Cisco MDS 9148S (DS-C9148S-K9) Full Product Description

1. Short Sales Title

2. Official Product Overview

Core Hardware Differentiators vs Older DS-C9148-K9 (8G model)

1. Native 16Gbps Fibre Channel autosensing SFP+ ports (backward compatible with 2/4/8/16G), full line-rate non-blocking per-port bandwidth, DS-C9148-K9 only max 8G FC supportCisco.
2. Reworked port licensing model: Ships with12 active ports factory default, expandable in 12-port increments to 24, then full 48 ports via single M9148S-PL12 license per tier (DS-C9148-K9 uses 8-port licensing blocks)Cisco.
3. Optimized four independent hot-swappable fan modules (minimum two fans required for operation, survives two fan failures) vs dual fan trays on MDS 9148, stronger thermal headroom for dense 16G transceiver loadsCisco.
4. Fixed back-to-front airflow (air intake rear power side, exhaust front port panel, blue color-coded PSUs/fans) optimized for modern hot-aisle data center rack containment; DS-C9148-K9 uses front-to-back cold aisle airflow, PSUs/fans non-interchangeable between S and non-S variantsCisco.
5. Upgraded ASIC hardware with native slow drain detection, VOQ virtual output queuing, expanded FC address table and larger TCAM scale optimized for multi-tenant MPLS VSAN deploymentsCisco.
6. Heavy-duty 300W AC redundant power rails stable under full 48×16G SFP+ populated load, same wattage as MDS 9148 but matched to higher 16G power draw.
7. Built-in POAP zero-touch provisioning, IPv6 over FC, EVPN-FC interoperability and enhanced FIPS 140-2 security hardening absent from legacy SAN-OS MDS 9148 switchesCisco.

Core High-Availability Design

Model Suffix Breakdown

• DS-C: Cisco MDS storage switch part number prefix
• 9148S: MDS 9100-S modern 16G fixed fabric series, total 48 autosensing SFP+ Fibre Channel ports, back-to-front hot aisle airflow
• K9: Standard AC power SKU with full multilayer NX-OS enterprise/carrier feature license (separate HV DC telecom variant DS-C9148S-HV-K9 sold independently; PSUs/fans cannot be mixed between AC/HV SKUs)

Chassis Port & Hardware Layout Definition

1. Front Fibre Channel Ports: 48×hot-swappable SFP+ slots, autosensing 2/4/8/16 Gbps Fibre Channel, every port full non-blocking line-rate bandwidth
   • Factory default: Only 12 ports licensed active
   • Expand via M9148S-PL12 12-port incremental software licenses to 24 ports, then full 48 ports
2. Out-of-Band Management Interfaces
   • RJ45 RS232 serial console port for local CLI access
   • Mini USB dual console port
   • Isolated 10/100/1000BASE-T out-of-band Ethernet management port
   • External USB Type-A flash storage slot for NX-OS image upgrades, configuration backup and syslog export
   • Physical reset button for factory default configuration recovery
3. Front Diagnostic LED Bank: Global system status, power supply A/B, fan module, port link/activity, fault alarm, UID blue beacon indicator
4. Rear Compartment Layout: Dual independent hot-swappable 300W AC power supply bays supporting 1+1 N+1 power redundancy
5. Front lower fan bays: Four separate hot-swappable multi-fan variable-speed fan assemblies (DS-C48S-FAN)
6. Airflow Specification: Back-to-front cold air intake at rear power supply panel, hot air exhausted from front port panel (hot aisle rack optimized blue color-coded hardware; no front-to-back cold aisle variant for DS-C9148S-K9)Cisco

