IBM Hub/Switch Installation Manual page 5

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
HPSS Installation Guide
Release 4.5, Revision 2
September 2002 5