DS-C9124V-8IK9 – 8x64G FC Ports – 24-Port 1RU Chassis – Intake SAN Switch

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DS-C9124V-8IK9 Description

The DS-C9124V-8IK9 is a Cisco MDS 9124V Series 64G Fibre Channel switch for SAN access in racks that draw cold air in at the port side. The 1RU switch has 24 SFP+ ports with 8 active, autosensing speeds of 8, 16, 32 and 64 Gbps, 1.5 Tbps of aggregate bandwidth and port-side intake airflow. The switch includes no optics, and each added block of 8 ports needs an M9124V-PL8 upgrade license, up to 24 active ports.

Quick Specs

Parameter

Specification

Product ID

DS-C9124V-8IK9

Product compatibility

Cisco MDS 9000 Family

Order configuration

64G 1RU FC switch with 8 active ports

Fibre Channel ports

24 Fibre Channel SFP+ ports

Active ports at order

8 active ports

Fibre Channel speed support

8, 16, 32, and 64 Gbps autosensing

Aggregate bandwidth

1.5 Tbps full duplex

Minimum NX-OS release

Cisco MDS 9000 NX-OS Release 9.3(1) or later

Fan modules

4 fan modules

Power supplies

2 power supplies

Airflow

Port-side intake

Power supply options

500W AC intake or 1200W AC/HVAC/HVDC bidirectional

Port activation license

M9124V-PL8 adds 8 active ports

Product Performance

Per-Port Fibre Channel Bandwidth
Full-Duplex Aggregate Bandwidth
Licensed Port Growth Ceiling

Key Features

Port-Side Intake Airflow

Air enters through the port side, matching racks with the cold aisle at the cable face. The intake fan trays and power supplies must follow the same direction.

64 Gbps Per Port With Autosensing

Every port has 64 Gbps of dedicated bandwidth and negotiates down to 32, 16 or 8 Gbps, so one chassis can serve mixed generations of hosts and arrays.

Eight Active Ports In A 24-Port Chassis

Eight ports are active from the start. Each M9124V-PL8 license activates eight more, so a fabric can grow to 24 ports without a new switch.

24,000 Buffer Credits In One Port Group

The single 24-port group holds up to 24,000 buffer credits, with 1000 per port by default and up to 16,000 on a single port for longer links.

500W Or 1200W Power Supplies

The switch takes two power supplies, either 500W AC intake or the 1200W DS-CAC-1200W, which accepts 90 to 305 VAC or 192 to 400 VDC for sites with high-voltage feeds.

Port Channels Up To 24 Links

A single port channel can bundle up to 24 physical links, which lets inter-switch connections scale with load balancing across the whole port group.

Application Scenarios

Cold-Aisle Storage Cabinets

In a cabinet where the cold aisle faces the cable side, the switch pulls air in through the port side and keeps the SFP+ optics in the coolest air.

Server Rack SAN Access

Servers with 8, 16 or 32 Gbps HBAs connect to the first 8 active ports, and the autosensing ports let older and newer hosts share the same chassis.

Staged SAN Growth

A department building out its SAN in phases can start with 8 active ports and add M9124V-PL8 licenses as arrays and hosts join, up to all 24 ports.

Product Comparison

Parameter

DS-C9124V-8IK9

DS-C9124V-8PITK9

DS-C9124V-24PITK9

DS-C9124V-24PEVK9

Fibre Channel ports

24 SFP+

24 SFP+

24 SFP+

24 SFP+

Autosensing speeds

8, 16, 32 and 64 Gbps

8, 16, 32 and 64 Gbps

8, 16, 32 and 64 Gbps

8, 16, 32 and 64 Gbps

Aggregate bandwidth

1.5 Tbps full duplex

1.5 Tbps full duplex

1.5 Tbps full duplex

1.5 Tbps full duplex

Buffer credits per port group

Up to 24,000

Up to 24,000

Up to 24,000

Up to 24,000

Airflow

Port-side intake

Port-side intake

Port-side intake

Port-side exhaust

Active ports

8

8

24

24

Included optics

No optics

8 x 32G SW

24 x 32G SW

24 x 64G SW

Port activation license

M9124V-PL8 adds 8 ports

M9124V-PL8 adds 8 ports

Not required

Not required

DS-C9124V-8IK9 is the 8-active-port 64G base switch with port-side intake airflow and no optics, and its only difference from DS-C9124V-8EK9 is the exhaust direction, so racks with port-side exhaust move to DS-C9124V-8EK9. DS-C9124V-8PITK9 keeps intake airflow and 8 active ports and adds 8 x 32G shortwave optics to the same order. DS-C9124V-24PITK9 is the intake choice when all 24 ports and 24 x 32G shortwave optics are needed from day one, while a site that grows from 8 ports adds 8-port M9124V-PL8 licenses up to 24. DS-C9124V-24PEVK9 bundles 24 x 64G shortwave optics but on exhaust airflow, so intake racks that need 64G optics on all 24 ports order DS-C9124V-24PIVK9.