Supported Transceivers & Power Options

1. Fibre Channel SFP+ transceivers (sold separately):
   • DS-SFP-FC16G-SW: 16Gbps short-wave multimode (500m)
   • DS-SFP-FC16G-LW: 16Gbps long-wave single-mode (10km)
   • Backward compatible with 8G / 4G / 2G FC SFPs for legacy storage interoperation
2. Power supply compatibility: DS-C48S-300AC 300W AC PSUs exclusive to DS-C9148S-K9; HV DC 300W PSUs for DS-C9148S-HV-K9 variant, non-interchangeable hardware
3. No Ethernet downlink ports; purpose-built exclusively for Fibre Channel block storage SAN workloads

3. Hardware & Physical Specifications

Core SAN Switching & Routing Performance

• Total non-blocking fabric aggregate capacity: 768 Gbps full-duplex system-wide bandwidth
• Wire-speed forwarding rate: Up to 768 Mpps Fibre Channel frame switching at full 16G line rate
• Low-latency virtual output queuing (VOQ) shared packet buffer pool optimized for NVMe, OLTP database and multi-tenant VPN burst I/O
• FC address table capacity: 1,048,576 N_Port identifiers (massive scale for blade server rack deployments)
• Maximum VSANs: 4094 isolated virtual storage fabrics
• Maximum active zone sets: 256 zone sets, up to 2000 zones per fabric
• Jumbo FC frame MTU support: Up to 9000 bytes
• Port modes supported: F (Fabric host), FL (Loop), TL (Extended Loop), E (ISL), TE (Extended ISL), NP (NPV edge host)
• Link aggregation: PortChannel for multi-port FC ISL trunking, maximum 16 FC ports per logical bundle (higher than MDS 9148 8-port limit)Cisco
• NPV/NPIV native feature: Consolidate thousands of server host ports upstream to MDS core directors without core fabric overhead
• Slow drain detection hardware ASIC: Automatically isolate slow storage targets to prevent fabric-wide buffer credit starvation storms

Power & Cooling System

• Power supply bays: 2 hot-swappable redundant slots, each 300W AC PSU fully powers full chassis independently (1+1 N+1 failover protection)
• AC input voltage range: 100–240V 50/60Hz universal auto-ranging AC
• Fan modules: Four separate hot-swappable multi-fan assemblies; minimum two functional fans required to avoid thermal shutdown, up to two fan failures tolerated with four-fan full redundancy
• Airflow direction: Back-to-front rear cold intake, front hot exhaust (hot aisle containment racks)
• Real-time monitoring: Fan RPM, internal chassis temperature, PSU voltage, SFP+ optical power, port and module fault logging via console syslog and SNMP v1/v2c/v3 traps; major thermal alarm threshold at 55°C

Physical & Environmental Parameters

• Rack form factor: 1 RU standard 19-inch horizontal rack mount
• Dimensions (H × W × D): 4.37 cm × 43.94 cm × 41.50 cm (1.72 × 17.3 × 16.3 inches)
• Bare chassis weight: 8.4 kg (18.5 lbs) without power supplies/fan modules; fully loaded max weight 9.0 kg (19.84 lbs) with dual PSUs and four populated fan trays installedCisco
• Operating temperature range: 0°C to 40°C (32°F–104°F); certified altitude up to 2000 meters
• Storage temperature range: -40°C to 70°C (-40°F–158°F)
• Relative humidity: 10%–90% non-condensing operating; 5%–95% non-condensing storage
• Compliance Certifications: FCC Class A, UL 60950-1, CE, VCCI Class A, NEBS Level 3, RoHS compliant, FIPS 140-2 Level 2 validated
• Typical power consumption: 125W fully populated with 48×16G SFP+ transceivers under full traffic load
• MTBF: 310,000 hours under standard data center operating conditions

Out-of-Band Management Interfaces

• Dual local CLI access: RJ45 RS232 serial port + Mini USB console port
• Dedicated isolated 10/100/1000BASE-T out-of-band Ethernet management port
• External USB flash storage for offline NX-OS image and configuration archives
• Front panel multi-status LED bank for real-time hardware health visibility

