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Rectangular silver E1.L 9.5mm enterprise SSD with label showing 15.36TB capacity

Solidigm

Solidigm D7-P5520 15.36TB E1.L 9.5mm PCIe 4.0 x4 enterprise SSD SSDPFWKX153T1OS

SKU CH-SW2Y-JDDVT MPN SSDPFWKX153T1OS

15.36 TB enterprise SSD in E1.L 9.5 mm form factor with PCIe 4.0 x4, 144L TLC 3D NAND, up to 7100 MB/s read, 3700 MB/s write, 1 000 000 random read IOPS, 200 000 random write IOPS.

  • Total capacity15.36 TB
  • Sequential read speedUp to 7,100 MB/s
  • Sequential write speedUp to 3,700 MB/s
  • Interface typePCI-Express 4.0 x4
  • Form factorE1.L 9.5 mm
  • NAND flash type144L TLC 3D NAND
  • 36 TB capacity stores massive datasets
  • PCIe 4.0 x4 interface delivers up to 7100 MBps reads
  • 1 M random read IOPS accelerates transaction-heavy workloads
  • 0 PBW endurance supports sustained write traffic
  • 2 M-hour MTBF ensures long-term server reliability

Capacity and form factor

The Solidigm D7-P5520 delivers 15.36TB in the E1.L 9.5mm ruler form factor. It is built for dense server chassis that accept this specific length and thickness. Buyers needing a 2.5-inch U.2 or U.3 drive cannot use this model.

PCIe 4.0 x4 interface limits

The drive connects through a PCI-Express 4.0 x4 link, capping throughput at the lane speed of that generation. Systems limited to PCIe 3.0 will reduce sequential and random performance accordingly. Boards without an E1.L connector or without bifurcation for x4 lanes cannot host the drive.

Build quality and daily implications

The 144L TLC 3D NAND is rated for 28.0 PBW endurance with a 2,000,000-hour MTBF. Opal security encrypts data at rest without host software overhead. Idle power sits at 5W and active power at 20W, so thermal planning must account for sustained write workloads in a 0°C to 70°C operating range.

How it compares

Measured against everything we stock in Server & Data Center SSDs, at today’s prices. Recalculated every night.

Price $8,758.99
Pricier than about 90% of the 1,039 comparable items (median $992.99).
Total capacity 15.36 TB
Higher than about 90% of the 522 comparable items (median 3.2 TB).
Sequential read speed Up to 7,100 MB/s
Higher than about 80% of the 311 comparable items (median 6,500 MB/s).
Price per TB $570.25 per TB
Typical for this category: the median of 522 items is $595.64 per TB.

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Specifications

Product
Brand nameSolidigm
Model nameD7-P5520
Part numberSSDPFWKX153T1OS
Total capacity15.36 TB
Performance
Sequential read speedUp to 7,100 MB/s
Sequential write speedUp to 3,700 MB/s
Random read (4K)1,000,000 IOPS (4K Blocks)
Random write (4K)200,000 IOPS (4K Blocks)
Storage
NAND flash type144L TLC 3D NAND
Write endurance28.0 PBW
Ports & slots
Interface typePCI-Express 4.0 x4
Power
Idle power draw5 W
Active power draw20 W
Size & build
Form factorE1.L 9.5 mm
Product weight215g +/- 5g
Shipping weight0.17 kg
Package size140 × 110 × 17 mm
Environment & compliance
Operating temperature range0 °C to 70 °C
Max shock tolerance1,000 G (Max) at 0.5 msec
Vibration toleranceOperating 2.17 GRMS (5–700 Hz) Max
Non-Operating 3.13 GRMS (5–800 Hz) Max
More details
Mean time between failures2,000,000 h
Security featuresOpal

Questions about this item

Should I pick the 15.36TB E1.L 9.5mm version or a smaller capacity for my server?

The 15.36TB model delivers 28.0 PBW endurance and 1,000,000 random read IOPS, making it suited for heavy read-intensive workloads where maximum capacity per drive bay matters.

What does the 7100 MBps sequential read figure mean once the drive is installed in a real system?

That 7100 MBps is the peak PCIe 4.0 x4 throughput; sustained speeds will depend on your controller, queue depth, and thermal conditions inside the chassis.

How does the PCIe 4.0 x4 interface limit performance in practice?

The x4 link caps theoretical bandwidth at roughly 8 GBps, so the drive's 7100 MBps read and 3700 MBps write ratings sit within that ceiling.

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