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Rectangular 15mm U.2 enterprise SSD with silver metal casing and label showing Micron 6550 ION 61.44TB

Micron

Micron MTFDLAL61T4THL-1BK1DFCYYR 61.44TB enterprise SSD

SKU CH-NJQZ-Y1FMX MPN MTFDLAL61T4THL-1BK1DFCYYR

A 61.44 TB U.2 NVMe drive delivering 14,000 MB/s sequential reads and 25 W active power for dense enterprise storage

  • Massive 61.44TB capacity fits huge datasets in one U.2 drive
  • PCIe Gen5 x4 NVMe delivers 14,000 MB/s sequential read speed
  • 2,000,000 random read IOPS accelerates latency-sensitive enterprise workloads
  • TCG Opal SED encryption protects data at rest without performance loss
  • 5 million hour MTTF and sub-10^17 UBER ensure long-term reliability

Capacity and role

The Micron 6550 ION is a 61.44TB enterprise SSD built for read-intensive server workloads. Its U.2 15mm form factor fits dense storage arrays that need high capacity per drive slot. The drive targets hyperscale and cloud deployments where sequential throughput and low latency matter more than mixed-write endurance. Buyers who need higher random-write endurance or a smaller physical footprint should look elsewhere.

PCIe Gen5 interface limits

The drive connects through a PCIe Gen5 x4 link using NVMe 2.0b, so maximum throughput depends on the host platform supporting that generation and lane width. Sequential reads reach 14,000 MB/s and writes 7,000 MB/s at queue depth 128, while random reads hit 2,000,000 IOPS at QD512. Active power peaks at 25 W, and the operating temperature range is 0°C to 70°C. Systems limited to PCIe Gen4 or fewer lanes will not achieve the rated speeds.

Endurance profile decides fit

Endurance is expressed in drive writes per day and varies sharply with the write pattern: 1.00 DWPD for pure 128KB sequential writes, but only 0.25 DWPD for 100% 4KB random writes and 0.30 DWPD under the JESD219A mixed workload. If the application sustains heavy small-block random writes, this drive will wear out faster than alternatives rated for higher random-write DWPD. Choose it when the workload matches the sequential or mixed profiles listed.

Highlights

  • Massive 61.44TB capacity fits huge datasets in one U.2 drive
  • PCIe Gen5 x4 NVMe delivers 14,000 MB/s sequential read speed
  • 2,000,000 random read IOPS accelerates latency-sensitive enterprise workloads
  • TCG Opal SED encryption protects data at rest without performance loss
  • 5 million hour MTTF and sub-10^17 UBER ensure long-term reliability

Specifications

No published specifications for this item yet.

Questions about this item

How do I decide between the 61.44TB capacity and other sizes in the 6550 ION line?

Choose the 61.44TB model when you need maximum density per U.2 slot; it delivers 14,000 MB/s sequential reads and 2,000,000 random read IOPS at that capacity.

What does the 14,000 MB/s sequential read figure mean once the drive is installed in a server?

At queue depth 128 the drive can sustain 14,000 MB/s reads, so large-block workloads such as sequential analytics or content streaming will approach that throughput if the host and cooling support it.

What does the PCIe Gen5 1x4 NVMe 2.0 interface cap in practice?

The x4 Gen5 link tops out near 14,000 MB/s for sequential reads and 7,000 MB/s for sequential writes, so the drive’s headline speeds are the practical ceiling of the interface.

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