HPSS Installation Guide September 2002 5
Release 4.5, Revision 2
Metadata Monitor.................................................................................................. 77
NFS Daemons........................................................................................................77
Startup Daemon..................................................................................................... 78
Storage System Management................................................................................ 79
HDM Considerations.............................................................................................79
Non-DCE Client Gateway.....................................................................................81
2.7 Storage Subsystem Considerations.......................................................................... 81
2.8 Storage Policy Considerations..................................................................................81
Migration Policy....................................................................................................82
Purge Policy ..........................................................................................................84
Accounting Policy and Validation ........................................................................85
Security Policy ......................................................................................................87
Logging Policy...................................................................................................... 89
Location Policy......................................................................................................89
Gatekeeping...........................................................................................................90
2.9 Storage Characteristics Considerations.................................................................. 91
Storage Class......................................................................................................... 93
Storage Hierarchy................................................................................................101
Class of Service................................................................................................... 102
File Families........................................................................................................ 105
2.10 HPSS Sizing Considerations...................................................................................105
HPSS Storage Space............................................................................................106
HPSS Metadata Space......................................................................................... 106
System Memory and Disk Space.........................................................................132
2.11 HPSS Performance Considerations....................................................................... 135
DCE..................................................................................................................... 136
Encina.................................................................................................................. 136
Workstation Configurations................................................................................ 137
Bypassing Potential Bottlenecks......................................................................... 137
Configuration.......................................................................................................138
FTP/PFTP............................................................................................................ 138
Client API............................................................................................................139
Name Server........................................................................................................ 139
Location Server ...................................................................................................139
Logging ...............................................................................................................140
MPI-IO API......................................................................................................... 140
Cross Cell............................................................................................................ 141
DFS......................................................................................................................141
XFS......................................................................................................................141
Gatekeeping.........................................................................................................142
2.12 HPSS Metadata Backup Considerations...............................................................142
Rules for Backing Up SFS Log Volume and MRA Files ...................................143
Rules for Backing Up SFS Data Volumes and TRB Files.................................. 143