Global Database Name. The name of the global database for the HPSS system.
Subsystem Database Name. The name of the database which contains the subsystem tables use d by this 
Core Server.
Schema Name. The name of the database schema.
Root Fileset Name. The name of the root fileset used by the Core Server.
Root Fileset ID. The fileset id for the root fileset used by the Core  Server.
Maximum Open Bitfiles. The maximum number of bitfiles that can be open simultaneously.
Maximum Active I/O Reqs. The maximum number of simultaneous I/O requests allowed.
Maximum Active Copy Reqs. The maximum number of simultaneous copy requests allowed.
COS Change Stream Count. Indicates the number of background COS change threads to run in the 
Core Server.  The default is 1.
COS Change Retry Limit. Limits the number of times that the Core Server will retry a failed COS 
change operation.  When this limit is reached, the attempt to change the COS of the file  is terminated.
Tape Dismount Delay (seconds).  The amount of time, in seconds, a mounted tape volume will remain 
idle before being dismounted by the Core Server.  Larger values may reduce undesirable tape 
dismount/remount events, at the expense of lower tape drive utilization.
Tape Handoff Delay (seconds).  The amount of time, in seconds, a mounted tape will be hel d in a 
client's session before become eligible to be handed off to another client that  wishes to use the tape.
PVL Max Connection Wait (seconds).  The amount of time, in seconds, the Core Server will wait  to 
connect to the PVL before declaring an error in pending PVL jobs.
Fragment Trim Limit (clusters).   Fragment Trim Limit sets the lower limit of the  number of clusters 
that will be trimmed from a disk segment extent, when the extent turns out to be longer than the needed  
length.
Fragment Smallest Block.   Fragment Smallest Block sets the boundary used to determine where  to 
remove excess clusters from allocations that have excess space.  The smallest block returned  to the free 
space map from the excess space at the end of an extent will be this size or larger.
Root User ID. The numerical id for the root user used by the Core Server.
Root is Superuser. If this flag is ON, clients using the Root User ID will have superuser powers and 
permissions.
Subsystem Statistics :
•Stages. The number of stage requests processed in the Core Server since startup or  last reset of the 
statistics.
•Migrations. The number of migrate requests processed in the Core Server since startup  or last 
reset of the statistics.
•Purges. The number of purge requests processed in the Core Server since startup  or last reset of 
the statistics.
HPSS Management Guide November 2009
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