DS-C9148T-24PETK9 – 24x32G FC Ports – 24x32G SW Optics – Exhaust SAN Switch

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DS-C9148T-24PETK9 Description

The DS-C9148T-24PETK9 is a Cisco MDS 9148T 32G Fibre Channel switch bundle for server-rack SAN fabrics cooled with port-side exhaust airflow. The 1RU switch carries 48 SFP+ ports at 4, 8, 16 or 32 Gbps, of which 24 are active and matched by 24 bundled 32G shortwave optics, with 1.5 Tbps of aggregate bandwidth. The other 24 ports stay inactive until M9148T-PL8 licenses turn them on in steps of 8 ports.

Quick Specs

Parameter

Specification

Fibre Channel ports

48 SFP+ ports, 24 active at delivery

Port speed

4/8/16/32 Gbps autosensing, 32 Gbps dedicated per port

Included optics

24 x DS-SFP-FC32G-SW 32G FC shortwave SFP+

Port activation

M9148T-PL8 adds 8 ports, to 32, 40 or 48

Aggregate bandwidth

1.5 Tbps full duplex

Buffer credits

Up to 8,300 per 16-port group, 500 default per port

Airflow

Port-side exhaust (back to front, toward the ports)

Default power supply model

2 x DS-CAC-650W-E 650W AC, port-side exhaust

Fan modules

4 fans, port-side exhaust

Typical power consumption

251W with 24 32G SW optics

Form factor

1RU fixed switch

Minimum software

Cisco MDS NX-OS 8.3(1) or later

Product Performance

Aggregate Bandwidth
Dedicated Bandwidth Per Port
Buffer Credits

Key Features

Shortwave Optics Ship With The Active Ports

Each of the 24 active ports has a matching DS-SFP-FC32G-SW in the box. These 850 nm multimode optics run 32G links up to 70 m on OM3 or 100 m on OM4 and OM5, and the same optic reaches 100 m on OM3 at 16G.

Port Growth In 8-Port Steps

All 48 SFP+ cages are installed, and licenses decide how many work. M9148T-PL8 turns on 8 more ports at a time for 32, 40 and then 48, while M9148T-PL8T delivers the same license together with 8 more 32G shortwave optics.

Credits Pooled Across 16-Port Groups

The ports sit in three groups of 16, and each group shares up to 8,300 buffer credits. Every port starts with 500, and a single port can draw up to 8,270 from its group when an inter-switch link needs the depth.

Exhaust Airflow Toward The Ports

Air moves from the back of the chassis and leaves at the port side, 50 CFM at 25°C and up to 100 CFM. Replacement fans and supplies come in separate exhaust and intake versions, so the spares stock has to follow this direction.

Dual Supplies And Hot-Swap Parts

Two 650W AC supplies feed a switch that draws 251W typical with 24 optics and 290W at most. Supplies, the fan module and the SFP+ optics are hot-swappable, and NX-OS upgrades can run as In-Service Software Upgrades.

Switch Mode Or NPV At The Rack

The switch can run as a full fabric switch with its own zoning and name server, or in NPV mode under a SAN core director. FC-NVMe and SCSI traffic share the same 32G links with no hardware change.

Application Scenarios

Rack Edge Below A SAN Director

Below a pair of MDS directors, the switch sits at the top of a server rack in NPV mode and carries 32G host HBA links up to the core fabric.

Standalone SAN For An All-Flash Array

A midsize site with one all-flash array and a cluster of virtualized hosts can run its whole Fibre Channel SAN on this switch, with initiators and targets on the same 24 active ports.

Hot-Aisle Port-Side Rows

In rows where the cabled port side of the rack faces the hot aisle, the switch pulls cool air in at the rear and discharges it across the optics and patch cords.

Product Comparison

Parameter

DS-C9148T-24PETK9

DS-C9148T-24PITK9

DS-C9148T-24EK9

DS-C9148V-24PETK9

Fibre Channel ports

48 SFP+

48 SFP+

48 SFP+

48 SFP+

Port speed

4/8/16/32 Gbps

4/8/16/32 Gbps

4/8/16/32 Gbps

8/16/32/64 Gbps

Active ports at order

24

24

24

24

Included optics

24 x 32G SW

24 x 32G SW

Not included

24 x 32G SW

Aggregate bandwidth

1.5 Tbps full duplex

1.5 Tbps full duplex

1.5 Tbps full duplex

3 Tbps full duplex

Buffer credits

Up to 8,300 per 16-port group

Up to 8,300 per 16-port group

Up to 8,300 per 16-port group

Up to 24,000 per 24-port group

Airflow

Port-side exhaust

Port-side intake

Port-side exhaust

Port-side exhaust

Port upgrade license

M9148T-PL8

M9148T-PL8

M9148T-PL8

M9148V-PL8

DS-C9148T-24PETK9 and DS-C9148T-24PITK9 ship the same 24 active ports and 24 32G SW optics and differ only in airflow, port-side exhaust against port-side intake, so the rack’s cooling direction decides between them. DS-C9148T-24EK9 is the same exhaust switch with 24 active ports and no optics, which suits sites that already hold 32G or 16G FC optics. Where all 48 ports must be live at delivery, DS-C9148T-48PETK9 ships 48 active ports and 48 optics in place of three M9148T-PL8 licenses. DS-C9148V-24PETK9 keeps exhaust airflow and 24 32G SW optics on the 64G MDS 9148V with 3 Tbps of aggregate bandwidth, and its ports reach 64G only once DS-SFP-FC64G-SW optics replace the bundled ones.

