 minutes.

Using directives located in the archiver command file (archiver.cmd), you can

customize the actions of the archiver to meet the archiving requirements of your site.

▼ To Create or Modify an archiver.cmd File and

Propagate Your Changes

As an alternative to this method, you can use the File System Manager software to

create or modify the archiver.cmd file. For more information, see the File System

Manager online help.

1. (Optional) Decide whether you want to edit the actual archiver.cmd file or a

temporary archiver.cmd file.

Perform this step if you have an /etc/opt/SUNWsamfs/archiver.cmd file and

your system is already archiving files. Consider copying your archiver.cmd file to

temporary location where you can edit and test it before putting it into production.

2. Use vi(1) or another editor to edit the file.

Add the directives you need in order to control archiving at your site. For

information on the directives you can include in this file, see “Using Archiver

Directives” on page 51 and “About Disk Archiving” on page 91.

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US Robotics 7931 Betriebsanweisung Seite 71