•{HPSS secondary metadata backup path}/subsys1
•/<metadata backup filesystem>
•Others site-specific filesystems
15.2.2. Operating System Backup
It is also necessary to perform appropriate OS backups on a regular basis. However, these activities are
outside the scope of this document. Refer to the relevant OS documentation for the appropr iate backup
procedures.
15.2.3. Kerberos Backup
If Kerberos authentication is configured, periodic backups of the Kerberos infra structure will need to be
made. If mkhpss was used to configure Kerberos, the Kerberos components that must be backed up are
placed in the following locations:
•The Kerberos client configuration file is /etc/krb5.conf.
•The default keytab file is /etc/v5srvtab.
•If a Key Distribution Center (KDC) is running on a node, all files related to it are placed in a
single directory: /var/hpss/krb5kdc.
If you configured Kerberos manually, you'll need to determine the file locations yourself. The files that
should be backed up are:
• Client configuration file
• KDC configuration file
• KDC acl_file
• KDC admin_keytab
• KDC dict_file
• KDC database_name
• KDC key_stash_file
• KDC default_keytab_name
15.3. HPSS User Data Recover y
In some situations an HPSS tape or disk volume may become damaged such that the user data stored on
the volume cannot be retrieved by the HPSS servers. The following paragraphs describe how to recover
the data from the damaged media.
15.3.1. Recovering HPSS Fi les from Damaged HPSS Volume s
Occasionally, a tape or disk volume is damaged and HPSS will experience errors while trying to read
data stored on the damaged volume.
The following steps must be done to determine whether a volume is actually damaged and, if so, to
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