
HP 691866-S21 400GB 6Gb/s SATA MLC 2.5-in Solid State Drive
Shop all HP parts (82,894) ›- Enterprise-grade performance and reliability
691866-S21 isn't on our shelf today — we source it to order. Request a quote and we'll confirm price and lead time within one business day.
Key specifications
See full specs ↓- Capacity
- 400GB
- Form Factor
- 2.5-inch
- Interface
- SATA 6Gb/s
- NAND Type
- MLC
- Drive Type
- Solid State Drive (SSD)
- Brand
- HP
Product details
The HP 691866-S21 is a 400GB 2.5-inch Solid State Drive featuring MLC NAND flash and a SATA 6Gb/s interface. It is designed for enterprise environments requiring high performance and endurance. This drive offers a significant capacity and speed upgrade for servers and storage systems.
Specifications
- Capacity
- 400GB
- Form Factor
- 2.5-inch
- Interface
- SATA 6Gb/s
- NAND Type
- MLC
- Drive Type
- Solid State Drive (SSD)
- Brand
- HP
- Part Number
- 691866-S21
Description
The HP 691866-S21 is a high-capacity 400GB Solid State Drive designed for demanding enterprise applications. It utilizes a 2.5-inch form factor, making it compatible with a wide range of server and storage solutions. The drive is built with Multi-Level Cell (MLC) NAND flash, which provides a good balance of performance, endurance, and cost-effectiveness for enterprise workloads. Featuring the SATA 6Gb/s interface, this SSD offers significantly faster data transfer speeds compared to older SATA generations. This allows for quicker access to data, reduced latency, and improved overall system responsiveness, making it ideal for I/O-intensive applications such as databases, virtualization, and high-performance computing. This enterprise-grade SSD is engineered for reliability and sustained performance. Its solid-state nature ensures greater durability against physical shock and vibration, while also offering lower power consumption and quieter operation than traditional hard drives. The 400GB capacity provides ample space for critical data and applications, making it a versatile choice for upgrading server storage.
Condition: Refurbished
Free U.S. ground shipping
Typically 1–2 days handling, 3–7 days in transit.
Purchase orders accepted
Government, enterprise, data center and small business.
Buying 10+ units?
Get volume pricing and availability for 691866-S21.




