Installation manual

Preparing to Use OpenVMS Management Station
G.1 Preparing Your OpenVMS System
G.1.10 Caching Storage Configuration Data
OpenVMS Management Station uses two logical names to determine how often to
refresh cached (in-memory) storage configuration data.
• TNT$PURGE_CYCLE_LATENCY—Determines how often to wait (in seconds)
after purging stale device reports before purging again. This value affects
how frequently the cluster-wide data (maintained by a ‘‘master server’’ is
updated in memory.
min = 180
default = 1800 (30 minutes)
max = 18000 (5 hours)
• TNT$LOCAL_SURVEY_LATENCY—Determines the delay (in seconds) from
one node-specific device survey to the next. This value is independent of
cluster-wide surveys requested by the ‘‘master server’’ when performing a
purge.
min = 6
default = 60 (1 minute)
max = 600 (10 minutes)
For both logical names, smaller values result in the OpenVMS Management
Station server consuming more CPU cycles in periodic purges or surveys.
If you do not accept the defaults, you might find that larger OpenVMS Cluster
systems behave better with values on the high end of the allowed range.
If you do not define these logicals, the OpenVMS Management Station server
uses the default values. If you do define these logical names, the values are used
only if they are within the minimum to maximum range.
G.1.11 Running Third-Party TCP/IP Stacks
Compaq TCP/IP Services for OpenVMS Version 3.2 or higher is the only supported
TCP/IP stack. Additional stacks have not been tested. However, TCP/IP stacks
that are 100 percent compliant with the QIO interface for Compaq TCP/IP
Services for OpenVMS should also work. (Contact your TCP/IP vendor for
additional information and support issues.)
For the best chance of success, check the following:
• Make sure that the QIO service (for example, UCXQIO) is enabled.
• For TCPware, also make sure that TCPware’s UCX$IPC_SHR.EXE is an
installed image.
• Also for TCPware, make sure you are running a version of TCPware that
correctly implements a DECC-compatible socket interface, such as Version
5.3-3.
G.1.12 Determining and Reporting Problems
If you encounter a problem while using OpenVMS Management Station, please
report it to Compaq. Depending on the nature of the problem and the type of
support you have, you can take one of the following actions:
• If your software contract or warranty agreement entitles you to telephone
support, call Compaq.
Preparing to Use OpenVMS Management Station G–7