Specifications

Escala Tower PL & S, E, T System Hardware
Chapter 3: External Storage and SAN Subsystems 48/116
9es3s1c3.doc
Rev 5.9
02/12/2003
The Navisphere manager can be used either in local or distributed mode. In local mode, the manager
and the agent are on the same server. In distributed mode, the Navisphere manager and all the
Navisphere agents communicate through TCP/IP. The distributed mode requires to install a software
license (NetLS key) on the AIX server hosting the Navisphere manager. A Navisphere agent can be
used simultaneously from a local Navisphere manager, or from one or multiple distributed Navisphere
managers. The packaging of the Navisphere Manager for AIX allows to install separately the manager
and the agent, to reduce the disk space requirements for AIX servers.
The recommended mode of deployment uses a single Navisphere manager operating in distributed
mode, and Navisphere agents for each DAS connected to an AIX server. Each DAS must have at least
one agent on an AIX server. When a DAS subsystem is connected to multiple servers, the deployment
of two (or more) agents on distinct AIX servers is recommended to preserve the manageability in case
of AIX server failure.
Case study: local mode
The next figure shows a sample of DAS configuration using only the local mode, in various
configurations (server connected to multiple DAS, shared DAS, DAS dedicated to a single server).
With this mode, the Manager of each AIX server manages only the DAS subsystems connected to this
server. A remote X11 display or a web browser can be used to display the Navisphere Manager for
AIX on other servers.
The local mode can be used either with standalone servers or cluster nodes. The PowerConsole can
activate the local Navisphere managers installed on cluster nodes. Nevertheless, the distributed mode
is preferable with the PowerConsole.
SCSI
Enterprise LAN
X terminal
AIX server
Navisphere manager/GUI Navisphere agent
AIX server
Optional
DAS
DAS
Fibre Channel
DAS
1 Agent/Manager
for 2 DAS
AIX server
DAS
Fibre Channel
AIX server
AIX server
1 Agent/Manager
for 1 DAS
2 Agent/Manager for 1 DAS
1 connected server can not
manage the DAS
Web browser
Optional
Local Navisphere mode