DS-C9148T-24PITK9 – 24x32G FC Ports – 24x32G SW Optics – Intake SAN Switch

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DS-C9148T-24PITK9 Description

The DS-C9148T-24PITK9 is a Cisco MDS 9148T 32G Fibre Channel switch for server-rack and storage-edge SAN fabrics that cool from the port side. The 1RU switch has 48 SFP+ ports at 4, 8, 16 or 32 Gbps, with 24 ports active, 24 Cisco 32G shortwave optics and 1.5 Tbps of aggregate bandwidth. Ports beyond the first 24 need M9148T-PL8 licenses, which activate 8 ports at a time up to 48.

Quick Specs

Parameter

Specification

Product ID

DS-C9148T-24PITK9

Product type

32G Fibre Channel SAN switch bundle

Form factor

1RU fixed-switch form factor

Chassis Fibre Channel ports

48 SFP+ ports base

Active ports at order

24 active FC ports

Included optics

24 x 32G FC shortwave optics

Airflow

Port-side intake

Included hardware

4 fans and 2 PSUs

Port activation path

M9148T-PL8 8-port activation license

Minimum NX-OS release

Cisco MDS NX-OS 8.3(1) or later

Product Performance

Bundled Shortwave Fibre Channel Media
MDS 9148T Full-Duplex Fabric Bandwidth
Documented Port Activation Growth

Key Features

Shortwave Optics Included

The 24 Cisco 32G shortwave optics ship with the switch, so the first 24 links run over multimode fiber without sourcing optics separately.

24 Active Ports On A 48-Port Chassis

All 48 SFP+ slots are physically present and 24 are active. Each M9148T-PL8 license adds 8 ports, taking the switch to 32, 40 and then 48 active ports with no hardware change.

32 Gbps On Every Port

Ports autosense 4, 8, 16 and 32 Gbps, and each carries 32 Gbps of dedicated bandwidth. The chassis totals 1.5 Tbps of full-duplex aggregate bandwidth.

Three Port Groups Of 16

The 48 ports sit in three groups of 16, each with up to 8,300 buffer credits. The default is 500 credits per port and a single port can take up to 8,270, which is the headroom longer inter-switch links draw on.

Port-Side Intake Airflow

Air enters at the port side. The four fan modules and the power supplies have to be intake versions as well, because intake and exhaust parts are separate and a mismatch reverses the airflow.

Two 650W Power Supplies

Two 80 Plus Platinum 650W AC supplies accept 100 to 240 VAC. With 24 32G shortwave optics installed the switch draws a typical 251W.

Application Scenarios

Server Row SAN Edge

In a server row, hosts and storage arrays attach to the 24 active ports over multimode fiber with the included 32G shortwave optics, and each port keeps 32 Gbps of dedicated bandwidth.

Phased Fabric Build-Out

A storage team that adds hosts and arrays over several quarters starts with 24 active ports and then turns on 8 more at a time with M9148T-PL8 licenses until all 48 ports are in use.

Cold-Aisle Intake Rack

Where the port side of the rack faces the cold aisle, the port-side intake airflow of this switch draws cooling air in across the optics and cables.

Product Comparison

Parameter

DS-C9148T-24PITK9

DS-C9148T-24PETK9

DS-C9148T-24IK9

DS-C9148T-48PITK9

Fibre Channel ports

48 SFP+ ports

48 SFP+ ports

48 SFP+ ports

48 SFP+ ports

Active ports

24

24

24

48

Fibre Channel speed

4/8/16/32 Gbps autosensing

4/8/16/32 Gbps autosensing

4/8/16/32 Gbps autosensing

4/8/16/32 Gbps autosensing

Aggregate bandwidth

1.5 Tbps full duplex

1.5 Tbps full duplex

1.5 Tbps full duplex

1.5 Tbps full duplex

Buffer credits

Up to 8,300 per port group

Up to 8,300 per port group

Up to 8,300 per port group

Up to 8,300 per port group

Airflow

Port-side intake

Port-side exhaust

Port-side intake

Port-side intake

Included optics

24 x 32G SW

24 x 32G SW

Not included

48 x 32G SW

Port upgrade license

M9148T-PL8 8-port activation

M9148T-PL8 8-port activation

M9148T-PL8 8-port activation

Not applicable

DS-C9148T-24PITK9 and DS-C9148T-24PETK9 carry the same 24 active ports and 24 included 32G SW optics and differ only in airflow: DS-C9148T-24PITK9 is port-side intake and DS-C9148T-24PETK9 is port-side exhaust, so the choice follows the airflow direction of the rack. A SAN map that needs all 48 ports active at delivery should order DS-C9148T-48PITK9, which ships 48 active ports and 48 optics, instead of growing this SKU with M9148T-PL8 licenses in steps of 8 ports. DS-C9148T-24IK9 is the same intake switch with 24 active ports and no factory optic bundle, which suits sites that buy their optics separately.