Ordering Checklist

  • Exhaust spares: Order replacement supplies as DS-CAC-650W-E= and fan modules as DS-C32S-FAN-E=. DS-CAC-650W-I= and DS-C32S-FAN-I= are the port-side intake parts for the other airflow direction.
  • Port activation: Add one M9148T-PL8 for each 8 ports beyond the first 24, or M9148T-PL8T when those ports also need 32G SW optics. The bundle activates only 24 of the 48 ports.
  • Power cords: Select cords for the two 650W AC supplies from the CAB-9K10A regional series, CAB-9K12A-NA, CAB-250V-10A-BR or the CAB-C15-CBN cabinet jumpers. The supplies take a C15 cord connector.
  • Optional software: Add Enterprise Package M9100ENT1K9= or L-M9100ENT1K9= when the fabric needs IVR, FC-SP, port security or traffic encryption. The package is a separate per-switch license and is not part of the bundle.
  • Accessory kit: DS-9148T-KIT-CSCO ships as standard; change it to DS-9148T-KIT-EM or DS-9148T-KIT-HDS for Dell/EMC or HDS racks.

Optional Add-ons

Model

Description

M9148T-PL8

MDS 9148T 8-port on-demand activation license

M9148T-PL8=

MDS 9148T 8-port activation license, spare

M9148T-PL8-SL=

MDS 9148T 8-port activation Smart License, spare

M9148T-PL8T

8-port activation license plus 8 x 32G SW optics

DS-CAC-650W-E=

650W AC power supply, port-side exhaust, spare

DS-C32S-FAN-E=

MDS 9148T fan module, port-side exhaust, spare

DS-SFP-FC32G-SW

32G Fibre Channel shortwave SFP+, LC, multimode

DS-SFP-FC32G-LW=

32G Fibre Channel longwave SFP+, LC, single-mode, spare

M9100ENT1K9=

MDS 9000 Family Enterprise Package, per switch

DCNM-SAN-M91-K9=

Cisco DCNM for SAN Advanced Edition for MDS 9100

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

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-24PETK9 Bundle scope MDS 9148T switch, 24 active ports, 24 x 32G SW optics, 4 fans, 2 PSUs, port-side exhaust
Rack units 1RU fixed switch Fibre Channel ports 48 SFP+ ports base
Active ports at order 24 Maximum active ports 48 with M9148T-PL8 licenses (32, 40, 48)
Port speed 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
Buffer credits Up to 8,300 per 16-port group; 500 default per port; up to 8,270 for a single port Port channel Up to 16 load-balanced physical links per port channel
Fibre Channel port types E, F and B standard; SD, ST, NP and TE enhanced Classes of service Class 2, Class 3 and Class F
Protocols FC-NVMe; IP over Fibre Channel (RFC 2625); IPv6, IPv4 and ARP over Fibre Channel (RFC 4338) Fabric services Name server, RSCN, login services, Fabric Configuration Server, broadcast, in-order delivery
Advanced functions VSAN, NPV, IVR, port channel with multipath load balancing, flow- and zone-based QoS Intelligent services Auto-zone, Smart Zoning, slow-drain detection and isolation
Security VSAN isolation, hardware zoning by ACLs, FC-SP switch and host authentication, RBAC with RADIUS, TACACS+ or LDAP, SFTP, SSHv2, SNMPv3 with AES, control-plane security, Cisco TrustSec payload encryption, secure boot, anti-counterfeit technology Diagnostics POST, OHMS, internal loopbacks, SPAN, FC traceroute, FC ping, FC debug, Cisco Fabric Analyzer, syslog, port-level statistics, E-port and F-port link diagnostics, Read Diagnostic Parameter
High availability ISSU, hot-swappable dual redundant power supplies, hot-swappable fan module, hot-swappable SFP+ optics, stateful process restart, VRRP for the management IP, FEC and BB state change notification with HBA ports Programming interfaces Scriptable CLI, Cisco DCNM web services API, NX-API RESTful interfaces, onboard Python interpreter, EEM, NX-OS scheduler
Management port mgmt0 10/100/1000BASE-T; mgmt1 1/10G SFP+ listed for a future software release Console port RS-232 serial console port
USB port USB power-on auto-provision port Default power supply model DS-CAC-650W-E 650W AC, port-side exhaust (spare PID DS-CAC-650W-E=)
Included optic DS-SFP-FC32G-SW, 850 nm multimode, dual LC, 8/16/32G 32G SW reach 20 m OM2, 70 m OM3, 100 m OM4/OM5 at 32G; 2 m minimum
16G reach on 32G SW optic 35 m OM2, 100 m OM3, 125 m OM4/OM5 Optic operating temperature 0 to 70°C
Supported FC optics DS-SFP-FC32G-SW, DS-SFP-FC32G-LW=, DS-SFP-FC16G-SW, DS-SFP-FC16G-LW=, DS-SFP-FC8G-SW=, DS-SFP-FC8G-LW= Minimum software Cisco MDS NX-OS 8.3(1) or later; Cisco DCNM 11(0) or later
Power supply options 2 x 650W AC per switch, 80 Plus Platinum, hot-swappable AC input 100 to 240 VAC (10% range), 50 to 60 Hz nominal
Power cord connection C14 plug on the supply into a notched C15 cord connector Output holdup time 20 ms
Typical power consumption 217W idle without optics; 251W with 24 32G SW optics; 297W with 48 32G SW optics Maximum power with 24 SW optics 267W at 110V, 260W at 220V (100% traffic, 25°C)
Power required 290W maximum Heat dissipation 989 BTU/hr
Input current 3.41 A at 85 VAC, 2.63 A at 110 VAC, 1.31 A at 220 VAC Fan modules 4 fans, hot-swappable fan module, port-side exhaust
Airflow Back to front (toward ports), port-side exhaust; 50 CFM at 25°C, 100 CFM maximum Clearance 2.5 in. (6.4 cm) from walls to air vents; 6 in. (15.2 cm) between chassis
Operating temperature 0 to 40°C Storage temperature -40 to 70°C
Operating humidity 10 to 90% noncondensing Nonoperating humidity 10 to 95% noncondensing
Operating altitude -60 to 2000 m Dimensions (H x W x D) 1.72 x 17.3 x 22.3 in., excluding PSU and fan module handles
Weight 8.5 kg Accessory kit DS-9148T-KIT-CSCO shipped as standard
Safety certifications CE Marking, UL 60950, CAN/CSA-C22.2 No. 60950, EN 60950, IEC 60950, TS 001, AS/NZS 3260, IEC60825, EN60825, 21 CFR 1040 EMC certifications FCC Part 15 Class A, ICES-003 Class A, EN 55022 Class A, CISPR 22 Class A, AS/NZS 3548 Class A, VCCI Class A, EN 55024, EN 50082-1, EN 61000-6-1, EN 61000-3-2, EN 61000-3-3

