Highest performance and scalability for the most demanding
enterprise SAN environments
IBM System Storage SAN768B
The IBM System Storage™ SAN768B
fabric backbone is designed to be the
premier platform for consolidation of
your data center connectivity, providing
high performance and highly available
data networking. Providing new levels
of performance with industry-leading
Premier platform for data center connectivity
8 Gbps Fibre Channel (FC) technology,
it is also the first member of the
IBM System Storage b-type family
Drive new levels of perform­
designed to exploit Brocade®’s new
Manage your Infrastructure
ance with 8 Gbps Fibre Channel
with greater flexibility and
(FC) technology
Data Center Fabric architecture.
The SAN768B interoperates with other
members of the IBM System Storage
Reduce total cost of ownership
Unify management framework
(TCO) through consolidation of
for consolidated and virtualized
network resources
Protect existing infrastructure
Improve energy efficiency by
investment while positioning for
combining higher bandwidth
future technologies
with reduced power
b-type and m-type families as well as
other fabrics.
It can be configured with a wide
range of connectivity options,
including 10, 8, 4, 2 and 1 gigabits
per second (Gbps) Fibre Channel,
up to 4 Gbps Fibre Connections
(FICON®), and Fibre Channel
over Internet Protocol (FCIP).
It is also designed to enable support
for emerging high-performance and
high-function network protocols,
including Fibre Channel over
Ethernet (FCoE).
The SAN768B is designed to serve
as the basis for transforming exist­
ing networks into a unified, highperformance data center fabric,
connecting applications with their
data and virtual servers with
virtual storage.
help manage and protect your enter­
The SAN768B is also a highly efficient
prise data in virtualized environments.
platform, delivering extremely high per­
These services are part of Brocade’s
formance in terms of watts per gigabit
Adaptive Networking strategy, which
of bandwidth. It requires significantly
includes Quality of Services (QoS), traf­
less power to deliver much greater
fic management and resource recovery
bandwidth, which helps make it consid­
erably more cost-effective than previous
QoS and traffic management applica­
tions help ensure that application work­
For a 768-port end user backbone
loads meet service levels if congestion
solution, for example, the SAN768B
occurs anywhere in the data path.
backbone with 8 Gbps SFPs provides
Resource recovery applications can
up to four times the end user perform­
detect stranded resources or ineffi­
ance per chassis (twice as many ports,
ciently used resources and reclaim or
each with twice the port performance);
reallocate them to optimize data flow
up to 60 percent more power efficient
according to pre-defined policies.
than the 4 Gbps SAN256M director;
and up to 25 percent more power
Investment protection and efficiency
efficient than the 4 Gbps SAN256B
To help enterprises protect their tech­
As a member of the IBM System
nology investments, the SAN768B fea­
Storage family of b-type products, the
tures backward compatibility with
Technical capabilities
SAN768B is designed to participate in
IBM b-type and m-type fabrics, as well
Each SAN768B contains redundant
fabrics containing other b-type and
interoperability with other fabrics. With
control processor modules (active/
m-type devices manufactured by
the SAN768B as the new, top tier in a
standby) and core blades, plus slots for
Brocade. This versatile hardware can
fabric infrastructure, it can connect
eight other blades. Each system also
serve as a new top tier (or backbone) in
to IBM TotalStorage® SAN256B,
includes two redundant and hot­
a complex fabric and provide connec­
IBM TotalStorage SAN140M and
swappable power supplies. The entire
tions to other b-type and m-type direc­
IBM TotalStorage SAN256M directors
system can operate on one power sup­
tors, switches and routers.
and also to b-type and m-type switches
ply. The optional SAN768B Pair of
and routers. By adopting an evolution­
Upgrade Power Supplies feature pro­
Adaptive Network Services
ary strategy rather than a “rip-and­
vides two additional power supplies.
The IBM System Storage SAN768B
replace” approach, enterprises can
Three redundant and hot-swappable
can be an expandable platform for intel­
save significant time, money and effort
fan units are included with each
ligent, policy-driven services that can
as they move forward while minimizing
system. The entire system can operate
disruption and risk.
on two fan units.
