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Facilité d'utilisation
Networking on Integrity NonStop Servers
Integrity NonStop Server Networking Compared to
NonStop S-Series Server Networking
• Integrity NonStop Server Networking Compared to NonStop S-Series Server
Networking
• Integrity NonStop Server Networking Compared to Other Platforms
Integrity NonStop Server Networking Compared to
NonStop S-Series Server Networking
The main difference to be aware of between the NonStop S-series server and the
Integrity NonStop server is that some of the networking technology of the
NonStop S-series server has been ported to the Integrity NonStop server, but the
hardware for that legacy networking technology is accessible only by connecting to the
NonStop S-series server I/O enclosure. (See Networking Software Products Available
on the Integrity NonStop Server on page 1-3 for a list of all networking products
available.) In the Integrity NonStop server I/O enclosure (the IOAM), only the G4SA is
supported.
The other difference is that the Kseg2 memory space in QIO is larger (256 MB) than
the Kseg2 memory space on the NonStop S-series server (128 MB). Kseg2 memory
can be configured to enhance performance of the NonStop TCP/IPv6 product. See the
TCP/IPv6 Configuration and Management Manual and the QIO Configuration and
Management Manual for more information about configuring Kseg2.
Integrity NonStop Server Networking Compared to Other
Platforms
The Integrity NonStop server clustering technology makes it possible for the system to
appear as multiple hosts. Also, the system, when combined with the parallel
processing architecture of the NonStop TCP/IPv6 product, can appear as a single host
while allowing all 16 processors to service one port. The latter feature allows for high
scalability of TCP/IP client applications.
The NonStop TCP/IPv6 product offers the unique ability to bind multiple servers to a
single port. The listening application instances can run in different processors, bind to a
shared IP address and port, and, so, service a single IP image with 16 processors of
computing power.
This feature, called round-robin filtering, allows for scalability of the listening application
(in this example, the web server process). By sharing a port, the web server process
can provide a single-IP host image to the world through either a single IP address or, in
the multi-homed situation, using DNS round-robin address rotation through multiple IP
addresses. In the scenario where the web server processes are sharing an IP address,
the answer that the authoritative name server process provides for the web server
process is the same for all 16 instances of that application server. Requests that come
into the web server process at that IP address are distributed among the 16 web server
processes.
For example, to run a website on your Integrity NonStop server, run iTP Secure
WebServer in an environment configured for NonStop TCP/IPv6 with round-robin
Introduction to Networking for HP Integrity NonStop NS-Series Servers—529874-003
1 -6
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