Ordering Checklist

  • Airflow-matched power and fans: DS-C9124V-8IK9 is port-side intake; order spares DS-CAC-500W-I= and fan tray DS-C32S-FAN-I=, or DS-CAC-1200W for bidirectional airflow. An exhaust power supply or fan tray in the intake chassis reverses cooling.
  • Power supply type: Choose 500W AC DS-CAC-500W-I, or the 1200W AC/HVAC/HVDC DS-CAC-1200W where the site feed is high-voltage AC or DC. The supply must match the site feed, and only the 1200W unit covers HVAC and HVDC.
  • Port activation: 8 ports are active at order; each M9124V-PL8 adds 8 ports, up to 24. Ports beyond the first 8 stay unusable until M9124V-PL8 licenses are on the order.
  • FC optics: Add DS-SFP-FC64G-SW=, DS-SFP-FC32G-SW=, DS-SFP-FC32G-LW= or another listed FC SFP+, since no optics come with this PID. The switch arrives with empty ports, so each link needs optics as separate lines.
  • Software subscription: Optionally add Premier (M91VXK9-P-1Y, -3Y, -5Y, -7Y) or Advantage (M91VXK9-A-1Y, -3Y, -5Y) as a separate order line; it is not part of this hardware PID.

Optional Add-ons

Model

Description

DS-CAC-500W-I=

500W AC PSU, port-side intake spare for MDS 9124V

DS-C32S-FAN-I=

Port-side intake fan tray spare for MDS 9124V

Specifications

Parameter Specification Parameter Specification
Product ID DS-C9124V-8IK9 Product compatibility Cisco MDS 9000 Family
Product type 64G Fibre Channel SAN switch Rack units 1RU fixed-switch form factor
Fibre Channel ports 24 SFP+ ports base Active ports at order 8 active ports
Fibre Channel speed support 8, 16, 32, and 64 Gbps autosensing Dedicated bandwidth per port 64 Gbps
Switching capacity 1.5 Tbps end-to-end full duplex Port group 1 port group of 24 ports
Buffer credits Up to 24,000 for a group of 24 ports Default buffer credits per port 1000 buffer credits per port
Maximum buffer credits for a single port 16,000 buffer credits in the port group Port channel support Up to 24 load-balanced physical links in one port channel
Minimum NX-OS release Cisco MDS 9000 NX-OS Release 9.3(1) or later Fibre Channel port types E and F standard port types; SD, ST, NP, and TE enhanced port types
NVMe/FC support NVMe/FC and NVMe/FC-2 standards listed Management port mgmt0 10/100/1000BASE-T port
Console port RS-232 serial console port USB port USB power-on auto-provision port
Programmability NX-API HTTP/HTTPS interfaces and onboard Python interpreter Diagnostics POST, OHMS, SPAN, Fibre Channel traceroute, Fibre Channel ping, port-level statistics, and link diagnostics
High availability components Hot-swappable dual redundant power supplies, fan tray, and SFP+ optics Fan modules 4 fan modules in the ordering description
Power supply options 2 power supplies in the ordering description Default power supply Two supplies in the order configuration; the order description does not state the model (DS-CAC-500W-I 500W AC intake or DS-CAC-1200W 1200W AC/HVAC/HVDC)
AC input voltage 100 to 240 VAC, 10 percent range AC input frequency 50 to 60 Hz nominal
Typical power consumption without optics 94W for 24-port switch in idle status with no optics modules Typical power consumption with 8 x 64G SW optics 113W under 50 percent line rate
Typical power consumption with 24 x 64G SW optics 146W under 50 percent line rate 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 17.299 x 18 in. (4.37 x 43.94 x 45.72 cm), excluding PSU and fan-tray handles Weight 8.5 kg (18.73 lb)
Operating temperature 32 to 104F (0 to 40C) with port-side exhaust and intake airflow variants Operating humidity 10 to 90 percent noncondensing
Operating altitude -197 to 6500 ft (-60 to 2000 m) Advanced functions VSAN, IVR, NPV, port channel with multipath load balancing, and flow- and zone-based QoS
Fabric services Name server, RSCN, login services, FCS, broadcast, and in-order delivery Port activation license M9124V-PL8 8-port upgrade license
Supported FC optics 64G SW, 64G LW, 32G SW, 32G LW, 32G ELW, 16G SW, 16G LW, and 16G ELW optics

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    Denise Coleman
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    Hesitated for weeks before ordering. Wish I’d done it sooner.

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    Posted on 28/01/2026
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    5.0

    Double-boxed with foam inserts. They clearly care about safe delivery.

    Daniel Powell
    Posted on 17/01/2026
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    4.0

    We’ve built a multi-year purchasing history with Layer23. Wish the lead time was a bit shorter, but product quality made up for it.

Questions & Answers

  • Which EPLD version does DS-C9124V-8IK9 need for 64G operation?

    Update the EPLD on DS-C9124V-8IK9 to at least version 9.4(5), per the MDS EPLD release notes. Cisco lists the MDS 9124V among the 64 Gbps platforms that need this update, and the notes list the 9124V under DS-C9124V-K9-SUP.
  • What airflow rate does DS-C9124V-8IK9 need?

    DS-C9124V-8IK9 moves 50 CFM through the system fan assembly at 77F (25C), with a 100 CFM maximum. Operating temperature is 0 to 40C with port-side intake airflow, so keep the cold aisle at the cable face.
  • What operating altitude is DS-C9124V-8IK9 rated for?

    DS-C9124V-8IK9 is rated for altitudes from -60 to 2000 m (-197 to 6500 ft) and 10 to 90 percent non-condensing humidity. Sites above 6500 ft fall outside the rating for this chassis.
  • How much power does DS-C9124V-8IK9 draw when idle and with optics?

    DS-C9124V-8IK9 draws a typical 94W with 24 ports idle and no optics, and 146W with 24 x 64G SW optics at 50 percent line rate. Eight 64G SW optics bring the draw to 113W.

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