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DS-C9148T-24PITK9 – 48 ports – managed – rack-mountable
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DS-C9148T-24PITK9 Description
Cisco DS-C9148T-24PITK9 is a 48-port 32-Gbps Fibre Channel switch bundle in the MDS 9148T family, shipping with port-side intake airflow components for hot-aisle/cold-aisle compatibility. It enables 24 active ports out of the box and grows to 48 via 8-port Port-On-Demand licenses, protecting CapEx while maintaining line-rate performance across autosensing 4/8/16/32-Gbps FC links . The platform integrates mature SAN tooling (SPAN, FC traceroute, diagnostics) and modern telemetry to accelerate troubleshooting and capacity planning . It supports VSAN-based isolation, IVR, and FC-SP for secure multi-tenant SANs, with programmatic control via NX-OS CLI, SNMP, and out-of-band Ethernet/USB management . Red (intake) fan modules and matching PSUs keep airflow direction consistent; all modules in the chassis must use the same airflow type .
Key Features
Scalable 32G Fibre Channel edge
48 physical ports with 24 active out of the box, line-rate, low-latency switching for all-flash arrays and high-IOPS hosts; grow via POD licensing without hardware swaps.
NVMe/FC ready (future-proof, forward-compatible)
seamless transition from SCSI/FCP to NVMe/FC on the same fabric, keeping policies and workflows consistent.
Built-in visibility and telemetry
hardware-assisted SAN Analytics, slow-drain detection, ISL/HBA diagnostics, and streaming telemetry for faster root-cause analysis and capacity planning.
Enterprise-class resiliency
hot-swappable dual PSUs and fans, port-channeling for ISL resiliency, and consistent performance for 24×7 data-center operations.
Virtualization and segmentation
VSANs, Smart/Auto Zoning, and IVR (license) enable secure tenant/app isolation with granular QoS and simplified change control.
Intake airflow variant
port-side intake design to match rack cooling policies while maintaining compact 1RU footprint and standard 19-inch rack mounting.
Applications Scenarios
Enterprise data centers and virtualization clusters
predictable throughput for large VM farms, VDI, and microservices platforms; per-flow and per-VM insights aid performance tuning.
All-flash storage and mission-critical databases
low-latency, non-blocking 32G FC for OLTP/ERP, analytics, and backup windows that must complete on time.
Compliance-heavy and research environments
finance and healthcare require isolation and auditability (VSANs, FC-SP); R&D/HPC benefits from deterministic latency and telemetry-driven operations.
Front View
|
1 |
Serial console port |
7 |
Activity status LED |
|
2 |
System status LED |
8 |
Ethernet management ports (2) |
|
3 |
Power status LED |
9 |
Fixed FC ports |
|
4 |
Fan status LED |
10 |
FC port status LEDs (48) |
|
5 |
USB port |
11 |
Airflow grill |
|
6 |
Link status LED |
Rear View
|
1 |
Power supply failure status LED |
6 |
Power supply status LED |
|
2 |
Power supply unit fan |
7 |
Power supply units (2 units) |
|
3 |
Power supply unit handle |
8 |
Chassis fan modules (4 units) |
|
4 |
Unswitched power receptacle |
9 |
Chassis fan module release latches (8) |
|
5 |
Power supply unit latch release |
|
1 |
Power supply unit slot 1 |
4 |
Chassis fan module slot 3 |
|
2 |
Chassis fan module slot 1 |
5 |
Chassis fan module slot 4 |
|
3 |
Chassis fan module slot 2 |
6 |
Power supply unit slot 2 |
Model Selection Guide – DS-C9148T-24PITK9
|
Common requirement scenario |
Suitable? Recommendation |
|---|---|
|
Build a new 32G FC access/edge for all-flash arrays |
Suitable. 48 physical ports with 24 active deliver predictable, low-latency line-rate for AFA and high-IOPS hosts; expand to 48 via POD as needed. |
|
Start with 24 ports and scale later without downtime |
Highly suitable. Use port-on-demand licensing to scale in steps to 48; avoid forklift upgrades and align spend with growth. |
|
Plan to adopt NVMe/FC alongside existing SCSI/FCP |
Suitable. NVMe/FC-ready; coexistence on the same links preserves investments and policies. |
|
Need built-in visibility, telemetry, and faster troubleshooting |
Suitable. Hardware-assisted SAN Analytics, slow-drain detection, and model-driven telemetry reduce MTTR and support capacity planning. |
|
Dense virtualization and per-VM/per-flow insight |
Suitable. VM-aware visibility (with capable HBAs) plus analytics helps pinpoint noisy neighbors and bottlenecks. |
|
Layered design using NPIV/NPV to simplify operations |
Suitable. Use as NPIV core with NPV edge to scale host ports cost-effectively; Smart/Auto Zoning reduces manual configuration. |
|
Strict HA requirements (redundant power, cooling, links) |
Suitable. Dual hot-swap PSUs/fans and ISL port-channels improve fabric availability for 24×7 workloads. |
|
Data-center airflow policy requires port-side intake |
Ideal. This SKU is the intake variant; align airflow with hot/cold-aisle layouts and adjacent equipment. |
