FM64Y - Dell EMC PowerSwitch Z9100-ON 32-Port 100GbE Switch

Dell EMC Z9100-ON high-density 1U data center switch offering 32x QSFP28 100GbE ports plus 2x SFP+ ports with 6.4Tbps switching capacity.

The Dell part number FM64Y identifies the Dell EMC PowerSwitch Z9100-ON, a compact 1U fixed switch purpose-built for high-performance data center and computing environments. It offers flexible port configurations of up to 32 ports of 100GbE (QSFP28), 64 ports of 50GbE, 32 ports of 40GbE, 128 ports of 25GbE, or 128+2 ports of 10GbE, along with two dedicated SFP+ ports. Leveraging a non-blocking, cut-through switching architecture, the Z9100-ON delivers line-rate Layer 2 and Layer 3 forwarding to maximize network performance, making it suitable for top-of-rack deployment in dense, high-speed fabric environments. It supports ONIE for alternate operating system installs (including SONiC and Cumulus Linux) and ships with Dell OS9 or OS10 by default.

• Manufacturer: Dell EMC
• Product Family: Dell EMC Networking / PowerSwitch Z-Series
• Product Series: Z9100-ON
• Model / Dell Part Number: FM64Y (0FM64Y)
• Product Type: Fixed 1U data center Ethernet switch, Layer 2/Layer 3 managed
• Ports: 32x QSFP28 100GbE ports + 2x SFP+ 10GbE/1GbE ports
• Port Flexibility: Configurable as 32x100GbE, 64x50GbE, 32x40GbE, 128x25GbE, or 128+2x10GbE
• Switching I/O Bandwidth: 6.4 Tbps (full duplex)
• Forwarding Capacity: Up to 3300 Mpps
• Latency: Sub 500ns
• MAC Address Table: 136,000 entries
• CPU Memory: 8 GB
• Packet Buffer Memory: 16 MB
• IPv4/IPv6 Routes: 136K IPv4 Unicast / 68K IPv6 Unicast routes
• LAG Support: 128 groups, up to 16 members per group
• VLANs: 4K per port (Layer 2); 1K standalone / 4K with VLT (Layer 3)
• Operating System: Dell OS9 (default) or Dell EMC OS10 Enterprise; supports ONIE for SONiC/Cumulus Linux
• Management Ports: 1x RJ45 console (RS232), 1x 10/100/1000BaseT management, 1x USB 2.0 Type-A, 1x micro-USB Type-B
• Power Supply: 2x redundant, hot-swappable AC PSUs (100–240 VAC, 50/60 Hz)
• Max Power Consumption: 605 Watts
• Typical Power Consumption: 195 Watts
• PoE: Not applicable
• Cooling / Airflow: Standard (I/O to PSU) or reverse (PSU to I/O) airflow, redundant hot-swappable fans
• Operating Temperature: 0°C to 45°C (32°F to 113°F)
• Storage Temperature: -40°C to 70°C (-40°F to 158°F)
• Dimensions: 1.72"H x 17.1"W x 18"D (1U)
• Weight: 22 lbs (9.98 kg)
• Certifications: UL/CSA 60950-1, EN 60950-1, IEC 60950-1, FDA 21 CFR 1040.10/1040.11, AS/NZS CISPR 22 Class A
• Security: SNMPv3, ACLs (L2/L3), 802.1X port authentication, VRF-lite traffic isolation
• Warranty: Not explicitly published by Dell for new units; typically covered under Dell ProSupport; third-party resellers offer 90 days to 3 years

• 32x QSFP28 100GbE ports plus 2x dedicated SFP+ ports in a compact 1U form factor
• Non-blocking, cut-through switching architecture for line-rate L2/L3 forwarding
• Flexible port speed configuration from 10GbE up to 100GbE using breakout cabling
• 6.4 Tbps of full-duplex switching I/O bandwidth for high-throughput environments
• Sub-500ns latency suited to latency-sensitive data center workloads
• Redundant, hot-swappable power supplies and fan modules for high availability
• Supports ONIE for zero-touch installation of alternate network operating systems (SONiC, Cumulus Linux)
• Multi-chassis link aggregation (VLT) for simplified, resilient network topologies
• VRF-lite for shared infrastructure with Layer 3 traffic isolation across tenants
• Priority-based flow control (PFC), DCBX, and ETS for converged data center bridging
• Jumbo frame support for large data transfers
• Choice of standard or reverse airflow to match hot-aisle/cold-aisle data center designs

The FM64Y (Dell Z9100-ON) is designed for high-performance, high-density networking in modern data centers.

