US Robotics 7931 Guia do Utilizador descarregar pdf (Página 104)

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

It is also possible to sort files within an archive set copy by age, size, or path. The

age and size arguments are mutually exclusive.

CODE EXAMPLE 3-24 shows how to

sort an archive set using the -sort parameter with the argument age or size.

The first line forces the archiver to sort an archive request by path name. The second

example line forces the archiver to sort the archive set copy cardiac.2 by the age

of the file, oldest to youngest. The third line forces the archive set copy catscans to

be sorted by the size of the file, smallest to largest. If you wanted a reverse sort, you

could specify -rsort in place of -sort.

Controlling Unarchiving

Unarchiving is the process by which archive entries for files or directories are

deleted. Files are unarchived based on the time since last access. All frequently

accessed data can be stored on fast media, such as disk, and all older, infrequently

accessed data can be stored on tape. By default, files are never unarchived.

For example, suppose that the archiver.cmd file shown in

CODE EXAMPLE 3-25

controls a file that is accessed frequently. This file remains on disk all the time, even

if it is older than 60 days. The copy 1 information is removed only if the file is not

accessed for 60 days.

If the copy 1 information is removed (because the file was not accessed for 60 days)

and someone stages the file from copy 2, it is read from tape. After the file is back

online, the archiver makes a new copy 1 on disk and the 60-day access cycle starts all

over again. The Sun StorageTek SAM archiver regenerates a new copy 1 if the file is

accessed again.

CODE EXAMPLE 3-24 Directives for Sorting an Archive Set

cardiac.1 –sort path

cardiac.2 -sort age

catscans.3 -sort size

CODE EXAMPLE 3-25 Directives to Control Unarchiving

arset1 dir1

1 10m 60d

2 10m

3 10m

vsns

arset1.1 mo OPT00[0-9]

arset1.2 lt DLTA0[0-9]

arset1.3 lt DLTB0[0-9]

1 2 ... 99 100 101 102 103 104 105 106 107 108 109 ... 287 288

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