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High speed SAS drive suitable for demanding workloads.
737261-B21
HP 300GB 12G SAS 15K RPM LFF 3.5-INCH SC CONVERTER HDD
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737261-B21
- Description:
- HP 300GB 12G SAS 15K RPM LFF 3.5-INCH SC CONVERTER HDD
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737261-B21 Overview
737261-B21 is a high-performance HDD designed with a 3.5-inch form factor and a SATA III interface. It delivers a robust 7200 RPM spindle speed with 4 TB of storage capacity, complemented by a 128 MB cache. The drive meets a rigorous annual workload rating of 180 TB/yr and features an impressive MTBF that underpins its reliability, making it ideal for intensive usage environments.
The 737261-B21 is tailored for desktop, server, NAS, and surveillance use cases, offering optimal power consumption for read/write and idle operations. Advanced features include a helium-sealed design with vibration protection and dual actuator technology, ensuring smooth operation in data centers, desktops, NAS systems, and surveillance setups.
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Request bulk order quote for 737261-B21 for additional pricing. Browse the full Hpe Server 3.5" Hard Drives series or explore all Hpe products.
737261-B21 Specifications
- Product Type
- Hard Drive
- Drive Type
- HDD
- Use Case
- Desktop / Server / NAS / Surveillance / Enterprise Storage
- Interface
- SATA III
- Form Factor
- 3.5-inch
- Storage Capacity
- 4 TB
- Spindle Speed (RPM)
- 7200 RPM
- Cache (Buffer Size)
- 128 MB
- Average Latency
- N/A
- Data Transfer Rate
- Up to 250 MB/s
- Annual Workload Rating
- 180 TB/yr
- Power Consumption (Read/Write)
- 8.5 Watts
- Power Consumption (Idle)
- 5.5 Watts
- Encryption Support
- AES 256-bit
- Helium Sealed
- Helium-Sealed
- Drive Bays Supported
- Multi-bay
- Vibration Protection
- Yes
- Advanced Features
- Dual Actuator
- Operating Temperature
- 5–60°C
- Product Name
- 737261-B21
- Height
- 1 in
- Width
- 4 in
- Depth
- 5.8 in
- Weight
- 1.6 lbs
737261-B21 Use Case
Accelerating High-Frequency Trading Engines with 737261-B21 HP 300GB 12G SAS 15K RPM LFF 3.5-INCH SC Converter HDD
In a financial services firm’s data center, an algorithmic trading platform leverages the 737261-B21 HP 300GB 12G SAS 15K RPM LFF 3.5-INCH SC Converter HDD as primary storage for low-latency order matching. By delivering sustained 200,000 IOPS and sub-millisecond seek times, this drive ensures real-time market data ingestion, reduces trade execution slippage, and boosts overall throughput by 35%, strengthening competitive advantage.
Optimizing VMware VDI Performance with 737261-B21 HP 300GB 12G SAS 15K RPM LFF 3.5-INCH SC Converter HDD
A global consultancy deploys the 737261-B21 HP 300GB 12G SAS 15K RPM LFF 3.5-INCH SC Converter HDD in a VMware vSphere cluster to host 800+ persistent desktops. High rotational speed and enterprise-grade SAS interface cut boot storms by 50%, accelerate login times by 40%, and maintain consistent I/O under peak loads, elevating end-user satisfaction and reducing helpdesk tickets.
Enhancing Big Data Analytics Nodes with 737261-B21 HP 300GB 12G SAS 15K RPM LFF 3.5-INCH SC Converter HDD
In a healthcare analytics environment, Hadoop data nodes integrate the 737261-B21 HP 300GB 12G SAS 15K RPM LFF 3.5-INCH SC Converter HDD to store intermediate data sets. The drive’s high throughput and 12 Gb/s SAS bandwidth accelerate map-reduce jobs by 30%, shorten ETL cycles, and enable near-real-time insights on patient records, ensuring compliance and driving faster clinical decision support.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 737261-B21 |  801884-B21 |  872346-B21 |  875492-B21 |  872487-B21 | |
|---|---|---|---|---|---|
| Product Type | Hard Drive | Hard Drive | Hard Drive | Hard Drive | Hard Drive |
| Drive Type | HDD | HDD | HDD | HDD | HDD |
| Use Case | Desktop / Server / NAS / Surveillance / Enterprise Storage | Enterprise Storage | Server | Desktop / Server / NAS / Surveillance / Enterprise Storage | Enterprise Storage |
| Interface | SATA III | SATA III | SATA III | SATA III | SATA III |
| Form Factor | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch |
| Storage Capacity | 4 TB | 8 TB | 8 TB | 4 TB | 4 TB |
| Spindle Speed (RPM) | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM |
| Cache (Buffer Size) | 128 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Average Latency | N/A | N/A | 8.5 ms | N/A | N/A |
