Sun Microsystems StorageTek SL500 Reference Manual

Topologies
38 SL500: Interface Reference Manual • July 2008 Revision: F • 96122
Loop with a Switch and a Hub
A public arbitrated loop can include a hub that is attached to a fabric element, in
this case a switch (see FIGURE 4-3).
Direct Fabric Attachment
The advantage of attaching a library to a fabric is that the fabric can aid the
library’s communication with a variety of devices. A fabric element might:
■ Attach N*_Ports with different media types, media rates, or classes of service
■ Attach arbitrated loops
■ Serve as a root element for distributed fabric elements
A fabric element might support different:
■ Port types
■ Classes of service
■ Media types
■ Media rates
■ Address assignment methods
■ Frame routing techniques
After a frame leaves the source N*_Port and enters the fabric, each fabric element
selects the next link toward the destination N*_Port. Usually the path includes two
links between the source N*_Port and the destination N*_Port.
FIGURE 4-3 A Loop with a Hub Attached to a Switch
HBA
HBA
NL_PORT
NL_PORT
N_PORT
S
WIT
C
H
L204
_
161
TAPE
LIBRARY
HUB
F_PORT
F_PORT
F_PORT
N_PORT
N_PORT
FL_PORT
TAPE
NL_PORT
LIBRARY
FL_PORT

Sun Microsystems StorageTek SL500 Specifications

General

Brand	Sun Microsystems
Model	StorageTek SL500
Category	Storage
Language	English