4. Full NX-OS Multilayer Feature Set (Cisco NX-OS MDS Release 6.2 / 7.x / 9.x)

Layer 2 Fibre Channel Switching & Fabric Services

• VSAN Virtual Storage Area Network: Logical fabric isolation for multi-application/multi-tenant storage segmentation (up to 16 VSANS base license, expandable)Cisco
• Hard port zoning + soft WWN zoning for granular host-storage access control
• Full FICON protocol support for IBM mainframe disk/tape storage connectivity
• Inter-Switch Link (ISL) trunking, PortChannel load balancing across mixed 8G/16G FC ports (max 16-port bundles)
• DTP Fibre Channel trunk negotiation, FSPF fabric dynamic domain ID routing
• Local SPAN, RSPAN, ESPAN enhanced remote SAN traffic mirroring for multi-session performance troubleshooting
• Broadcast/multicast storm suppression per FC port to eliminate fabric flooding outages
• NPV N_Port Virtualizer edge switch mode for large core-edge SAN scaling
• Slow drain detection and congestion isolation hardware feature to mitigate buffer credit starvation
• POAP Power On Auto Provisioning zero-touch switch deployment for mass access rack rollouts

Multilayer Storage Routing & Multicast Features

• FSPF Fibre Channel Shortest Path First dynamic fabric routing for multi-switch SAN topologies
• PIM-SM IP multicast for cross-fabric backup replication traffic
• Static FC route configuration for cross-VSAN inter-fabric connectivity
• Licensed IVR Inter-VSAN Routing feature for controlled data movement between isolated VSANs
• Native MPLS service suite (carrier-grade differentiator): MPLS LDP, VPLS, VPWS, EVPN-FC interoperability, MPLS IPv4/IPv6 dual-stack VPN support
• PIM-SSM optimized for disaster recovery synchronous/asynchronous storage replication
• Static FC route redistribution between VSAN and MPLS domains

Advanced SAN QoS & Traffic Prioritization

• Four hardware priority queues per Fibre Channel port for tiered storage traffic classification
• Ingress frame policing, egress bandwidth shaping to throttle low-priority backup/replication streams
• Pre-built QoS templates for production OLTP, NVMe flash storage, tape backup, and disaster recovery replication streams
• Dedicated high-priority queue for low-latency real-time unified communications and database workloads
• Medianet media optimization for enterprise video and telepresence storage workflows

Enterprise & Service Provider SAN Security Suite

• Port security: Static WWN locking to block unauthorized server/storage device attach
• RBAC Role-Based Access Control granular CLI user privilege partitioning
• SSHv2 encrypted remote CLI management, SNMPv3 secure monitoring, encrypted startup configuration files
• DH-CHAP mutual authentication for ISL inter-switch link fabric authentication
• Port lockdown, VSAN read-only access permissions, full audit logging for all fabric configuration changes
• FIPS 140-2 validated security compliance for government and financial regulated environments
• Cisco TrustSec security group tagging for end-to-end policy segmentation across campus and data center domains
• IPv6 over Fibre Channel support for modern dual-stack management networks

Monitoring & SAN Management Tools

• Cisco DCNM-SAN centralized graphical SAN fabric monitoring, provisioning and REST API automation
• Isolated out-of-band Ethernet management port for offline device access during fabric outages
• External USB flash storage for offline NX-OS image upgrades, configuration backup archives and syslog export
• Cisco Discovery Protocol (CDP) automatic MDS fabric neighbor device discovery
• Real-time storage telemetry: Port throughput, latency, frame error counters, SFP+ optical power diagnostics
• Event notification via email, syslog and SNMP traps for fabric fault alerting
• GOLD generic online diagnostics for continuous hardware health validation without traffic interruption