Ordering Checklist

  • Airflow of spares: Order replacement PSU DS-CAC-650W-I= and fan module DS-C32S-FAN-I= to match the port-side intake airflow. Intake and exhaust PSU and fan PIDs are separate parts, and a mismatched part reverses the airflow of the chassis.
  • Port growth: Add M9148T-PL8 for 32, 40 or 48 ports; M9148T-PL8T adds 8 x 32G SW optics with the 8-port license. The bundle ships with 24 active ports, and every port beyond 24 needs its own license line.
  • Power cords: Select a region cord from the CAB-9K10A-* series, CAB-9K12A-NA or CAB-250V-10A-BR, or a CAB-C15-CBN cabinet jumper. The two 650W AC supplies need cords that fit the site’s outlet or cabinet PDU.
  • Optional software: Add Enterprise Package M9100ENT1K9= or SAN Insights Package L-D-M91S-AXK9= if the fabric needs them. These packages are listed as separate Table 2 licenses and are not part of the bundle PID.

Optional Add-ons

Model

Description

M9148T-PL8

Cisco MDS 9148T 8-port On-Demand Activation license

M9148T-PL8=

Cisco MDS 9148T 8-port On-Demand Activation spare license

M9148T-PL8-SL=

Cisco MDS 9148T 8-port activation Smart License spare

M9148T-PL8T

Cisco MDS 9148T 8-port activation license with 8 x 32G SW optics

DS-CAC-650W-I=

AC PSU port-side intake spare for MDS 9148T

DS-C32S-FAN-I=

MDS 9148T fan module port-side intake spare

DS-SFP-FC32G-SW

Cisco 32 Gbps Fibre Channel shortwave SFP+ LC optic

DS-SFP-FC32G-LW=

Cisco 32 Gbps Fibre Channel longwave SFP+ LC spare optic

DS-9148T-KIT-CSCO

MDS 9148T accessory kit for Cisco

DS-C9148T-24PITK9 Front View

DS-9148T-front

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

DS-C9148T-24PITK9 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

DS-9148T-rear

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

Specifications

Parameter Specification Parameter Specification
Product ID DS-C9148T-24PITK9 Product compatibility Cisco MDS 9000 Family
Product type 32G Fibre Channel SAN switch bundle Order configuration 24 active FC ports, 24 x 32G SW optics, 4 fans, 2 PSUs, port-side intake airflow
Rack units 1RU fixed-switch form factor Fibre Channel ports 48 SFP+ ports base
Active ports at order 24 active FC ports Port activation license M9148T-PL8 8-port upgrade license
Maximum active ports 48 active FC ports Fibre Channel speed support 4, 8, 16, and 32 Gbps autosensing
Dedicated bandwidth per port 32 Gbps Switching capacity 1.5 Tbps end-to-end full duplex
Port groups 3 port groups of 16 ports each Buffer credits Up to 8300 for a group of 16 ports, 500 default per port, 8270 maximum for a single port in the group
Port channel support Up to 16 load-balanced physical links in one port channel Fibre Channel port types E, F, B, SD, ST, NP, and TE
Included optic type 32G Fibre Channel shortwave SFP+ optics 32G SW optic product ID DS-SFP-FC32G-SW
32G SW connector Dual LC connector 32G SW fiber type 850 nm MMF
32G SW reach 20 m on OM2, 70 m on OM3, 100 m on OM4/OM5 at 28.05 GBd FC-NVMe support FC-NVMe listed in the protocol support
Advanced functions VSAN, NPV, IVR, port channel with multipath load balancing, and flow- and zone-based QoS Security functions VSAN isolation, hardware zoning ACLs, FC-SP, RBAC, SFTP, SSHv2, SNMPv3, control-plane security, TrustSec payload encryption, secure boot, and anti-counterfeit technology
Diagnostics POST, OHMS, internal loopbacks, SPAN, Fibre Channel traceroute, Fibre Channel ping, Fibre Channel debug, Cisco Fabric Analyzer, syslog, port-level statistics, link diagnostics, and read diagnostic parameter High availability components Hot-swappable dual redundant power supplies, hot-swappable fan module, and hot-swappable SFP+ optics
Management port mgmt0 10/100/1000BASE-T and mgmt1 1/10G SFP+ port Console port RS-232 serial console port
USB port USB power-on auto-provision port Programmability NX-API RESTful interfaces, onboard Python interpreter, Cisco DCNM web services API, EEM, and NX-OS scheduler
Minimum NX-OS release Cisco MDS NX-OS 8.3(1) or later Minimum Cisco DCNM release Cisco DCNM 11(0) or later
Default power supply DS-CAC-650W-I 650W AC port-side intake power supply; two supplies in the order configuration AC input voltage 100 to 240 VAC, 10 percent range
AC input frequency 50 to 60 Hz nominal Typical power with 24 optics 251W for 48-port switch with 24 32G SW optics under typical conditions
Typical power with 48 optics 297W for 48-port switch with 48 32G SW optics under typical conditions Airflow Front to back inward from ports using port-side intake fans
Airflow rate with system fan assembly 50 CFM through system fan assembly at 77F (25C) Airflow rate 100 CFM maximum
Dimensions 1.72 x 17.3 x 22.3 in. (4.37 x 43.94 x 56.64 cm), excluding PSU and fan module handles Weight 8.5 kg (18.73 lb)
Operating temperature 32 to 104F (0 to 40C) with exhaust and intake airflow variants Operating humidity 10 to 90 percent noncondensing
Operating altitude -197 to 6500 ft (-60 to 2000 m) Included accessory kit Cisco-specific MDS 9148T accessory kit shipped as standard
Supported FC optics listed by Cisco 32G SW, 32G LW, 16G SW, 16G LW, 8G SW, and 8G LW optics

