HP StorageWorks Scalable File Share - Manual (Page 178)

Verifying, diagnosing, and maintaining the system 6–48
6.3.3 Restoring a system database backup
When the database is backed up automatically at a set interval, it is backed up on both the administration
server and on the MDS server (assuming that both servers are running; if either the administration server or
the MDS server is down, the database is only backed up on the other server). The backup files on the two
servers may not be identical, as they are not created simultaneously. In addition, when the
create
database_backup
command is run manually, the database is only backed up on the server where the
command is run. For these reasons, when you want to restore a backup file, you may need to look on both
the administration server and the MDS server to find the backup file that you want to restore.
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. Use the date on the file (shown in the
Made At
field in the output from the
show
database_backups
command) to identify the backup file that you require.
To restore a system database backup, 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. When you have identified the backup file that you want to restore, enter the command shown in the
following example. You must enter the command on the server (administration server or MDS server)
where the backup file is stored:
sfs> restore database_backup 1
3. To ensure that all configuration files are restored from the backup file, enter the
configure server
command for the administration server and the MDS server, as shown in the following example:
sfs> configure servers south[1-2]
4. Reboot all of the Object Storage Servers, as shown in the following example:
sfs> shutdown servers south[3-4] wait=0
sfs> boot servers south[3-4]
6.3.4 Deleting a system database backup
When the
create database_backup
command is run automatically, the database is backed up on both
the administration server and on the MDS server (assuming that both servers are running—if either the
administration server or the MDS server is down, the database is only backed up on the other server). The
backup files on the two servers may not be identical, as they are not created simultaneously. When you want
to delete a backup file, you may need to look on both the administration server and the MDS server to find
the backup file that you want to delete.
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. Use the date on the file (shown in the
Made At
field in the output from the
show
database_backups
command) to identify the backup file that you want to delete.