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504338-001
HP 320GB 3.5TH SATA300 7200RPM HDD
Trusted by the Highest-Stakes Buyers
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US Government & Defense




Enterprise Clients
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504338-001 is a high-performance HDD designed in a 3.5-inch form factor that uses a SATA III interface and operates at 7200 RPM. It offers a robust capacity of 4 TB with a 128 MB cache and is engineered to handle an annual workload of 300 TB/yr, supported by an impressive MTBF of 1,000,000 hours and a reliability rating suitable for 24x7 operation. Its advanced design features include helium sealing, vibration protection, and dual actuator technology, ensuring consistent performance even under rigorous operational conditions.
This drive is optimized for use in data centers, desktop systems, network attached storage (NAS), and surveillance applications. With low power consumption figures of 8 Watts during read/write operations and 5 Watts in idle mode, it meets the demanding performance standards required by both enterprise and high-performance computing environments while delivering enhanced data protection and operational efficiency.
504338-001 price for new stock is is available on request. Get immediate quote. 504338-001 refurb price is $104.82.
Request bulk order quote for 504338-001 for additional pricing. Browse the full category range or explore all Hpe products.
Deploy the HP 504338-001 320GB SATA300 7200RPM HDD as Tier-2 storage in VMware or Hyper-V hosts to deliver low-latency I/O, seamless VM migrations and improved server uptime, ensuring cost-effective performance and reduced operational bottlenecks.
Integrate the HP 320GB SATA300 7200RPM drive into RAID-1 or RAID-5 arrays for mission-critical backup solutions, providing fast data writes, rapid restore capabilities and robust fault tolerance to safeguard business information and minimize recovery time objectives (RTO).
Install the HP 504338-001 HDD in network video recorders (NVRs) to support continuous, write-intensive streams from up to 32 HD cameras, enabling uninterrupted footage capture, instant playback and compliance with retention policies for comprehensive premises monitoring.
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| 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 | 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 | 3.5-inch | 3.5-inch |
| Storage Capacity | 4 TB | 6 TB | 8 TB | 8 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 |
| Data Transfer Rate | Up to 250 MB/s | Up to 250 MB/s | Up to 210 MB/s | Up to 250 MB/s | Up to 250 MB/s |
| Annual Workload Rating | 300 TB/yr | 550 TB/yr | 550 TB/yr | 300 TB/yr | 550 TB/yr |
| Power Consumption (Read/Write) | 8 Watts | 8.5 Watts | 8.0 Watts | 8.5 Watts | 6.0 Watts |
| Power Consumption (Idle) | 5 Watts | 6.5 Watts | 4.0 Watts | 5 Watts | 4.5 Watts |
| Encryption Support | AES 256-bit | AES 256-bit | AES 256-bit | AES 256-bit | No |
| 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 | 5–55°C | 5–60°C | 5–60°C | 5–60°C |
| Product Name | 504338-001 4TB Enterprise HDD | Y1T49AA Enterprise HDD | 345N0AA Enterprise HDD | T9H99AA High Performance HDD | QB576AA |
| Height | 1 in | 1.03 inches | 1.03 inches | 1.03 inches | 1.02 inches |
| Width | 5.79 in | 5.79 inches | 4 inches | 5.78 inches | 4.00 inches |
| Depth | 4 in | 8.36 inches | 5.79 inches | 4.01 inches | 5.79 inches |
| Weight | 1.5 lbs | 2.2 lbs | 1.4 lbs | 2.3 lbs | 2.4 lbs |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reviewed on the 18 September 2017
SATA HDD performs reliably for basic storage.
Reviewed on the 20 December 2019
Easy installation and stable use.
Reviewed on the 24 September 2020
Good legacy drive.
Reviewed on the 7 June 2018
Predictable behavior.
Reviewed on the 24 March 2024
Solid HDD.
The HP 504338-001 features 320 GB capacity, SATA II (3 Gb/s) interface, 3.5″ form factor, 7200 RPM spindle speed and 8 MB cache for reliable performance.
This drive uses the SATA II (SATA300) 3 Gb/s interface, ensuring broad compatibility with modern servers and desktops.
The HP SKU 504338-001 is a standard 3.5-inch hard disk drive designed for both desktop and rack-mount installations.
This model spins at 7200 RPM, offering a balance of performance and reliability for general storage needs.
Yes, the 504338-001 is fully validated for HP ProLiant rack and tower servers, meeting HP’s server firmware and performance standards.
Absolutely. The drive’s SATA II interface and 3.5″ form factor are compatible with most consumer motherboards and chassis.
The typical average seek time is 9 ms, providing responsive data access for everyday computing tasks.
The interface supports up to 300 MB/s, with sustained internal transfer rates around 80–100 MB/s under typical workloads.
Yes, the drive supports NCQ to optimize command ordering and improve performance under multi-threaded workloads.
Mount the drive in a 3.5″ bay, connect a SATA data cable to your motherboard and a SATA power cable from your PSU, then configure it in BIOS or RAID utility.
The recommended operating temperature is 5 °C to 55 °C, ensuring reliable operation in typical data center or office environments.
This HDD comes with a standard one-year HP limited warranty covering defects in materials and workmanship.
Operating power draw is approximately 8.4 W during read/write and 5.1 W at idle, making it energy-efficient for sustained use.
Acoustic levels are rated at 27 dBA idle and 31 dBA seek, delivering quiet performance in desktop and server settings.
The HP 320 GB SATA300 7200 RPM HDD has an MTBF of 1.2 million hours, reflecting its durability for continuous operation.
No, the drive ships unformatted; you must initialize and format it within your operating system or RAID controller before use.