Specifications
Escala Tower PL & S, E, T System Hardware
Chapter 3: External Storage and SAN Subsystems 87/116
9es3s1c3.doc
Rev 5.9
02/12/2003
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An easy access to dedicated device management applications (running under AIX or with a Web
interface), such as Navisphere, Symmetrix Manager, Brocade WebTools… A simple click on a
device icon starts the associated application.
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Two types of users, for access level control. Display is available to all users, while information
modifications is reserved to administrators.
S@N.IT! offers an easy-to-use Graphical User Interface (GUI), available on AIX, NT and W2K.
Multiple GUI can be used simultaneously. The GUI is available on any SAN attached server, on the
management server, and can be launched also via a web browser.
S@N.IT! is a graphical application, and therefore requires a graphical display. It cannot be run on an
ASCII terminal connected to an Escala server.
The security policy relies on two user profiles. All users can display information, but only S@N.IT!
administrators can modify information and launch device specific management applications. The root
login on AIX systems or administrator rights on Windows NT/Windows 2000 do not provide any
S@N.IT! administrator rights.
Regarding the high availability aspect, a failure of S@N.IT! is fully transparent for the managed
servers connected to the SAN, and for the applications using the managed SAN. Disk subsystems,
logical volumes and libraries are still available for use. Any SAN component, including servers can be
stopped and restarted or rebooted even if the SAN manager is not available. Each SAN attached server
has a local copy of its configuration data, which ensure operational continuity in case S@N.IT!
unavailability.
S@N.IT! relies on various SNMP and SCSI mechanisms to monitor the disk subsystems, switches, …
All the event are centralized and logged by S@N.IT! to facilitate proactive management of SAN
infrastructures.
S@N.IT! does not replace the devices management tools (like Navisphere for DAS, ECC for
Symmetrix,…), but cooperate with these products. S@N.IT! is also compatible with ATF and
PowerPath, as well as with Access Logix (for DAS) or ESN Manager / Volume Logix (for
Symmetrix), but does not use these products to enforce the LUN access rules defined by the S@N.IT!
administrator.
7.1.2. Product’s Deployment
S@N.IT! is based on a three-tier architecture:
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A central server, running AIX, Windows NT or Windows 2000 consolidates all the information
from the managed objects. The system that hosts the central server is not necessarily connected to a
SAN.
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Agents are installed on all the SAN attached servers.
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The user interface (GUI or command line interface) can be used on multiple servers (AIX,
Windows NT or Windows 2000), not necessarily connected to the SAN.
The same software is installed on all servers. The role of each server (agent, user interface, central
server, or mix) is defined by configuration.