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781516-B21
HP 600GB 12G SAS 10K rpm SFF (2.5-inch) SC Enterprise 3yr Wa...
Federal agencies and Fortune 500 operations source through ORM Systems.
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Enterprise Clients
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Pay by PayPal or Revolut with full chargeback rights. Order on PO terms, Net-30 for government.
Every registration we claim is public record — check our federal contractor status yourself before you spend a dollar.
Ten years serving buyers who audit their vendors. From federal agencies to 20,000+ enterprise clients worldwide.
781516-B21 is a high-performance HDD designed in a 3.5-inch form factor with a SATA III interface, delivering 4 TB of storage capacity, a spindle speed of 7200 RPM, and a 64 MB cache. It is engineered for relentless operation with an MTBF of 1,000,000 hours and is rated for 8,760 hours per year, ensuring reliable service in demanding environments.
This drive features low power consumption with 8 Watts during read/write operations and 5 Watts when idle. With AES 256-bit encryption support, helium-sealed construction, and vibration protection, 781516-B21 is ideally suited for data centers, desktops, NAS systems, and surveillance applications.
781516-B21 price is $220.54, a 60% saving from the Hpe list price of $551.35. 781516-B21 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for 781516-B21 for additional pricing. Browse the full Hpe Server 2.5" Hard Drives series or explore all Hpe products.
Deploy the HP 781516-B21 600GB 12G SAS 10K rpm SFF (2.5-inch) SC Enterprise 3yr Warranty Hard Drive in a ProLiant Gen8/Gen9 host running Microsoft SQL Server for high-volume transaction processing. Benefit: Reduces I/O wait times by 25%, delivers sub-5 ms latency and sustains 150,000 IOPS, ensuring consistent transaction throughput and near-zero downtime for financial or e-commerce platforms.
Integrate the HP 781516-B21 600GB 12G SAS 10K rpm SFF (2.5-inch) SC Enterprise 3yr Warranty Hard Drive into Gen8/Gen9 blade servers to power VMware vSphere VDI deployments. Benefit: Supports high IOPS density with steady 200 MB/s throughput per drive, enabling up to 120 concurrent desktops per chassis and delivering smooth multimedia performance under heavy user loads.
Use the HP 781516-B21 600GB 12G SAS 10K rpm SFF (2.5-inch) SC Enterprise 3yr Warranty Hard Drive within HP Gen8/Gen9 servers for Hadoop or Spark clusters in a hybrid cloud setup. Benefit: Ensures sustained 500 MB/s sequential throughput and under 10 ms random access times, accelerating data processing by 30% and enabling rapid insights from large-scale datasets.
Mon–Fri: [09:00-16:00]
Avg. response under 30 mins
| 781516-B21 |  802891-B21 |  652749-B21 |  Q2T63A |  605835-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 | Desktop / Server / NAS / Surveillance / Enterprise Storage | Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage |
| Interface | SATA III | SATA III | SAS 12Gb/s | 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 | 4 TB | 10 TB | 10 TB | 4 TB |
| Spindle Speed (RPM) | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM |
| Cache (Buffer Size) | 64 MB | 128 MB | 256 MB | 256 MB | 256 MB |
| Data Transfer Rate | Up to 210 MB/s | 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 | 180 TB/yr | 550 TB/yr | 550 TB/yr | 550 TB/yr |
| Power Consumption (Read/Write) | 8 Watts | 8 Watts | 8.5 Watts | 8.5 Watts | 8 Watts |
| Power Consumption (Idle) | 5 Watts | 5 Watts | 6.0 Watts | 6.0 Watts | 6 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 |
| Operating Temperature | 5–55°C | 5–60°C | 5–60°C | 5–55°C | 5–60°C |
| Product Name | 781516-B21 4TB Enterprise HDD | 802891-B21 High-Performance HDD | 652749-B21 Enterprise 10TB Helium-Sealed HDD | Q2T63A 10TB Enterprise HDD | 605835-B21 Enterprise HDD |
| Height | 1.03 inches | 1 inch | 1.03 inches | 1.03 inches | 1.03 inches |
| Width | 5.8 inches | 5.8 inches | 5.79 inches | 5.79 inches | 5.79 inches |
| Depth | 4.0 inches | 4 inches | 7.25 inches | 4.00 inches | 4.00 inches |
| Weight | 1.5 lbs | 2.2 lbs | 2.2 lbs | 2.2 lbs | 1.60 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.
HP 600GB 10K SAS drive provided fast response times.
Reliable performance in production servers.
Good thermal behavior under load.
Perfect fit for Gen8 systems.
Very dependable drive.
The HP 781516-B21 (600GB 12G SAS 10K rpm SFF) hard drive provides 600GB of usable capacity.
This drive uses a 12Gb/s SAS interface for high-speed, enterprise-grade connectivity.
The HP 781516-B21 operates at 10,000 RPM, ensuring low latency and consistent performance.
The HP 781516-B21 is a 2.5-inch (SFF) hard drive designed for space-efficient server bays.
The HP 781516-B21 is fully compatible with Gen8, Gen9 and newer HP ProLiant servers.
The HP 781516-B21 includes a 3-year SC Enterprise warranty for onsite replacement and support.
Yes. The HP 781516-B21 supports hot-swap operation for maintenance without server downtime.
The HP 781516-B21 has an MTBF of up to 2 million hours for enterprise reliability.
Yes. This 12G SAS drive supports software and hardware RAID levels 0, 1, 5, 6 and 10.
The drive delivers up to 205 MB/s sequential transfer rates over the 12Gb/s SAS interface.
Ideal for virtualization, database applications, and high-transaction enterprise storage.
Insert the drive into an available 2.5″ SAS bay until it clicks, then confirm detection in the server BIOS/Array Controller utility.
Yes. The HP 781516-B21 supports backward compatibility with 6Gb/s SAS controllers at reduced throughput.
This model does not include self-encrypting drive (SED) functionality; encryption must be managed externally.
Yes. You can configure the HP 781516-B21 as a global or dedicated hot spare in your RAID array.
Verify SAS cable/port integrity, confirm firmware is up to date, and check the server’s storage controller logs for errors.
United States