• Top-of-rack (ToR) switching in high-performance computing and data center environments
• Active Fabric implementation for server aggregation at multi-rate 10/25/40/50/100GbE speeds
• Spine or leaf-layer switching in software-defined data center fabrics
• High-throughput storage networking requiring low-latency, non-blocking connectivity
• Migration path for data centers transitioning from 10/40GbE to 25/100GbE infrastructure
• Consolidation of multiple lower-speed switches into a single dense 100GbE platform
• Deployment in research/scientific computing networks requiring very high bandwidth (e.g., large-scale conference/event networking)

• High port density in a compact 1U footprint
• Line-rate L2/L3 performance minimizes bottlenecks
• Flexible port speeds ease migration to 100GbE
• Redundant PSUs and fans improve uptime
• ONIE support enables multi-vendor OS choice
• Low latency benefits demanding workloads

• Form Factor: 1U rack-mountable fixed switch
• Dimensions: 1.72"H x 17.1"W x 18"D
• Weight: 22 lbs (9.98 kg)
• Airflow Options: Standard (I/O to PSU) or reverse (PSU to I/O)
• Rack Mounting: ReadyRails tool-less rack mounting system

Per available documentation, this product is validated for:

• Dell-qualified QSFP28 100GbE transceivers and DAC/AOC cables
• Dell-qualified QSFP+ 40GbE transceivers and cables
• Dell-qualified SFP28 25GbE transceivers
• Dell-qualified SFP+ 10GbE transceivers and cables
• Dell EMC Networking OS9 and OS10 software
• SONiC network operating system (via ONIE install)
• Cumulus Linux network operating system (via ONIE install)
• Z9100 Cable Breakout Kits (MTP to LC, various configurations)
• Dell ReadyRails rack mounting kit (100-566-027)

Note: Non-Dell-qualified transceivers may cause the interface to enter an error-disabled state; contact Dell for a current supported optics list.

• Dell EMC PowerSwitch Z9100-ON switch unit
• 2x hot-swappable power supply units
• ReadyRails rack mounting rails
• 1x console cable
• Documentation/getting started guide (transceivers and optics sold separately)

Q: What product does the Dell part number FM64Y correspond to?

A: FM64Y is the Dell part number for the Dell EMC PowerSwitch Z9100-ON, a 32-port 100GbE QSFP28 plus 2-port SFP+ data center switch, as confirmed by Dell resellers and Dell's own configuration documentation for the Z9100-ON platform.

Q: How many ports does the Z9100-ON (FM64Y) support?

A: The switch has 128 physical lanes that can be configured as 32 ports of 100GbE, 64 ports of 50GbE, 32 ports of 40GbE, 128 ports of 25GbE, or 128 ports of 10GbE, plus two additional SFP+ ports.

Q: What is the switching capacity of the FM64Y switch?

A: According to Dell's official spec sheet, the switch delivers up to 6.4 Tbps of full-duplex switching I/O bandwidth.

Q: Does the FM64Y support Power over Ethernet (PoE)?

A: No, PoE is not applicable to this switch, as confirmed by reseller specification listings referencing the official Dell data sheet.

Q: What operating systems can run on the Z9100-ON (FM64Y)?

A: It ships with Dell EMC Networking OS9 by default and can also run OS10 Enterprise; it supports ONIE, allowing installation of alternate operating systems such as SONiC and Cumulus Linux.

Q: What is the power consumption of the FM64Y switch?

A: Per Dell's official documentation, maximum power consumption is 605 Watts, with typical consumption around 195 Watts.

Q: Does Dell publish an MTBF figure for the Z9100-ON?

A: No. According to a Dell Community support response, Dell no longer provides MTBF data for its networking devices, including the Z9100-ON series.

Q: What airflow configurations are available for this switch?

A: The switch is available with either standard (I/O to PSU) or reverse (PSU to I/O) airflow, allowing deployment in both hot-aisle and cold-aisle data center layouts.