EMC Connectrix ED-64M, User Manual

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1
Overview
1-7
ED-64M Director Operating Features
◆
Fan modules — The director contains two fan modules, each
containing three fans. If one or more fans in a module fail, the
redundant fan module provides cooling until the failed module is
replaced. If the second fan module fails, software shuts off power
to the director to prevent system damage.
◆
Ports — The director is delivered with a minimum of four UPM
cards (16 ports). Any unused Fibre Channel port can be used in
place of a failed port. To continue device operation, you must
reconnect the fiber optic cable from a failed port is to an unused
operational port.
◆
CTP Card — A redundant CTP card provides a backup
connection to the Connectrix service processor and ensures
continued director operation if the active CTP card fails.
◆
SBAR Card — A redundant serial crossbar (SBAR) card ensures
uninterrupted transmission and receipt of Fibre Channel frames
between ports if the active SBAR card fails.
Connectivity
The director and the Product Manager applications support these
Fibre Channel connectivity features:
◆
Any-to-any connectivity — The director software configures
hardware routing tables for each source port to provide
any-to-any port connectivity. Subject to user-defined restrictions
(port blocking and zoning), the tables define the destination ports
with which the source port is allowed to communicate.
◆
Extended distance support — Through repeaters or Dense Wave
Division Multiplexing (DWDM) equipment, any director port can
be configured (by increasing a port’s buffer-to-buffer credit value)
to operate over extended distances at full speed.
◆
Port blocking — System administrators can block or unblock any
director port through the Product Manager application. Blocking
a port prevents an attached device from logging in to the director
or communicating with any attached device. A blocked port
continuously transmits an off-line sequence (OLS).
◆
Zoning — System administrators can partition attached devices
into restricted-access zones. A zone contains a set of devices that
can access each other. A zone member can be a port or the WWN of
the device attached to a port. (EMC
®
recommends that zones
contain only WWNs.) Ports and devices spread throughout
switches in a multiswitch fabric can be grouped into the same
zone.