Quality Certifications

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    Bryan Warren
    Posted on 03/03/2026
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    Layer23 shipped ahead of the quoted lead time. Pleasant surprise.

    Philip Phillips
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    Quality felt premium. No corners cut anywhere in the product or packaging.

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    Pre-sales conversations felt like talking to someone who knew the product.

    Galen Erso
    Posted on 25/09/2024
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    I built a flaw into the system… wait, no, this switch is flawless.

    Director Krennic
    Posted on 12/07/2024
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    We stand amidst my achievement! Access to data is instantaneous.

Questions & Answers

  • How many ports are active on DS-C9148T-24PETK9 at order, and how are more enabled?

    DS-C9148T-24PETK9 ships with 24 of its 48 SFP+ ports active, matched by 24 bundled 32G shortwave optics. M9148T-PL8 adds 8 ports per license to reach 32, 40 or 48, and M9148T-PL8T adds the same 8 ports with 8 more 32G shortwave optics.
  • Which Fibre Channel speeds does DS-C9148T-24PETK9 support?

    DS-C9148T-24PETK9 supports 4, 8, 16 and 32 Gbps autosensing, with 32 Gbps of dedicated bandwidth per port. The 24 bundled DS-SFP-FC32G-SW optics are rated 8, 16 and 32 Gbps, and at 32 Gbps they reach 70 m on OM3 or 100 m on OM4 and OM5.
  • What is the maximum power draw of DS-C9148T-24PETK9 with its 24 optics?

    DS-C9148T-24PETK9 draws up to 267W at 110V and 260W at 220V with 24 32G shortwave optics at 100 percent traffic and 25C. Typical draw at 50 percent traffic is 257W and 251W at the same two voltages.
  • Can DS-C9148T-24PETK9 use its mgmt1 SFP+ port today?

    The mgmt0 10/100/1000BASE-T port is the management port in use. The mgmt1 1/10G SFP+ port is listed for a future software release, so plan management cabling on mgmt0.
  • What input current does DS-C9148T-24PETK9 draw from its AC supplies?

    DS-C9148T-24PETK9 draws 3.41 A at 85 VAC, 2.63 A at 110 VAC and 1.31 A at 220 VAC. Size the PDU and branch circuit for the higher current when the rack runs on 110 VAC feeds.
  • What clearance does DS-C9148T-24PETK9 need around its vents?

    DS-C9148T-24PETK9 needs 2.5 in. (6.4 cm) from walls to the air vents and 6 in. (15.2 cm) between chassis. The switch weighs 8.5 kg and dissipates 989 BTU/hr, so leave the vents unblocked and size rack cooling for that heat load.

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