Available 16-port, 32-port and 48-port
longwave, 4 Gbps 30 Km extended
domains in the same fabric. The two
FC blades support link speeds of
distance longwave, 10 Gbps shortwave
SAN768Bs connected via ICLs must be
8, 4, 2 and 1 Gbps. The 10 Gbps FC
and 10 Gbps longwave.
mounted in the same cabinet or in
blade contains six 10 Gbps FC ports.
adjacent cabinets.
Each FC port supports full-duplex, non-
Full Fabric and Universal Port operation
blocking performance. The FC routing
are supported on all 8 Gbps and
The optional SAN769B FCIP/FC High
blade contains sixteen 4 Gbps FC ports
4 Gbps FC ports (F_Port and E_Port).
Performance Extension feature
and two GbE ports. A base system
FL_Port and Fibre Channel are sup­
enables the two GbE ports on the FC
does not include any port blades; at
ported on 16-port and 32-port blades.
Routing Blade. The feature includes the
least one blade is required for host,
SAN768B FICON w/CUP (Control Unit
following capabilities:
storage and SAN connectivity. All ports
Port) is available as an optional feature.
on a blade must be populated with SFP
optical transceivers.
FCIP trunking with exchangebased load balancing across all
links with the same “path cost to
Multi-tunnel support for up to eight
virtual tunnels per GbE port.
Compression over IP uses
hardware-based compression to
increase the bandwidth capability
of each IP link.
Fast Write over FCIP preacknowledges SCSI Write com­
mands to enhance performance for
writing to disk storage over long
distance IP links.
FC Write over FC link preacknowledges SCSI Write
Tape Write Pipelining over FCIP
pre-acknowledges portions of SCSI
Tape Write commands to enhance
performance for writing to tape
storage over long distance IP links.
All 8 Gbps FC switch blades support
ISL trunking. Up to eight 8 Gbps ports
Each port uses an optical transceiver to
can be combined into a single ISL trunk
convert electrical signals to optical
yielding a 64 Gbps logical connection.
pulses and optical pulses back to elec­
ISL trunking is not supported on the
trical signals. Each 10 Gbps port
10 Gbps FC switch blade.
requires an XFP optical transceiver,
while each 8 Gbps port requires either
Each SAN768B provides up to 384 FC
an 8/4/2 Gbps SFP optical transceiver
ports in one domain and four Inter-
or a 4/2/1 Gbps SFP optical trans­
Chassis Link (ICL) connections. The
ceiver. All 8 Gbps ports are capable of
optional SAN768B Inter-Chassis
automatically negotiating to the highest
Cable Kit and SAN768B Inter-
speed supported by the attached
Chassis License features enable con­
server, storage system, director, switch
nection to another SAN768B (both
or router. All Fibre Channel (FC) ports
systems must have the Inter-Chassis
can support Inter-Switch Link (ISL) con­
Cable Kit and Inter-Chassis License
nectivity between other SAN devices. IP
optional features). Each ICL provides
ports use a SFP optical transceiver that
32 trunked ISL connections, yielding a
supports 1 Gbps Ethernet (GbE). A
total of 128 connections between two
variety of SFP and XFP optical trans­
SAN768B chassis. Since each chassis
ceivers are supported, including 1 Gbps
can support up to 384 FC ports, con­
Ethernet, 4 Gbps and 8 Gbps
nection of two SAN768B chassis
shortwave, 4 Gbps 4 Km and 10 Km
together in a dual core configuration
yields up to 768 FC ports in two
The SAN768B is only supported in an
IBM TotalStorage SAN Cabinet
(2109-C36). One or two SAN768Bs can
be installed in one cabinet.
