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IBM System Storage SAN42B-R Extension Switch
Meet disaster-recovery and business continuity objectives with industry-leading performance and scalability

IBM System Storage SAN42B-R

IBM Products
IBM Extension Switches
IBM System Storage SAN42B-R Extension Switch
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The IBM System Storage SAN42B-R extension switch is designed to maximize performance and scalability for large, complex environments. It is a purpose-built extension solution that securely moves more data over distance, faster-while minimizing the impact of disruptions. With enhanced extension capability and Fabric Vision technology, SAN42B-R delivers outstanding performance, strong security, continuous availability and simplified management to handle the unrelenting growth of data traffic between data centers in Gen 5 and Gen 6 Fibre Channel and FICON storage environments.

  • Move more storage data between data centers to meet increasing disasterrecovery and business continuity objectives with industry-leadin g performance and scalability
  • Encrypt storage data flows over long distances at full line rate without sacrificing performance
  • Provide load balancing and network resilience with Extension Trunking to increase wide area network (WAN) utilization and help protect against WAN link failures

Extension solution designed to maximize performance and scalability for large, complex environments

IT organizations continue to face the unrelenting growth of data being transferred between data centers and the changes driven by virtualized application workloads within Fibre Channel storage environments. Also faced with rising service level agreement (SLA) requirements and recovery expectations, enterprise data centers need their disaster-recovery infrastructure to help ensure fast, continuous and simple access to mission-critical data from anywhere in the world.

The IBM System Storage SAN42B-R extension switch is a purposebuilt extension solution that securely moves more data over distance, faster, while minimizing the impact of disruptions. With Gen 5 Fibre Channel, extension capability and Fabric Vision technology,1 SAN42B-R delivers outstanding performance, strong security, continuous availability and simplified management to handle the unrelenting growth of data traffic between data centers in Fibre Channel and IBM FICON storage environments. In addition, SAN42B-R is designed to help storage administrators replicate and back up large amounts of data over WAN quickly, securely, reliably and simply while minimizing operational and capital expenses.

A purpose-built extension platform for disaster recovery

The SAN42B-R switch provides an ideal platform for building a highperformance data center extension infrastructure for replication and backup solutions. It leverages any type of inter-data center WAN transport to extend open-systems and mainframe storage applications over distances that would otherwise be impossible, impractical or too expensive with standard Fibre Channel connections.

SAN42B-R addresses the most demanding disaster-recovery requirements. Twenty-four 16 Gbps Fibre Channel/FICON ports, sixteen 1/10 Gigabit Ethernet (GbE) ports and two 40 Gigabit Ethernet (GbE) ports provide the bandwidth, port density and throughput required to help maximize application performance over WAN connections.

Designed for maximum flexibility, this enterprise-class extension switch offers “pay-as- you- grow” scalability with capacity-on- demand upgrades. To meet current and future requirements, organizations can quickly and cost-effectively scale WAN rate from 5 Gbps to 40 Gbps per platform via software licenses to meet current and future requirements. With compression enabled, organizations can scale up to 80 Gbps application throughput, depending on the type of data and the characteristics of the WAN connection.

The SAN42B-R base configuration offers a comprehensive set of advanced services, including: Fabric Vision, Extension Trunking, Adaptive Rate Limiting, IPSec, Compression and Extended Fabric. Optional value-add licenses for Integrated Routing (FCR), FICON Control Unit Port (CUP) and Advanced FICON Accelerator are also available to help address a variety of storage networking challenges.

Built for large-scale, multi- site data center environments, SAN42B-R is ideal for data protection for open systems and mainframes and for multi-site synchronous and asynchronous storage replication.


Industry-leading performance and scalability for data migration

The advanced performance and network optimization features of SAN42B-R enable replication and backup applications to send more data over metro and WAN links in less time. In addition, they help optimize WAN bandwidth.

SAN42B-R is designed to meet the evolving requirements of highly virtualized data centers, enabling cost-effective extension solutions over distances up to 37,500 kilometers (23,400 miles).

What’s more, SAN42B-R can also help maximize replication and backup throughput over long distances using data compression, disk protocol acceleration, WAN-optimized TCP, and additional advanced features, as well as other extension networking technologies.

Continuous availability between data centers

Today’s organizations depend on fast, reliable access to data wherever and whenever needed, regardless of location. The ramifications and potential business impact of an unreliable disaster- recovery and data protection infrastructure are greater than ever.

SAN42B-R provides a suite of features to help ensure continuous availability of storage extension infrastructure-from pre-deployment validation tools to advanced network failure recovery technologies. For example, it has built-in tools to help validate the setup of WAN links, network paths and proper setup of configurations before deployment.

