Hub/Switch Installation Guide

Chapter 2 HPSS Planning
144 September 2002 HPSS Installation Guide
Release 4.5, Revision 2
• The file system used to store TRB (i.e., data volume backup) files must be mirrored on at
least two separate physical disks or be stored on a redundant RAID device.
• Separate disks must be used to store the SFS data volumes versus the file system used to
store TRB files.
• Separate disks must be used to store the SFS log volume versus the SFS data volumes.
• A sufficient number of TRB files must be generated such that a complete backup of each
SFS data volume is made at least every 5 days (recommend using a TRB file size such that
it takes no more than 20 files to cover the entire data volume).
• TRB files must be copied to tape as soon as they are generated.
• TRB files must be copied to at least two different tapes.
• A complete set of TRB files must be generated (i.e., a complete SFS data volume backup)
prior to running HPSS in production mode.
• A data dump(dd)ofallSFSlog anddata volumesshould bemade atleast onceper month
while HPSS and SFS are not running and should be copied to at least two different tapes.
2.12.3 Miscellaneous Rules for Backing Up HPSS Metadata
• Once a month, a site must tell SFS to truncate old backups and retain backup information
for at least the latest 10 complete backups.
• Atleastoneimage ofthe tapebackups must bemovedoffsite atafrequency thatmeetsthe
site’s disaster recoveryobjectives. For example, if a site always wants to beable torecover
to the previous day in case of a disaster, then tapes must be moved offsite each day.
• TheEncina SFSconfiguration informationmustbe backedup toat leasttwoseparatetapes
after SFS is initially configured and immediately after the SFS configuration changes (i.e.,
a data volume isadded, deleted,or expanded). It must alsobe backedup at least once per
week.
• The DCE servers information (e.g., the security registry and CDS name space) must be
backed upto at least two separate tapes immediatelyafter HPSS is configuredand then at
least once per week.
• If configured,the HPSSPFTPconfiguration files must be backed up at least onceper week.
• If configured, the HPSS NFS configuration files must be backed up at least once per week.
• HPSS must not be used to read/write tapes used to store backup files (Encina, DCE, etc.).