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725572-B21
HPE DL180 Gen9 8SFF Hard Drive Cage/Backplane Kit
Trusted by the Highest-Stakes Buyers
Federal agencies and Fortune 500 operations source through ORM Systems.
US Government & Defense




Enterprise Clients
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725572-B21 is a high-performance HDD engineered for demanding enterprise and NAS environments. Designed with a 3.5-inch form factor, this drive features a SATA III interface, a 7200 RPM spindle speed, 4 TB of storage capacity, and a 128 MB cache that delivers responsive performance. It boasts an annual workload rating of 300 TB/yr and a robust MTBF, ensuring dependable operation rated for continuous 24/7 use. The drive’s efficiency and reliability make it an ideal choice for desktops, servers, NAS systems, and surveillance applications.
Built to handle critical data center and enterprise storage workloads, 725572-B21 incorporates advanced features such as helium-sealed construction, vibration protection, and dual actuator technology. Its optimized power consumption of approximately 8.5 Watts during active read/write operations and 5.5 Watts at idle, combined with its durable design, supports a wide range of common use cases including data centers, desktops, NAS, and surveillance systems.
725572-B21 price for new stock is is available on request. Get immediate quote. 725572-B21 refurb price is $183.57.
Request bulk order quote for 725572-B21 for additional pricing. Browse the full Hpe Server Accessories series or explore all Hpe products.
IT infrastructure teams deploy the 725572-B21 HPE DL180 Gen9 8SFF Hard Drive Cage/Backplane Kit to upgrade VMware ESXi hosts from 4 to 8 SFF NVMe or SAS SSDs, doubling storage density in a 1U chassis. Benefit: Maximizes VM consolidation ratios, boosts I/O throughput by up to 2×, and reduces per-VM storage costs—delivering faster provisioning and higher ROI on existing blade networks.
Managed service providers integrate the 725572-B21 cage into HPE DL180 Gen9 rack servers to host eight 1.8” SAS/SATA drives in RAID-6 for local backup appliances. Benefit: Achieves sub-5-minute RTO, secure on-premise snapshots, and seamless offsite replication—ensuring business continuity, reducing data loss risk, and meeting compliance SLAs without expensive external arrays.
Data science teams leverage the 725572-B21 HPE DL180 Gen9 8SFF Backplane Kit to add eight high-capacity SAS drives for Hadoop HDFS or Splunk indexing nodes. Benefit: Delivers up to 150K IOPS per node, scales storage to petabytes, and accelerates query response times—enabling rapid insights on large datasets while maintaining predictable performance in distributed clusters.
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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 | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance |
| Interface | SATA III | SATA III | SAS 12Gb/s | SATA III | SATA III |
| Form Factor | 3.5-inch | 3.5-inch / 2.5-inch | 3.5-inch | 3.5-inch | 3.5-inch |
| Storage Capacity | 4 TB | 8 TB | 8 TB | 10 TB | 8 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 210 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 | 550 TB/yr | 300 TB/yr |
| Power Consumption (Read/Write) | 8.5 Watts | 8 Watts | 12 Watts | 9 Watts | 8 Watts |
| Power Consumption (Idle) | 5.5 Watts | 5 Watts | 7 Watts | 6 Watts | 6 Watts |
| Encryption Support | AES 256-bit | 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 | Rotational Vibration Sensors |
| Operating Temperature | 5–55°C | 5–60°C | 5–55°C | 5–60°C | 5–60°C |
| Product Name | 725572-B21 4TB 7200 RPM SATA III Enterprise HDD | J9F43A High-Performance Enterprise HDD | 873870-B21 | J9F39A Enterprise Hard Disk Drive | 835563-B21 8TB Enterprise HDD |
| Height | 1.04 inches | 1.03 inches | 1.03 inches | 1.03 inches | 1.03 inches |
| Width | 5.78 inches | 5.78 inches | 5.79 inches | 5.79 inches | 5.79 inches |
| Depth | 4.00 inches | 4.0 inches | 4.01 inches | 4.00 inches | 4.00 inches |
| Weight | 1.7 lbs | 2.0 lbs | 1.65 lbs | 1.75 lbs | 1.8 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 20 January 2018
Backplane kit enabled smooth drive expansion.
Reviewed on the 3 June 2023
All drives recognized immediately.
Reviewed on the 30 July 2019
OEM quality throughout.
Reviewed on the 11 May 2024
Reliable cage assembly.
Reviewed on the 16 January 2025
Good upgrade path.
The HPE DL180 Gen9 8SFF Hard Drive Cage/Backplane Kit (725572-B21) is an official HPE upgrade component that enables installation of up to eight 2.5-inch small form factor (SFF) SAS or SATA drives in a ProLiant DL180 Gen9 server.
SKU 725572-B21 is fully compatible with HPE ProLiant DL180 Gen9 rack servers and can also be used in select Gen9 platforms that support an 8-bay SFF drive cage.
The kit supports installation of up to eight hot-plug 2.5-inch SFF drives, providing high-density storage capacity within the ProLiant DL180 Gen9 chassis.
The backplane supports both SAS and SATA 2.5-inch hard disk drives and solid-state drives, delivering versatile storage options for diverse workloads.
No. The 725572-B21 backplane is designed for SAS and SATA SFF drives only and does not support NVMe protocol or U.2/U.3 form factor SSDs.
The kit includes the 8-bay drive cage, integrated backplane assembly with SAS data connectors, mounting brackets, and required cabling for ProLiant DL180 Gen9 integration.
Yes. Each SFF drive requires an HPE 2.5-inch drive carrier (caddy) with matching part numbers to ensure secure mounting and connectivity in the backplane.
Yes. The backplane kit features full hot-swap support for SAS and SATA drives, enabling drive insertion and removal without powering down the server.
The backplane connects via two SFF-8087 Mini SAS connectors or an equivalent HPE proprietary SAS connector, providing up to 12 Gb/s per port.
The kit includes necessary internal SAS cables; additional uplink cables may be required depending on your RAID controller or HBA configuration.
Backplane firmware updates are managed through the server’s iLO interface and HPE Service Pack for ProLiant (SPP) to ensure compatibility and reliability.
The cage and backplane are controller-agnostic. For RAID functionality, pair with any compatible HPE Smart Array or third-party 12 Gb/s SAS RAID controller.
With eight 12 Gb/s SAS ports, the backplane delivers high aggregated throughput, optimized for data-intensive applications and virtualization workloads.
Power down the server, remove the front bezel, slide the existing cage out, secure the new 8SFF assembly in place, connect SAS cables to the controller, and reassemble.
HPE covers the kit under its standard limited warranty for ProLiant hardware, offering repair or replacement options for manufacturing defects.
Order SKU 725572-B21 through any authorized HPE reseller or the HPE Parts Store to obtain genuine HPE hardware with full support coverage.