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Chapter 6 HPSS Configuration
HPSS Installation Guide September 2002 347
Release 4.5, Revision 2
Server ID The UUID of the MVR.
This ID is copied over
from the selected MVR
general configuration
entry.
The UUID of the MVR. This field
cannot be modified. It is displayed
for reference only.
Extracted
from the
MVR general
configuration
entry.
Buffer Size The buffer size (of each
buffer) used for double
buffering during data
transfers.
The minimum mover buffer size is
the size of smallest block size for
any device the Mover will handle.
The maximum value will be
bounded by the available system
memory and the number of
concurrent mover requests
anticipated.
1,048,576
Advice: This value should be tuned based on device and networking configuration
and usage. The trade-off for this value is that large buffer sizes will use more system
memory and may be inefficient for small transfers (e.g., if the mover buffer size is
4MB, but client requests are 512KB, the Mover will not achieve any double
buffering benefit because the entire amount of the transfer fits in one mover buffer).
A smaller buffer size will cause device and network I/O to be broken more often,
usually resulting in reduced throughput rates for all but the smallest transfers.
TCP Port The TCP/IP port number
used for the TCP/IP listen
process to receive
connections.
Should be a value over 5000. 5001
Advice: The port number must be unique for MVRs running in the same node.
For Movers running in non-DCE mode, the Mover will internally use the port one
greater than the one configured in this field on the non-DCE/Encina platform
during initialization (e.g., if 5001 is entered, port 5002 is used on the non-DCE/
Encina node); therefore available port ranges on both nodes must be taken into
consideration when selecting this value.
Table 6-23 Mover Configuration Variables (Continued)
Display Field Name Description Acceptable Values
Default
Value