|
Reuse existing 8G/16G optics/HBAs initially |
Suitable. Autosensing 4/8/16/32-Gbps ports let you deploy today and upgrade optics/HBAs to 32G later. |
|
Require robust links (FEC, buffer-to-buffer credit recovery) |
Suitable. Features that mitigate bit errors and credit loss help maintain throughput under suboptimal link conditions. |
|
Security and isolation for regulated environments |
Suitable. VSANs, RBAC, TACACS+/RADIUS/LDAP/AD, FC-SP (DH-CHAP), and optional link encryption support compliance goals. |
|
Unified management and automation at scale |
Suitable. NX-OS CLI/SSH, REST/NX-API, Python/Ansible; managed via Cisco NDFC/DCNM for single-pane ops. |
|
Limited to 1RU with careful power/cooling planning |
Suitable. Compact 1RU chassis with redundant cooling and PSU options fits common rack/power designs. |
|
Need more than 48 FC ports or very long-distance links |
Not ideal. Consider higher-port fixed switches (e.g., 96-port models) or director-class platforms for large scale or long-haul/B2B credit needs. |
Product Comparison
|
Parameter |
DS-C9148T-24PITK9 |
DS-C9148T-48PK9 | |
|---|---|---|---|
|
Family |
MDS 9148T |
MDS 9148T |
MDS 9148T |
|
Physical FC ports |
48 |
48 |
48 |
|
Active ports (base) |
24 |
24 |
48 |
|
Port expansion |
8-port POD to 32/40/48 |
8-port POD to 32/40/48 |
N/A (max) |
|
Port speeds |
4/8/16/32-Gbps autosensing |
4/8/16/32-Gbps autosensing |
4/8/16/32-Gbps autosensing |
|
Line-rate performance |
Yes (on licensed ports) |
Yes (on licensed ports) |
Yes |
|
Airflow type |
Port-side intake (red) |
Port-side exhaust (blue) |
Intake or exhaust options |
|
PSU/fan rules |
All modules must match airflow |
All modules must match airflow |
All modules must match airflow |
|
HA hardware |
Hot-swap dual PSUs and fans |
Hot-swap dual PSUs and fans |
Hot-swap dual PSUs and fans |
|
Management I/O |
RS-232 console, USB, 10/100/1000 mgmt |
Same |
Same |
|
SAN analytics & tools |
Diagnostics, SPAN, FC traceroute |
Same |
Same |
|
Form factor |
1RU fixed switch |
1RU fixed switch |
1RU fixed switch |
Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Product model | DS-C9148T-24PITK9 (MDS 9148T series) | Form factor | 1RU fixed FC switch |
| Physical FC ports | 48 x SFP+/SFP28 Fibre Channel | Base licensed ports | 24 active, scalable to 48 |
| Port speeds | Auto-sensing 4/8/16/32Gbps | Performance | Non-blocking, line-rate on licensed ports |
| Aggregate bandwidth | Up to 1.536Tbps | Latency | Low, cut-through switching |
| Expansion model | Port-On-Demand in 8-port steps | Port-channel | ISL PortChannels for resiliency |
| Protocols | FCP, NVMe/FC | Fabric services | VSANs, IVR (license), Smart/Auto Zoning, QoS |
| Analytics/telemetry | Hardware-based SAN Analytics, model-driven telemetry | Diagnostics | ISL/HBA diagnostics, slow-drain detection, SPAN/RSPAN |
| Management | NX-OS CLI/SSH, SNMP, REST/NX-API | Controller | Cisco NDFC/DCNM |
| High availability | Hot-swappable dual PSUs and fans | Airflow | Port-side intake (red) variant |
| Power | AC PSU options; 1 required, 2 for redundancy | Cooling | Redundant hot-swappable fan modules |
| Security | RBAC, TACACS+/RADIUS/LDAP/AD, Secure boot | FC-SP | DH-CHAP; optional link encryption |
| Automation | REST/NX-API, Python/Ansible; POAP | Call Home | Integrated |
| Front I/O | 48 x FC ports; USB; serial console | Management ports | Ethernet management for OOB |
| LEDs | System, fan, PSU, link/activity | Interoperability | With MDS 9000 family per matrix |
| Dimensions/weight | 1RU; per datasheet | Environmental | Per datasheet (operating temp/humidity) |
| Power/thermal | Per PSU/datasheet | Certifications | Safety/EMC/RoHS per Cisco |
| Transceivers | Cisco 32G/16G/8G FC optics supported | Accessories | Rail kit, power cords by region (optics ordered separately) |
Get More Information
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Quality Certifications
Customer Reviews
Questions & Answers
-
Why start with DS-C9148T-24PITK9 instead of a fully activated 48-port bundle for a growing virtualization cluster?
-
How do I design for painless growth from 24 to 48 ports?
-
What’s a quick health checklist after each small activation wave?
-
Does 24PITK9 limit NVMe/FC adoption?
-
How should I handle heavy backup windows on a partial-port deployment?
-
Any tips to minimize mis-patches as more servers are added?
-
What about ISSU during expansion months?
-
How do I isolate host HBA issues from switch problems?
-
Can I trunk ISLs from day one even with few ports active?
-
What spare kit is sufficient for 24PITK9 sites?
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It’s a trap… if you don’t check airflow direction! But this unit is correct. Cool air in from ports.
(Sullustan chatter) – Good equipment. Fast ship.
Port-side intake airflow is critical for our hot aisle setup. Glad you had the specific PID in stock.
Received the correct reverse airflow model. Good attention to detail.