Seagate
Seagate Cheetah NS ST3400755SSProduct 400 GB 3.5" SAS internal hard drive
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Solidigm
Solidigm D7-P5520 3.84TB U.2 15mm enterprise SSD SSDPF2KX038T1OF
3.84 TB U.2 15 mm enterprise SSD with PCIe 4.0 x4, 144L TLC 3D NAND, 6 700 MB/s read, 3 600 MB/s write, 1 000 000/200 000 random IOPS, 7.0 PBW endurance and FIPS security
- Form FactorU.2 15mm
- Capacity3.84TB
- Memory Components144L TLC 3D NAND
- InterfacePCI-Express 4.0
- Max Sequential ReadUp to 6700 MBps
- Max Sequential WriteUp to 3600 MBps
- Up to 6700 MB/s sequential read speeds with PCIe 4.0 x4 interface
- 1 million random read IOPS for low-latency transactional workloads
- 0 PBW endurance rating sustains heavy write cycles over drive life
- FIPS security certification protects sensitive data at rest
- 2 million hour MTBF supports continuous operation in dense server chassis
Data-centre SSD for read-intensive workloads
The Solidigm D7-P5520 is a 3.84TB enterprise drive built on 144L TLC 3D NAND with a U.2 15mm form factor. It connects through a PCI-Express 4.0 interface and delivers up to 6700 MBps sequential read and 3600 MBps sequential write speeds. The drive is rated for 7.0 PBW endurance and a 2,000,000-hour MTBF, and it includes FIPS security validation.
Suited to read-heavy server roles.
This SSD fits database servers, content-delivery nodes and analytics platforms that demand high random-read IOPS of 1000000 and moderate write IOPS of 200000. Its 15W active power and 5W idle draw suit dense 2.5-inch bays with standard cooling. Buyers who need substantially higher write endurance or a smaller M.2 footprint should evaluate other form factors.
PCIe 4.0 x4 lane width governs peak throughput
The drive requires a backplane or riser that can supply four PCIe 4.0 lanes to reach the stated 6700 MBps read ceiling. If the host slot negotiates at a lower generation or lane count, sequential and random performance will scale down accordingly. Confirm the platform PCIe topology before purchase.
Highlights
- Up to 6700 MB/s sequential read speeds with PCIe 4.0 x4 interface
- 1 million random read IOPS for low-latency transactional workloads
- 0 PBW endurance rating sustains heavy write cycles over drive life
- FIPS security certification protects sensitive data at rest
- 2 million hour MTBF supports continuous operation in dense server chassis
Specifications
| Brand | Solidigm |
|---|---|
| Model | D7-P5520 |
| Part Number | SSDPF2KX038T1OF |
| Form Factor | U.2 15mm |
| Capacity | 3.84TB |
| Memory Components | 144L TLC 3D NAND |
| Interface | PCI-Express 4.0 |
| Max Sequential Read | Up to 6700 MBps |
| Max Sequential Write | Up to 3600 MBps |
| 4KB Random Read | 1000000 IOPS (4K Blocks) |
| 4KB Random Write | 200000 IOPS (4K Blocks) |
| Endurance | 7.0 PBW |
| MTBF | 2,000,000 hours |
| Security | FIPS |
| Power Consumption (Idle) | 5W |
| Power Consumption (Active) | 15W |
| Max Shock Resistance | 1,000 G (Max) at 0.5 msec |
| Max Vibration Resistance | Operating: 2.17 GRMS (5 - 700 Hz) Max Non-Operating: 3.13 GRMS (5 - 800 Hz) Max |
| Weight | 165g +/- 5g |
| Shipping weight | 0.17 kg |
| Package size | 140 × 110 × 17 mm |
Questions about this item
What server backplane or adapter is required for the U.2 15mm form factor?
A U.2 15mm bay or an adapter that accepts a 2.5-inch 15mm drive and provides a PCIe 4.0 x4 link is required for the D7-P5520 to operate.
Will the PCIe 4.0 x4 interface run at full speed on a PCIe 3.0 backplane?
The drive will operate on a PCIe 3.0 backplane but sequential read and write speeds will be limited to the 3.0 bandwidth ceiling.
How can I verify the drive delivers the rated 1,000,000 random read IOPS after installation?
Run a 4K random read benchmark at queue depth 32 or higher and confirm sustained IOPS approaching 1,000,000 with the drive at steady state.
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