SAN42B-R, leveraging the core technology of Gen 5 Fibre Channel platforms, combines enterprise-class availability with innovative features and nondisruptive firmware upgrades to support always-on business operations and maximize application uptime. These capabilities enable a high-performance and highly reliable network infrastructure for disaster-recovery and data protection.

Simplified management and robust network analytics

SAN42B-R includes Fabric Vision technology to help simplify monitoring, maximize network availability and dramatically reduce costs. Featuring innovative monitoring, management and diagnostic capabilities, Fabric Vision technology helps administrators avoid problems before they impact operations- and their SLAs. Some of the Fabric Vision technology1 features supported by SAN42B-R are: Monitoring and Alerting Policy Suite (MAPS), Fabric Performance Impact Monitoring (FPI), Dashboards, Configuration and Operational Monitoring Policy Automation Services Suite (COMPASS), ClearLink Diagnostics, Flow Vision, Forward Error Correction (FEC) and Credit Loss Recovery.

Using IBM Network Advisor3 software with SAN42B-R can also simplify storage networking management, helping administrators proactively diagnose and resolve issues to maximize uptime, increase operational efficiency and reduce costs.

Integrated architecture and management

SAN42B-R utilizes the same Fabric Operating System (FOS) that supports the entire IBM System Storage b-type Fibre Channel family. This helps ensure continuous interoperability with advanced features supported through Fabric OS version releases such as Integrated Routing, FICON Management Service (FMS), Extension Trunking, Fabric Vision technology, and Extended Fabrics.

In addition, organizations can perform management and administrative tasks through familiar management tools, including IBM Network Advisor, Web Tools, SAN Health Utility tool and the Command Line Interface (CLI). Moreover, optional FICON CUP capabilities enable legacy management applications to support IBM FICON environments.


Move more storage data

The SAN42B-R extension solution enables moving more storage data between data centers to meet disaster-recovery and business continuity objectives with industry-leading performance and scalability.

Consolidate storage traffic

Consolidate Fibre Channel and IBM FICON storage traffic from heterogeneous devices for high-speed, high-availability and secure transport between data centers.

Pay-as-you-grow scalability

Designed for maximum flexibility, the extension switch offers pay-as-you-grow scalability with capacity-on-demand upgrades to quickly and cost-effectively scale WAN rate and add bandwidth on demand.


SAN42B-R Extension Switch Specifications
System Architecture
Enclosure 2U chassis designed to be mounted in a 19-in. cabinet
Fibre Channel ports 24 ports, 16 Gbps, universal (E, F, M, D, and EX ports)
Ethernet ports 16 ports of 1/10 GbE and 2 ports of 40 GbE (VE)
Scalability Full fabric architecture with 254 switches, maximum
Certified Maximum
  • Single fabric: 56 domains, 7 hops
  • Multiprotocol routing fabric: 19 hops
Fibre Channel performance Auto-sensing of 2, 4, 8, and 16 Gbps port speeds
FCIP Ethernet interfaces 1 GbE, 10 GbE, and 40 GbE
b-type trunking Up to eight 16 Gbps ports per b-type trunk; up to 128 Gbps per trunk. There is no limit to how many trunk groups can be configured in the switch.
Fabric Latency 700 nanoseconds (ns) with no contention, cut-through routing at 16 Gbps
Maximum frame size 2112-byte payload
Maximum maximum transmission unit (MTU) size Ethernet Jumbo Frames at 9,000-bytes
Classes of service Class 2, Class 3, Class F (inter-switch frames)
Port types F_Port, E_Port, EX_Port, (FCR E_Port), D_Port (Diagnostic), M_Port (Mirror), and self-discovery based on switch type (U_Port), VE Port (FCIP and virtual E Port)
Data traffic types Fabric switches supporting unicast, multicast (255 groups), and broadcast
USB One USB port for system log file downloads or firmware upgrades
Media types Fibre Channel:
  • b-type hot-pluggable small form factor (SFP) and SFP+
  • Short wavelength (SWL), long wavelength (LWL)
  • Extended long wavelength (ELWL) transceivers (available wavelength options vary for 8 Gbps and 16 Gbps SFPs)