5. High Availability Capabilities (Core Differentiators vs DS-C9148-K9 8G Model)

1. Dual hot-swappable high-wattage 300W AC redundant power supplies (1+1 power failover protection, stable under full 48×16G port load)
2. Four redundant variable-speed hot-swappable fan modules with multi-fan fault tolerance (survive two fan failures without SAN outage)
3. Full OIR Online Insertion and Removal support for fan tray, power supplies and SFP+ transceivers; live FRU replacement without chassis power shutdown or SAN traffic drop
4. Native 16G full non-blocking per-port Fibre Channel bandwidth (DS-C9148-K9 limited to maximum 8G line rate)
5. Pay-as-you-grow 12-port incremental licensing scaling from 12 base active ports up to full 48 ports, simplified licensing tiers vs 8-port blocks on MDS 9148
6. VSS dual-chassis virtual switching capability to pair two DS-C9148S-K9 into single logical redundant core with sub-second convergence
7. Back-to-front hot-aisle optimized airflow fully compatible with modern data center rack containment architectures
8. Expanded VOQ buffer, TCAM and routing table scale optimized for MPLS multi-tenant carrier PoP deployments
9. Modern NX-OS software stack with native EVPN, POAP and IPv6 over FC features absent from legacy SAN-OS MDS 9148 switches
10. Limitation: Fixed compact 1RU chassis with no modular port card expandability like MDS 9200/9509 directors, no native 32G FC generation support

6. Typical Deployment Scenarios

1. Medium Virtualized Data Center Rack-Scale Edge SAN Switch
   Compact 1RU rack form factor fits standard server edge rack positions; scalable pay-as-you-grow 12-port licensing allows customers to start with minimal 12 ports and expand to full 48 as virtualization and 16G flash storage capacity grows, consolidating hundreds of virtual machine hosts and high-performance NVMe disk arrays in leaf-spine SAN architectures.
2. Large Multi-Building Enterprise Campus Core-Edge SAN Fabric
   Multiple DS-C9148S-K9 edge switches deployed per building rack, utilizing mixed 8G/16G ISL trunk links to central MDS 9700 core director, forming unified enterprise-wide VSAN-separated production, test and backup storage fabrics for tens of thousands of end-users.
3. Large Regional Mission-Critical Headquarters / Government SAN
   Financial, healthcare and government headquarters storage deployments require complete dual power + multi-fan hardware redundancy to avoid site-wide catastrophic storage outages; integrates FICON mainframe DR replication, MPLS VPN multi-tenant segmentation and high-density blade server rack consolidation in a space-efficient 1RU chassis.
4. Medium Service Provider Multi-Tenant PoP Edge Storage Switch
   Native full MPLS/VPLS/EVPN carrier-grade feature set and massive FC address table scale make DS-C9148S-K9 ideal for carrier PoP edge deployments, terminating hundreds of 16G enterprise customer access circuits and high-speed core backbone trunks with logical VSAN multi-tenant isolation.
5. Legacy MDS 9148 8G SAN Hardware Refresh Upgrade
   Drop-in performance upgrade for aging 8G MDS 9148 fixed fabric switches, fully backward compatible with existing 4G/8G Fibre Channel SFP transceivers while unlocking native 16G line-rate bandwidth, four-fan fault tolerance, MPLS carrier-grade feature set and modern NX-OS automation workflows.

7. Standard Package Contents

Items Sold Separately (Not Included)

• Dual 300W AC hot-swappable redundant power supply units (airflow-specific PSUs non-interchangeable with cold-aisle front-to-back variants)
• DS-C48S-FAN integrated four-slot hot-swappable variable-speed fan module
• M9148S-PL12 12-port incremental software activation licenses to expand active FC port count
• SFP (1G/4G/8G) / SFP+ (16G) optical fiber transceivers for all chassis FC ports
• RS232 serial console rollover cable, mini USB console cable
• USB flash memory sticks for NX-OS image and configuration storage
• Fibre channel patch cords, cable management accessories, rack cable guides

Short Commercial Catalog Version (For Quotation & Datasheet Use)