Quality Certifications

Customer Reviews

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5.0
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    Amy Johansson
    Posted on 29/03/2026
    Verified Buyer
    5.0

    Been ordering from Layer23 for multiple projects now. Reliable partner.

    Richard Johansson
    Posted on 26/12/2025
    Verified Buyer
    5.0

    Reviews don’t lie. Layer23 is everything people say it is.

    Elena Cooper
    Posted on 14/12/2025
    Verified Buyer
    5.0

    Reliable shipping every time. We can plan around their lead times confidently.

    Admiral Ackbar
    Posted on 25/07/2024
    Verified Buyer
    5.0

    It’s a trap… if you don’t check airflow direction! But this unit is correct. Cool air in from ports.

    Nien Nunb
    Posted on 12/05/2024
    Verified Buyer
    5.0

    (Sullustan chatter) – Good equipment. Fast ship.

Questions & Answers

  • How many ports are active on DS-C9148T-24PITK9 at order, and how are more enabled?

    DS-C9148T-24PITK9 ships with 24 of its 48 SFP+ ports active, and 24 Cisco 32G shortwave optics are included. Each M9148T-PL8 license adds 8 ports, taking the switch to 32, 40 and then 48 active ports with no hardware change.
  • Which Fibre Channel speeds does DS-C9148T-24PITK9 support?

    DS-C9148T-24PITK9 supports 4, 8, 16 and 32 Gbps autosensing, and each port carries 32 Gbps of dedicated bandwidth. The chassis totals 1.5 Tbps of full-duplex aggregate bandwidth, and 24 Cisco 32G shortwave optics ship with the switch.
  • Which management ports does DS-C9148T-24PITK9 have?

    DS-C9148T-24PITK9 has an mgmt0 10/100/1000BASE-T port and an mgmt1 1/10G SFP+ port. It also has an RS-232 serial console port and a USB power-on auto-provision port. Cable the mgmt0 port to the out-of-band management network for remote access.
  • How many links can one port channel on DS-C9148T-24PITK9 hold?

    One port channel on DS-C9148T-24PITK9 holds up to 16 load-balanced physical links. The standard Fibre Channel port types are E, F and B, and the enhanced port types are SD, ST, NP and TE. A port channel bundles links between two switches into one logical link, so traffic keeps flowing if one member link drops.
  • How far do the DS-SFP-FC32G-SW optics in DS-C9148T-24PITK9 reach on OM2?

    The DS-SFP-FC32G-SW optics in DS-C9148T-24PITK9 reach 20 m on OM2 fiber at 28.05 GBd. They are 850 nm multimode optics with a dual LC connector, so OM2 patch cords with LC ends are required for the shortest runs inside the row.
  • How much does DS-C9148T-24PITK9 weigh and how deep is it?

    DS-C9148T-24PITK9 weighs 8.5 kg (18.73 lb) and measures 1.72 x 17.3 x 22.3 in. (4.37 x 43.94 x 56.64 cm), excluding power supply and fan module handles.

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  • DS-C9148T-24PITK9 Datasheet