Introduction to Networking for NonStop S-Series Servers

HP NonStop Communications Products
Introduction to Networking for HP NonStop S-Series Servers—520670-005
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Port Access Method
(PAM)
An HP communications subsystem that provides an independent
interface to allow applications access to token-ring or Ethernet
local area networks (LANs) on NonStop S-series servers. The
PAM subsystem provides a port interface that applications can use
by making file-system procedure calls.
PTrace PTrace displays the results of a trace obtained with the SNAX
product family. Fields are labeled so operators need not be familiar
with trace record formats.
QIO An HP product that provides buffers and control blocks for protocol
processes, including the ServerNet LAN systems access (SLSA)
subsystem and another HP data communications subsystem
running on the same processor. The QIO subsystem consists of
the QIO Monitor (QIOMON) process, the LAN driver and interrupt
handler (DIH), and the QIO library. SNAX over Ethernet uses QIO
to communicate directly with SLSA and eliminate the need for the
Port Access Method (PAM) subsystem.
Remote Duplicate
Database Facility
products (RDF and
NonStop RDF/MP)
The RDF subsystem maintains a backup database on one or more
remote systems by constantly reading the audit records generated
by the NonStop Transaction Services/MP (NonStop TS/MP)
product’s main functional component, the Transaction Monitoring
Facility (TMF), on the primary system, and then applying all
changes to the backup database within seconds or minutes.
Besides providing disaster recovery for your critical online
applications, the backup database can serve as a read-only
resource when transaction workload needs to be reallocated to
provide greater system efficiency.
Safeguard System
Protection
Safeguard provides authentication, authorization, and auditing
services for protecting system or network components from
unauthorized use.
SCF See Subsystem Control Facility (SCF)
.
SCP See Subsystem Control Point (SCP)
.
ServerNet adapter A customer-replaceable unit (CRU) or field-replaceable unit (FRU)
that connects peripheral devices to the rest of the system though a
ServerNet bus interface (SBI). A ServerNet adapter is similar in
function to an I/O controller logic board (LB) and backplane
interconnect card (BIC) in other NonStop systems.
ServerNet Clusters See HP NonStop ServerNet Clusters
.
ServerNet LAN
systems access
(SLSA) subsystem
A communications subsystem that provides an architecture that
supports parallel local area network (LAN) input/output (I/O). This
architecture allows NonStop S-series servers to communicate
across a ServerNet system area network (ServerNet SAN) and
access Ethernet and token-ring devices through various LAN
protocols.