HP StorageWorks File System Extender Software V3.4 CLI reference (T3648-96013, October 2006)

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backed up have to reside on LVM logical volumes (on Linux systems) or addi-

tional snapshot software needs to be installed in advance (on Windows systems).

This is an essential prerequisite. For details on the required snapshot software on

Windows platform, see the FSE release notes.

When tape is used as backup destination, FSE backup stores backup images to

tape media of the backup FSE media pool. This media pool should therefore

be conﬁgured before fsebackup is run. Backup FSE media pool is an FSE me-

dia pool conﬁgured with the BACKUP type and preferably one data volume on its

media. Since FSE backup uses only the ﬁrst data volume on each backup medium,

this way you ensure that storage capacity of the backup FSE media pool is opti-

mally used. For details on conﬁguring media pools, see the fsepool man page.

Note that backup FSE media must be formatted and initialized before they can be

used.

Warning:

As an FSE administrator, it is your responsibility to keep track of which

backup image is stored on which backup FSE medium (with tape as backup

destination) or in which backup image ﬁle (with disk as backup destination).

With tape as backup destination, fsebackup only checks if the backup FSE

media pool is conﬁgured, and if there is enough free space on any medium in

it or on the backup medium speciﬁed in the command line (if the ––medium

option is speciﬁed). To avoid potential data loss, HP also suggests that you

periodically check condition of tape media in the backup FSE media pool.

THE BACKUP PROCESS If all prerequisites are fulﬁlled, the backup process

can begin. The process is executed by a backup job. The ﬁle backup.pid prevents

two backup jobs from being run in parallel in the same FSE implementation.

The backup process performs the following steps. Each step starts only if all

previous steps were successful:

1. FSE server is internally suspended. Operation of all running Partition Man-

agers is temporarily blocked, in order to achieve a consistent state of all File

System Catalogs (FSCs) and other entities that will be backed up.

2. Data from transaction log ﬁles of Hierarchical Storage Management

Databases (HSMDBs) on the FSE clients are committed to the main

HP StorageWorks File System Extender Software CLI reference