An SAP HANA system is composed of three main components:
v
The host
v
The system
v
The instance
In everyday language, these terms
may have different meanings, so it is important to clearly understand what
these terms mean when it comes to an SAP HANA installation.
Host:
v A
host is a hardware server or operating environment in which the SAP HANA
database runs. The host comprised of CPU, memory, storage, network, and
operating system.
v The
host provides links to the installation directory, data directory, and log
directory, or the storage itself. The storage for an SAP HANA installation does
not have to be on the host.
v
For multi-host systems, a shared storage or a
storage that is accessible on-demand from all hosts is required. For more
information, refer to the multi-host system concepts.
Instance:
v
An SAP HANA instance is the set of SAP HANA
system components that are installed on one host. A system can be distributed
as several instances among several hosts, but each instance in a multi-host
system must have the same instance number.
System:
v A
system is one or more instances with the same number. The term
"system" is interchangeable with the term "SAP HANA
database". If a system has more than one instance, it must be dispersed
over several hosts as a distributed system.
v
An SAP HANA system is identified by a System ID
(SID), which is a three alphanumeric character designation that provides a
specific nomenclature for a particular SAP HANA system.
v
From the perspective of a system administrator,
SID is one unit, which can be, started up, shut down, or backed up the system
as a singular entity. While data itself can be divided amongst the memory of
the different hardware servers which makeup the SAP HANA system
An SAP HANA system can be configured as one of the following
types:
Single
Host System
|
One SAP HANA instance on one host
|
Multiple
Host (Distributed) System
|
Multiple SAP HANA instances distributed
over multiple hosts, with one instance per host
|
Hello,
ReplyDeleteMany thanks for this block.
In a single host system. Where do I install HANA: in sapmnt or in /hana/shared ?
Do I need /hana/shared in a single host system ?
many thanks
Best regards
Mike