System information
50
AS/400 IBM Network Station: Techniques for Deployment in a WAN
segment. Assume the electricity on all 100 Networks Stations goes out
and some time later it comes back on. Assume the Network Stations all
have the same memory size (for example, 32MB) and identical monitors
attached. It is possible for all 100 to be at the Login window in 280
seconds (less than five minutes). The 280 seconds comes from: 21
seconds for hardware test, 30 seconds to load the kernel, and 229
seconds to load configuration files.
2.5.1.4 AS/400 5250 Applications
The Network Station user should see 5250 applications almost exactly as
they were on the NPT or PC terminals. However, the load on the AS/400
server may be different. Network Stations use the AS/400 TCP/IP TELNET
path. TELNET consumes 27% more CPU time per transaction than an NPT
attached to a local twinax for a typical commercial workload. This yields a
20% capacity reduction over a twinax attached NPT. For comparison, a
Client/Access PC using 5250 over SNA, when using the same workload,
consumes 10% more CPU time per transaction than a local twinax attached
NPT.
The implication is that customers migrating from local twinax attached NPTs
to LAN attached Network Stations will probably use more CPU to run the
same 5250 applications. Customers migrating from LAN attached SNA
Client/Access PCs will also probably use more CPU. Customers migrating
from LAN attached TCP Client/Access PCs should need no additional CPU
capacity to run their 5250 applications.
2.5.1.5 Browser
In general, the Series 100, 300 and 1000 all perform equally well. Their
performance should be comparable to that seen on a PC.
It is important that either SOCKS or Proxy are configured, but not both. Poor
performance is seen when both are used.
2.5.1.6 Java Virtual Machine Applets and Applications
Java is still evolving. As such, its use on a Network Station is also evolving.
The Series 100 clearly should not be used for Java. The Series 300, while
twice as fast as the 100, can be used for very limited Java applets. The Series
1000 is for Java; however, since Java has varied uses, customers are
encouraged to test their Java applications on the Series 1000 before putting
them into production.