Software capabilities
Fabric OS® (FOS) is included with
each SAN768B and includes the
Enterprise Software Bundle, Advanced
Web Tools and Zoning, and contains all
functions necessary to operate a base
The Enterprise Software Bundle
includes Adaptive Networking Services,
Advanced Performance Monitoring,
Enhanced Group Management (EGM),
Extended Fabrics, Fabric Watch and
Trunking. The SAN768B is designed to
Two types of Quality of Service
(QoS) features enable traffic dif­
ferentiation and prioritization:
— Ingress Rate Limiting can
restrict throughput on the
ingress side of a port by
delaying the return of BB
credits to the external device.
— SID/DID Based
Prioritization is used to pri­
oritize the FC flow using a
Virtual Channel (VC) by
which an FC flow is assigned
to different behavior
The Toptalker feature is an addi­
tion to the existing performance
tools to help identify bandwidth
usage on a specific port.
operations to groups of devices (for
example: groups of SAN devices to
receive firmware downloads or configu­
ration uploads or downloads).
Extended Fabrics enables extension
of SAN fabrics beyond the Fibre
Channel standard of 10 Km by optimiz­
ing internal switch buffers to maintain
performance on ISLs at distances of
up to 500 Km.
Fabric Watch monitors mission-critical
switch operations.
Trunking enables FC packets to be
efficiently distributed across multiple
ISLs while preserving in-order delivery.
The Advanced Web Tools utility
enable non-disruptive software
Advanced Performance Monitoring
enables administration, configuration
helps identify end-to-end performance
and maintenance of fabric switches and
Adaptive Networking Services is a
usage by host or target pairs and is
set a features providing users with tools
designed to provide information for
and capabilities to incorporate network
capacity planning.
policies to ensure optimal behavior of a
Zoning can segment a fabric into vir­
tual private SANs.
SAN. FOS 6.0 introduces three new
Enhanced Group Management
features on the SAN768B fabric
(EGM) enables additional device-level
Brocade Fabric Manager (FM)
management for IBM b-type products
and Brocade Enterprise Fabric
and also allows large consolidated
Connectivity Manager (EFCM) are
separate software programs available to
provide advanced management func­
tions for large fabrics.
IBM System Storage SAN768B at a glance
Product characteristics
Product number
Base machine
Fibre Channel interfaces
FICON interfaces
IP interfaces
Hot-swap components
Rack support
Management software
Servers supported
Storage products supported
Fibre Channel switches supported
Fibre optic cable
Optional features
Base chassis includes the following components:
● Two control processor modules and two core module
● Two power supplies
● Three fan modules
● Fabric Operating System
● Enterprise Software Bundle (including Adaptive Networking, Advanced Performance
Monitoring, Enhanced Group Management, Extended Fabrics, Fabric Watch and Trunking)
● Advanced Web Tools and Zoning
● No switches blades are included in the base (at least one 8 Gbps or 10 Gbps Fibre
Channel (FC) switch blade or FC Routing Blade is required for server, storage or SAN
● Rack mounting kit, rack-mount power cords, service tools, serial cable and
8 Gbps E_Port, F_Port and FL_Port
4 gigabits per second (Gbps)
1 Gigabit Ethernet (GbE)
8 Gbps and 4 Gbps SFP and 10 Gbps XFP shortwave and longwave
All ports on a blade must be populated with optical transceivers
Control processor and core modules, power supplies, fan modules, FC and FC routing
blades, SFPs and XFPs
IBM TotalStorage SAN Cabinet (2109-C36) only
Fabric Operating System, Enterprise Software Bundle (including Adaptive Networking
Services, Advanced Performance Monitoring, Enhanced Group Management (EGM),
Extended Fabrics, Fabric Watch and Trunking), Advanced Web Tools and Zoning
IBM System z9® EC, z9 BC and zSeries® 990 and 900; IBM System p™ and selected
RS/6000® servers; IBM System i™ and selected AS/400® servers; IBM System x™ and
selected Netfinity® servers; other Intel®-based servers with Linux®, Microsoft® Windows®
2000 and Windows 2003; selected Sun™ and HP servers; IBM System Storage SAN
Volume Controller (SVC)
IBM System Storage DS8000™; IBM System Storage DS6000™; IBM System Storage
