Question & Answer
Question
What is a HiperSocket?
Answer
FAQ: What is a HiperSocket?
From IBM Manual SG24-7798 -
HiperSockets (MPCIPA)
HiperSockets, also known as internal Queued
Direct I/O (iQDIO), is a hardware feature
that
provides high-speed
LPAR-to-LPAR communications within the same sever
(through
memory). It also
provides secure data flows between LPARs and high availability, if there is
no
network attachment
dependency or exposure to adapter failures.
HiperSockets can be used to communicate among consolidated servers
within a single
System z server. All the hardware boxes running these separate servers
can be eliminated,
along with the cost, complexity, and maintenance of the networking
components that
interconnect them.
Consolidated servers
that have to access corporate data residing on the System z server
can
do so at memory speeds,
bypassing all the network overhead and delays.
HiperSockets can be customized to accommodate
varying traffic sizes. With HiperSockets, a
maximum frame size can be defined according to the
traffic characteristics transported for
each HiperSockets.
Because there is no server-to-server traffic outside the System z
server, a much higher level
of network availability, security, simplicity, performance, and cost
effectiveness is achieved as
compared with servers communicating across a LAN, such
as:
_ HiperSockets
has no external components. It provides a very secure connection.
For
security purposes,
servers can be connected to different HiperSockets or VLANs
within
the same HiperSockets.
All security features, like IPSec or IP filtering, are available
for
HiperSockets interfaces
as they are with other TCP/IP network interfaces.
_ HiperSockets looks like any other
TCP/IP interface; therefore, it is transparent to
applications and supported operating
systems.
_ HiperSockets can also improve TCP/IP communications within a sysplex
environment
when the
DYNAMICXCF is used (for example, in cases where Sysplex Distributor
uses
HiperSockets within the
same System z server to transfer IP packets to the
target
systems).
The HiperSockets device
is represented by the IQD channel ID (CHPID) and its
associated
subchannel devices.
All LPARs that are configured in HCD/IOCP to use the same IQD
CHPID
have internal
connectivity and, therefore, have the capability to communicate
using
HiperSockets.
Please Note: HiperSockets is transparent to Connect:Direct for z/OS.
Historical Number
FAQ3750
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Document Information
Modified date:
17 December 2019
UID
swg21519129