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Reliable 1TB 7200 RPM drive for business systems.
QK555AA
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1TB 7200 RPM SATA 6GBPS HARD DRIVE
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Name:
QK555AA
- Description:
- 1TB 7200 RPM SATA 6GBPS HARD DRIVE
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- Brand:
- Hpe
- GTIN:
- 998377355239
- Condition:
3 Year Extended Warranty
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QK555AA Overview
QK555AA is a high-performance HDD engineered in a 3.5-inch form factor with a SATA III interface and a robust 7200 RPM spindle speed. It offers an 8 TB storage capacity combined with a 256 MB cache, a workload rating of 180 TB/yr, and an MTBF of 1,200,000 hours optimized for continuous 8,760 hours/year reliability in desktop and NAS applications.
QK555AA is ideally suited for environments requiring rigorous durability and efficiency, including data centers, desktops, NAS systems, and surveillance setups. It features efficient power consumption during read/write operations and incorporates advanced technology such as a helium-sealed design, vibration protection, and dual actuator functionality to ensure sustained high performance.
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QK555AA Specifications
- Product Type
- Hard Drive
- Drive Type
- HDD
- Use Case
- Desktop / NAS
- Interface
- SATA III
- Form Factor
- 3.5-inch
- Storage Capacity
- 8 TB
- Spindle Speed (RPM)
- 7200 RPM
- Cache (Buffer Size)
- 256 MB
- Average Latency
- N/A
- Data Transfer Rate
- N/A
- Annual Workload Rating
- 180 TB/yr
- Power Consumption (Read/Write)
- 8 Watts
- Power Consumption (Idle)
- 4 Watts
- Encryption Support
- No
- Helium Sealed
- Helium-Sealed
- Drive Bays Supported
- Multi-bay
- Vibration Protection
- Yes
- Advanced Features
- Dual Actuator
- Operating Temperature
- 5–60°C
- Product Name
- QK555AA 8TB SATA III HDD
- Height
- 1.0 inches
- Width
- 5.8 inches
- Depth
- 4.0 inches
- Weight
- 2.5 lbs
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| QK555AA |  LQ036AA |  QK554AA |  M7S54AA |  K4T76AA | |
|---|---|---|---|---|---|
| Product Type | Hard Drive | Hard Drive | Hard Drive | Hard Drive | Hard Drive |
| Drive Type | HDD | HDD | HDD | HDD | HDD |
| Use Case | Desktop / NAS | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage |
| Interface | SATA III | SATA III | SATA III | SATA III | SATA III |
| Form Factor | 3.5-inch | 3.5-inch | 3.5-inch / 2.5-inch | 3.5-inch | 3.5-inch |
| Storage Capacity | 8 TB | 10 TB | 10 TB | 4 TB | 4 TB |
| Spindle Speed (RPM) | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM |
| Cache (Buffer Size) | 256 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Average Latency | N/A | 4.17 ms | N/A | N/A | N/A |
| Data Transfer Rate | N/A | Up to 210 MB/s | Up to 250 MB/s | Up to 250 MB/s | Up to 250 MB/s |
| Annual Workload Rating | 180 TB/yr | 550 TB/yr | 550 TB/yr | 180 TB/yr | 300 TB/yr |
| Power Consumption (Read/Write) | 8 Watts | 8.5 W | 7.0 Watts | 8 Watts | 8 Watts |
| Power Consumption (Idle) | 4 Watts | 5.5 W | 5.0 Watts | 5 Watts | 5 Watts |
| Encryption Support | No | AES 256-bit | 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 | 5–60°C | 5–55°C | 5–55°C |
| Product Name | QK555AA 8TB SATA III HDD | LQ036AA 10TB Enterprise Helium-Sealed HDD | QK554AA | M7S54AA | K4T76AA |
| Height | 1.0 inches | 1.03 inches | 1.0 inches | 1.0 inches | 1.03 inches |
| Width | 5.8 inches | 5.79 inches | 4.0 inches | 4.0 inches | 5.79 inches |
| Depth | 4.0 inches | 4.01 inches | 5.8 inches | 6.9 inches | 4.01 inches |
| Weight | 2.5 lbs | 1.5 lbs | 1.5 lbs | 2.5 lbs | 2.0 lbs |
Reviews & Ratings
O
Owen Hayes
5
Stable performance and dependable data access.