DS4000™; IBM TotalStorage Enterprise Storage Server®; IBM TotalStorage Enterprise NAS
Gateway 500; IBM System Storage n Series NAS Filers and Gateways; IBM TotalStorage
3580, 3588, 3590 and 3592 Tape Drives; IBM TotalStorage 3494, 3582, 3583 and
3584 Tape Libraries; IBM TotalStorage 3581 Tape Autoloader; IBM TotalStorage 3584 High
Availability Frame Model HA1; Other selected storage systems
IBM System Storage and IBM TotalStorage SAN b-type and m-type directors, switches
and routers; other directors, switches and routers manufactured by Brocade
Fibre optic cables with LC connectors are required and are available in various lengths in
single-mode and multi-mode formats
1-year; 24x7; same-day
Maintenance service options are available after warranty expiration
16-port, 32-port and 48-port 8 Gbps Fibre Channel switch blades; 10 Gbps Fibre Channel
switch blades; 16 FC + 2 IP FC routing blades; SFPs and XFPs; fibre optic cables; InterChassis Cable Kit; inter-chassis license; upgrade power supply; FICON w/CUP activation;
FCIP/FC extension
IBM System Storage SAN768B at a glance
Physical characteristics
Height (rack mount)
Depth (with door)
Depth (without door)
Weight (384 ports
fully populated)
Operating environment
Temperature (operating)
Humidity (operating)
61.24 cm/24.11"
43.74 cm/17.22"
73.20 cm/28.82"
61.19 cm/24.09"
103.50 kg/228.20 lbs
Altitude (operating)
10 to 40 degrees C (50 to 104 degrees F)
20% to 85% relative humidity (RH) non-condensing at
40 degrees C (104 degrees F), with a maximum gradient of
10% per hour
Up to 3 kilometers/10,000 feet
.00059 cu m/hr/350 cu ft/min
Electrical requirement
Nominal input voltage
Input line frequency
Heat dissipation
Inrush current
200 – 240Vac, Universal
47 – 63 Hz
1440 Watts or 4914 British thermal unit (Btu)
Maximum of 20 amps
© Copyright IBM Corporation 2008
IBM Systems and Technology Group
Route 100
Somers, New York 10589
Produced in the United States
February 2008
All Rights Reserved
IBM, the IBM logo, AIX, AS/400, DS4000,
DS6000, DS8000, Enterprise Storage Server,
FICON, Netfinity, OS/400, RS/6000, System i,
System p, System Storage, System x, System
z9, z/OS and zSeries are trademarks or
registered trademarks of International Business
Machines Corporation in the United States,
other countries or both.
Brocade and Fabric OS are registered
trademarks of Brocade Communications
Systems, Inc. in the United States, other
countries or both.
Intel is a registered trademark of Intel
Corporation or its subsidiaries in the United States and other countries.
For more information
IBM Business Partner or visit:
Linux is a registered trademark of Linus
Torvalds in the United States, other countries or
Microsoft and Windows are registered
trademarks of Microsoft Corporation in the
United States, other countries or both.
Contact your IBM representative or
Sun is a trademark of Sun Microsystems, Inc. in
the United States, other countries, or both.
UNIX is a registered trademark of The Open
Group in the United States and other countries.
IBM is not responsible for the performance or
interoperability of any non-IBM products
discussed herein. Performance data for IBM and
non-IBM products and services contained in this
document was derived under specific operating
and environmental conditions. The actual results
obtained by any party implementing such
products or services will depend on a large
number of factors specific to such party’s
operating environment and may vary
significantly. IBM makes no representation that
these results can be expected or obtained in
any implementation of any such products or
Other company, product and service names
may be trademarks or service marks of others.
This document could include technical
inaccuracies or typographical errors. IBM may
make changes, improvements or alterations to
the products, programs and services described
in this document, including termination of such
products, programs and services, at any time
and without notice. Any statements regarding
IBM’s future direction and intent are subject to
change or withdrawal without notice and
represent goals and objectives only. The
information contained in this document is
current as of the initial date of publication only
and is subject to change without notice.
IBM shall have no responsibility to update such