| Data Transfer Rate | Up to 250 MB/s | Up to 250 MB/s | Up to 250 MB/s | Up to 210 MB/s | Up to 250 MB/s |
| Annual Workload Rating | 180 TB/yr | 550 TB/yr | 550 TB/yr | 550 TB/yr | 550 TB/yr |
| Power Consumption (Read/Write) | 8.5 Watts | 8 Watts | 8.5 Watts | 8 Watts | 8 Watts |
| Power Consumption (Idle) | 5.5 Watts | 6 Watts | 5.0 Watts | 5 Watts | 4 Watts |
| Encryption Support | AES 256-bit | No | AES 256-bit | AES 256-bit | AES 256-bit |
| Helium Sealed | Helium-Sealed | Helium-Sealed | Helium-Sealed | Helium-Sealed | Helium-Sealed |
| Drive Bays Supported | Multi-bay | Multi-bay | Multi-bay | Multi-bay | Multi-bay |
| Vibration Protection | Yes | Yes | Yes | Yes | Yes |
| Advanced Features | Dual Actuator | Dual Actuator | Dual Actuator | Dual Actuator | Dual Actuator |
| Operating Temperature | 5–60°C | 5–60°C | 5–55°C | 5–60°C | 5–60°C |
| Product Name | 737261-B21 | 801884-B21 Enterprise HDD | 872346-B21 Enterprise Helium-Sealed HDD | 875492-B21 Enterprise 4TB HDD | 872487-B21 Enterprise HDD |
| Height | 1 in | 1.03 inches | 1.03 inches | 1.0 inches | 1.02 inches |
| Width | 4 in | 5.79 inches | 5.79 inches | 5.8 inches | 5.79 inches |
| Depth | 5.8 in | 7.78 inches | 4.00 inches | 8.5 inches | 4.00 inches |
| Weight | 1.6 lbs | 2.2 lbs | 2.20 lbs | 2.0 lbs | 3.0 lbs |
Reviews & Ratings
N
Nabeel Arif
5
Low latency and strong performance.
P
Paolo Greco
4
Reliable enterprise grade disk.
H
Haris Latif
5
Works well in production.
S
Sven Larsson
5
Excellent stability.
Questions & Answers
What are the key specifications of the HP 737261-B21 300GB SAS 15K RPM LFF converter HDD?
The HP 737261-B21 offers 300 GB capacity, 12 Gb/s SAS interface, 15 000 RPM spindle speed, 3.5-inch LFF form factor, and SC converter technology for superior performance.
Which servers are compatible with the HP 737261-B21 HDD?
This drive is fully compatible with HP ProLiant Gen8 and Gen9 servers, HP Apollo storage systems, and any SAS-enabled chassis supporting 3.5-inch LFF bays.
Is the 737261-B21 hot‐swappable?
Yes, the HP 737261-B21 is hot-swappable in supported HP enclosures, allowing drive replacement or upgrade without server downtime.
How does the SC converter enhance drive performance?
The SC converter design optimizes signal integrity and reduces latency, delivering faster seek times and improved IOPS for mission-critical workloads.
What RAID levels are supported with this HP SAS drive?
When used with HP Smart Array controllers, the drive supports RAID 0, 1, 5, 6, 10, 50, and 60 for flexible data protection and performance.
What are the typical use cases for the HP 737261-B21?
Ideal for high-transaction databases, virtualization, e-mail servers, and enterprise applications requiring low latency and high throughput.
What is the average data transfer rate of this HDD?
The HP 737261-B21 delivers sustained transfer rates up to 210 MB/s, maximizing data throughput in demanding environments.
What is the mean time between failures (MTBF) for this drive?
The drive is rated at 2 million hours MTBF, ensuring industry-leading reliability and continuous operation.
Which cable or backplane is required for installation?
No additional cable is needed if installing in an HP SAS backplane-equipped chassis; simply slide the drive into an available 3.5-inch bay.
How do I install the HP 737261-B21 in my server?
Power down the host if not hot-swappable, insert the drive into an empty 3.5-inch LFF bay or hot-swap cage, then secure latches or screws as needed.
Does HP provide a warranty for this HDD?
Yes, HP includes a one-year limited warranty with optional extensions up to five years via Care Pack services.
How does this drive differ from a 10K RPM SAS HDD?
At 15K RPM, the 737261-B21 offers up to 50% faster seek times and higher IOPS compared to 10K RPM models, ideal for latency-sensitive applications.
Can I mix the 737261-B21 with other spindle speeds in a RAID array?
HP recommends uniform spindle speeds in RAID arrays to maintain consistent performance and avoid bottlenecks.
What maintenance is required for the HP 737261-B21?
Regular monitoring via HP Array Configuration Utility and firmware updates through HP Service Pack for ProLiant (SPP) ensure optimal performance.
Where can I purchase genuine HP 737261-B21 drives?
Authorized HP resellers, the HP official online store, and select enterprise hardware distributors stock this genuine HP part.