HP StorageWorks Scalable File Share - Manual (Page 177)

Backing up and restoring system data 6–47
In addition to the backups created by the
create database_backup
command, the following snapshot
backups are also created and stored:
Monthly Snapshot Backups A snapshot backup is taken and stored once each month. The first twelve
monthly snapshot backups are stored; after the first twelve months, the
oldest monthly snapshot backup is deleted each time a new monthly
snapshot backup is taken.
Yearly Snapshot Backups A snapshot backup is taken and stored once a year. The yearly snapshot
backups are kept on the system unless or until they are manually deleted.
The monthly and yearly snapshot backups allow you to revert to a previous configuration if necessary (see
Section 6.3.3).
The
show database_backups
command displays details of all stored backup files on the server, showing
the date and time each backup file was created. For convenience, the
show database_backups
command also displays a number for each file, and you can use this number when specifying that a backup
file is to be restored or deleted (see Section 6.3.3 and Section 6.3.4).
Backup file numbers are unique on a server, but not across the system; that is, there can be a backup file
numbered
1
on both the administration server and on the MDS server, and these files may not have been
created at the same time. The following is an example of the output from the
show database_backups
command:
sfs> show database_backups
Copy Made At
---- ----------
1 10:41 2004-03-10
2 10:41 2004-03-11
6.3.2 Saving database backup files
HP recommends that you save copies of database backup files on a system other than the HP SFS system.
There are two reasons for doing this, as follows:
• The backup file is stored on local disk; if that disk fails, the database backup file may be lost.
• If you are upgrading the version of the HP SFS software on your system, the upgrade process requires
you to save and later restore the database backup file. You will be unable to upgrade your system
unless you have saved a backup file on a system other than the HP SFS system being upgraded.
To save a backup file on another system, perform the following steps:
1. Enter the
show database_backups
command to list the available backup files, as follows. If
necessary, enter the command on both the administration server and the MDS server:
sfs> show database_backups
Copy Made At
---- ----------
1 10:41 2004-03-10
2 10:41 2004-03-11
2. Save the backup file, using the full name of the backup file, which is based on the time and date the
file was created. For example, if you want to save the backup file from 2004-03-11 shown in the
output in the previous step, the full name of the backup file is
/var/hpls.local/
hplsdb_20040311-1041.tar.gz
. Assuming you are saving the database to host
16.123.123.1
and using the account
fred
on that host, copy the backup file as shown in the
following example:
# scp /var/hpls.local/hplsdb_200403011-1041.tar.gz \
[email protected]:/home/fred