  • b-type hot-pluggable SFP and SFP+
  • Short reach wavelength (SRWL)
  • Long reach wavelength (LRWL)
  • Extended long wavelength (ELWL)
  • Copper SFP and SFP+ transceivers (available reach options vary: 1 GbE, 10 GbE, and 40 GbE)
Fabric services Fabric services:
  • Simple Name Server (SNS)
  • Registered state change notification (RSCN)
  • Network Time Protocol (NTP), remote authentication dial-in user service (RADIUS), Reliable Commit Service (RCS)
  • Dynamic Path Selection (DPS)
  • Exchange-based routing
  • Device-based routing
  • Port-based routing, lossless
  • Advanced zoning
  • Web tools
  • Adaptive Networking with QoS
  • Extended fabric, ISL trunking
  • Fabric Vision technology
  • Advanced Extension

Optional fabric services:

  • Fibre Channel routing (FCR)
  • FICON Management Server (FMS)
  • Advanced Accelerator for FICON
Extension services Extension Trunking, Adaptive Rate Limiting (ARL), WAN Test Tool (Wtool), Open Systems Tape Pipelining (OSTP), FastWrite (FCIP-FW), QoS Marking, Bandwidth Enforcement, PerPriority TCP QoS, (PTQ), Advanced Extension, and Integrated Routing (FCR)
Optional upgrade license The following optional extension features can be enabled by license keys:
  • Local area network (LAN) Rate Upgrade License 1 and 2, which enables additional WAN throughput at 10 Gbps level and unlimited level (up to system maximum of 40 Gbps)
  • FICON Management Server, where the Control Unit Port (CUP) enables host control of switches in mainframe environments.
  • Advanced Accelerator for FICON, which accelerates IBM Global Mirror data replication and z/OS host connection to Teradata systems
Supported Management
  • Secure Shell (SSH2)
  • Hypertext Transfer Protocol (HTTP, HTTPS)
  • Simple Network Management Protocol (SNMP V1, V3)
  • Telnet
  • SNMP (FE Management Information Base (MIB), FC Management MIB)
  • Web tools
  • IBM Network Advisor Enterprise or IBM Network Advisor Professional Plus (optional)
  • Command-line interface (CLI)
  • Lightweight Directory Access Protocol (LDAP)
  • AES-GCM-256 IPsec encryption on ISLs
  • AES-GCM-256 IPsec encryption on virtual ISLs (VE_Port)
  • DH-CHAP (between switches and end devices)
  • FCAP switch authentication
  • FIPS 140-2 L2-compliant
  • IP filtering
  • LDAP with IPv6
  • OpenLDAP
  • Port Binding
  • User-defined Role-Based Access Control (RBAC)
  • Secure Copy (SCP)
  • Secure RPC
  • SFTP
  • SSH V2
  • SSL
  • Switch binding
  • Trusted switch
Management access
  • 10/100/1000 Ethernet (RJ-45), in-band over Fibre Channel ports
  • Serial port (RJ-45) and one USB port
Diagnostics POST and embedded online or offline diagnostics, including the following tools:
  • z D_Port
  • FCIP ping
  • FCIP traceroute
  • FCping z Pathinfo (FCtraceroute)
  • wtool
  • Ftrace
Enclosure Back-to-front airflow, 2U, 19-in. EIA-compliant, power from back
Size Width: 44 cm (17.3 in.)
Height: 8.6 cm (3.2 in.)
Depth: 60.9 cm (24.01 in.)
System Weight 19 kg (42.0 lb) with two power supplies, without SFP or SFP+
Temperature Operating: 0°C to 40°C (32°F to 104°F)
Non-operating: 25°C to 70°C (13°F to 158°F)
Relative humidity (noncondensing) Operating: 10% to 85%
Non-operating: 10% to 90%
Altitude (above sea level) Operating: 0 to 3000m (9842 ft)
Storage: 0 to 12 km (39,370 ft)
Shock Operating: 20 g, 11 ms, half-sine
Non-operating: 33 g, 11 ms, half-sine, 3/eg axis
Vibration Operating: 1.0 g sine, 0.5 grms random, 5 to 500 Hz
Non-operating: 2.4 g sine, 1.1 grms random 5 to 500 Hz
Heat dissipation Maximum: 478 BTU/hr
Power supply Dual hot-swappable redundant power supplies
Power inlet C14, which requires a C13 plug
Input voltage 90 to 264 V ac nominal
Input line frequency 47 to 63 Hz nominal
Power Short-range optics: Nominal 388 watts/1,324 BTU/hr; maximum 454 watts/1,550 BTU/hr
Long-range optics: Nominal 426 watts/1,454 BTU/hr; maximum 492 watts/1,679 BTU/hr


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Pricing Notes:

IBM Products
IBM Extension Switches
IBM System Storage SAN42B-R Extension Switch
Our Price: Request a Quote