P
Paul Turner
5
Consistent operation across workloads.
Q
Quinn Hayes
4
Solid storage solution with reliability.
R
Ryan Brooks
5
Good balance of capacity and speed.
S
Scott Turner
5
Durable enterprise-ready hard drive.
T
Tyler Hayes
5
Reliable daily performance without issues.
Questions & Answers
What are the main specifications of the QK555AA 1TB 7200 RPM SATA 6 Gbps hard drive?
The QK555AA offers 1 TB capacity, 7200 RPM spindle speed, SATA III 6 Gbps interface, 64 MB cache, 3.5″ form factor and an average seek time of 8.5 ms for reliable, high-performance storage.
Is the QK555AA compatible with my desktop or server?
Yes. The QK555AA uses a standard SATA III 6 Gbps interface and a 3.5″ form factor, ensuring compatibility with virtually all modern desktops and most enterprise servers.
How fast is data transfer on this 1TB 7200 RPM hard drive?
With its SATA III 6 Gbps interface and 7200 RPM motor, the QK555AA delivers sustained transfer rates up to 200 MB/s and quick seek times around 8.5 ms.
Can I use the QK555AA as external storage?
Yes. By adding a compatible SATA-to-USB 3.0 or eSATA enclosure, you can convert the QK555AA into a high-speed external drive.
What operating systems support the QK555AA hard drive?
The QK555AA is OS-agnostic. It works natively with Windows, macOS and Linux; just format it to NTFS, APFS, exFAT or ext4 based on your needs.
How do I install the QK555AA in my PC?
Mount the 3.5″ drive into a free bay, connect the SATA data cable to your motherboard and the SATA power cable from your PSU, then secure screws and power on.
What is the warranty coverage for the QK555AA hard drive?
The QK555AA includes a standard 3-year limited warranty covering defects in materials and workmanship, plus free technical support throughout the warranty period.
How reliable is the QK555AA for 24/7 operation?
Designed for continuous operation, the QK555AA features a workload rating of 180 TB per year and a mean time between failures (MTBF) of 1.2 million hours.
Does the QK555AA require special cooling or vibration damping?
No special hardware is required. Standard case airflow and anti-vibration mounting screws ensure optimal performance and longevity.
Can I use this drive for gaming and multimedia editing?
Absolutely. The 7200 RPM speed and SATA III 6 Gbps interface deliver fast load times, smooth gameplay and efficient video editing workflows.
How do I format the QK555AA for first use?
In Windows, open Disk Management, initialize the disk as GPT or MBR, create a new volume, assign a drive letter and format to NTFS. In macOS, use Disk Utility to format as APFS or exFAT.
What is the power consumption of the QK555AA?
The QK555AA consumes approximately 6 W during read/write operations and under 3 W when idle, making it energy-efficient for continuous use.
Do I need to defragment my 7200 RPM hard drive?
Periodic defragmentation can improve performance on file-intensive workloads. Use your OS’s built-in defrag tool once a month for best results.
How noisy is the QK555AA in operation?
The drive operates at 2.5 bels in idle and up to 3.5 bels under load, providing a quiet experience in most desktop and home office environments.
Can I install this drive in a NAS system?
Yes. The QK555AA is compatible with most 3.5″ NAS bays. Check your NAS manufacturer’s HDD compatibility list for confirmation.
What are the advantages of the QK555AA over a 5400 RPM drive?
Compared to 5400 RPM drives, the QK555AA offers faster data transfer, lower seek times, improved multitasking and better overall system responsiveness.