HP 537809-S21 300GB 10K SAS NHP 2.5" Drive (5-Pack)

Name: HP 537809-S21 300GB 10K SAS NHP 2.5" Drive (5-Pack)
Brand: HP
SKU: SAS NHP

Five-pack of HP 300GB 10K RPM SAS 2.5-inch drives for cost-effective enterprise server storage expansion.

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Overview

The HP 537809-S21 is a five-pack of 300GB 2.5-inch SAS hard drives spinning at 10,000 RPM with a 6Gb/s interface. Designed for HP ProLiant servers and compatible enterprise storage systems, these drives deliver the throughput and reliability needed for demanding server workloads including database operations, virtualization, and application hosting. The dual-port (DP) SAS design allows for multipath I/O configurations, providing path failover and load balancing in supported storage environments.

As NHP (Non-Hot-Plug) drives, these are intended for server chassis that do not feature hot-swappable drive bays, meaning the server must be powered down for installation or replacement. The five-pack format makes them well-suited for populating multiple drive bays at once—whether building a new RAID array or performing a bulk replacement in an existing system. At 300GB per drive, the total raw capacity across all five is 1.5TB, which is modest by today's standards but remains appropriate for legacy environments where maintaining compatibility with existing hardware and configurations is the priority.

Specifications

Brand

Part Number

537809-S21

Capacity (per drive)

300GB

Total Capacity (5-pack)

1.5TB

Interface

6Gb/s SAS

Spindle Speed

10,000 RPM

Form Factor

2.5-inch

Drive Type

Dual-Port Non-Hot-Plug (DP NHP) SAS

Quantity

5-Pack

Pros & Cons

👍 Pros

Five-pack provides 1.5TB of total enterprise-grade SAS storage at a lower per-drive cost
10K RPM spindle speed delivers faster read/write performance than standard 7.2K RPM drives
2.5-inch small form factor fits compact server chassis and high-density storage configurations
6Gb/s SAS interface supports dual-port connectivity for path redundancy
Enterprise-class reliability designed for 24/7 server and data center operation

👎 Cons

300GB per drive is a small capacity by current standards, requiring more drives for large storage needs
NHP (Non-Hot-Plug) design requires server downtime for drive installation or replacement
Mechanical spinning drives are slower and more failure-prone than modern SSDs
SAS interface limits compatibility to servers with SAS controllers or backplanes
No drive trays or caddies are mentioned, which may need to be purchased separately

Frequently Asked Questions

What does "NHP" mean for these SAS drives?

NHP stands for Non-Hot-Plug. These drives cannot be swapped while the server is running—the system must be powered down before installing or removing them. They are designed for servers and enclosures that do not have hot-plug drive bays.

What servers are these HP 537809-S21 drives compatible with?

These drives are compatible with HP ProLiant servers and storage systems that support 2.5-inch 6Gb/s SAS interfaces. Check your server's QuickSpecs documentation against HP part number 537809-S21 to confirm compatibility with your specific model.

Why buy a five-pack instead of individual drives?

Purchasing a five-pack provides cost savings per drive and ensures you have matched drives from the same product line, which is beneficial when building RAID arrays or expanding storage capacity across multiple bays simultaneously.

What is the expected lifespan of these 10K RPM SAS drives?

Enterprise SAS drives are rated for continuous 24/7 operation and typically carry a mean time between failures (MTBF) rating in the hundreds of thousands of hours. Actual lifespan depends on workload, temperature, and operating conditions.

Can these drives be used in non-HP servers?

The bare drives use the standard SAS interface and can work in other servers, but the HP drive tray or carrier may be HP-specific. Verify that your server's backplane and drive bay dimensions are compatible.