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HGST Ultrastar 4TB 7.2K SAS 3.5" HDD HUS724040ALS640
Inclusive of VAT · Warranty included
HGST
Product Specification
| Manufacturer | HGST |
| Model | HUS724040ALS640 |
| Product Line | Ultrastar |
| Capacity | 4TB |
| Interface | SAS |
| Form Factor | 3.5-inch LFF |
| Drive Type | HDD |
| Rotational Speed | 7200 RPM |
| Hot Swap | Yes |
About This Product
Overview
The HGST Ultrastar HUS724040ALS640 is an enterprise 4TB hard drive built for storage environments that prioritize capacity, compatibility, and predictable operation in server-class hardware. With a 3.5-inch large-form-factor design and SAS connectivity, it is aimed at IT buyers who need a drive that belongs in business storage platforms rather than consumer desktops. The Ultrastar family is widely associated with data center and server deployments, making this model a practical choice for organizations standardizing on SAS-based infrastructure.
Performance & Scalability
At 7,200 RPM, this drive is positioned for balanced enterprise storage use, where steady throughput and broad compatibility are often more important than flash-style latency. The SAS interface supports integration into server backplanes, RAID arrays, and storage shelves that are designed around enterprise disks. For buyers building capacity across multiple bays, the 4TB size helps reduce the number of drives needed to reach a target storage footprint, which can simplify array planning and enclosure utilization.
Deployment Scenarios
This model is commonly suited to rack servers, storage arrays, and hot-plug enclosures that accept 3.5-inch SAS drives. It can be used for general file storage, backup repositories, virtualization datastores, and other workloads where large-capacity spinning media remains a sensible fit. Because it is a hot-plug capable enterprise drive, it aligns well with systems that are designed for serviceability and drive replacement without taking the entire platform offline.
Why Choose This Product?
Buyers often choose this type of drive when they need a known enterprise model that fits established SAS storage ecosystems. The combination of 4TB capacity, 3.5-inch form factor, and Ultrastar positioning makes it useful for expanding existing arrays or replacing like-for-like drives in compatible systems. For IT teams managing mixed storage inventories, exact model identification is especially valuable because it helps maintain consistency across bays, enclosures, and RAID groups.
About this hard drive
HGST Ultrastar HUS724040ALS640 is a 4TB SAS hard drive for capacity-focused server and storage deployments. Tested and stocked in Doha, delivered across Qatar within a day.
The HGST Ultrastar HUS724040ALS640 is a 3.5-inch LFF enterprise hard drive with 4TB capacity, a SAS interface and a 7200 RPM spindle speed. It belongs to the Ultrastar platform and is intended for servers and storage enclosures built for large-form-factor SAS disks. IT teams use this configuration for RAID arrays, shared storage, backup repositories and general server storage where bulk capacity matters more than flash-style latency.
For buyers managing refurbished infrastructure in Doha and across Qatar, the exact model helps distinguish this drive from other Ultrastar capacities and interfaces. SKU HDD-HGST-4TB-7K2-SAS identifies this configuration for procurement. Its hot-plug capability is useful in systems with a suitable SAS backplane, but drive replacement procedures still depend on the host system and the state of its storage array.
- Capacity
- 4TB
- Interface
- SAS
- Speed
- 7200 RPM
- Hot-plug
- Yes
Part numbers and identification
Use the full HGST model when matching an existing drive in a storage group. Capacity and interface alone do not distinguish it from other Ultrastar disks. The SKU identifies this configuration for procurement, while the manufacturer model is the drive identifier to use when comparing installed hardware.
| Manufacturer model | HUS724040ALS640 |
| SKU | HDD-HGST-4TB-7K2-SAS |
Specification
This 4TB HDD combines a 3.5-inch LFF body with SAS connectivity and a 7200 RPM rotational speed. The form factor determines the bay size, while the interface determines the backplane and controller connection. Hot-plug capability applies when the drive is used in a system designed to support it.
| Manufacturer | HGST |
| Product line | Ultrastar |
| Drive type | HDD |
| Capacity | 4TB |
| Interface | SAS |
| Form factor | 3.5-inch LFF |
| Rotational speed | 7200 RPM |
| Hot-plug capable | Yes |
For an existing array, the usable capacity depends on the array layout rather than the capacity of one disk alone. A replacement drive should be assessed against the array's capacity and interface requirements. For expansion, plan around the available LFF bays, SAS connections and the intended storage layout before assigning the drive to a workload.
Installation
Use a 3.5-inch bay with SAS connectivity and a suitable SAS controller. In a hot-plug system, follow the host's storage procedure before removing an active drive, especially if it belongs to a RAID group. Seat the drive using the mounting arrangement required by the chassis, without forcing the SAS connector. After insertion, use the host's storage management interface to identify the drive and assign it to the intended array or storage pool. Hot-plug capability does not make it safe to remove a drive while an array is already handling another disk failure.
In the box
- The part as described, with the part number shown
Images are for illustration. The unit supplied is the one described in the specification and may differ cosmetically.
Not included
- The server or system it installs into
- Mounting hardware, screws or caddies unless listed
- Cables unless listed
Frequently Asked Questions
What type of drive is the HGST HUS724040ALS640?
It is a 4TB enterprise hard disk drive from HGST’s Ultrastar line. The model is a 3.5-inch large-form-factor SAS drive intended for server and storage use, rather than desktop consumer systems. Buyers typically use it in environments where capacity, compatibility, and hot-plug support are important.
Does this drive use SAS or SATA?
This model uses a SAS interface. That makes it suitable for systems, backplanes, and storage enclosures built around SAS disks. It is not described as a SATA drive, so it should be matched to SAS-capable hardware and controllers that support this interface type.
What size and form factor is this hard drive?
The drive is a 3.5-inch LFF model with 4TB of capacity. That combination is common in enterprise servers and storage shelves that accept large-form-factor disks. The larger physical size is often used where bay density and bulk capacity are more important than compact drive dimensions.
Is the HUS724040ALS640 a 7200 RPM drive?
Yes, this model is identified as a 7.2K drive, which corresponds to 7200 RPM spindle speed. That makes it a traditional enterprise hard drive suited to general storage workloads, RAID arrays, and capacity-focused deployments where spinning media is still the right fit.
Can this drive be used in hot-swap server bays?
The model is described as hot-plug capable, so it is intended for systems that support drive replacement in active bays. In practice, that means it is a good match for enterprise servers and storage enclosures with hot-swap backplanes designed for SAS hard drives.
What kind of systems is this Ultrastar drive used in?
This drive is used in enterprise servers, RAID arrays, and storage enclosures that accept 3.5-inch SAS hard drives. It is especially relevant in infrastructure built around HGST Ultrastar-class storage, where exact model matching can help maintain consistency across drive groups and replacement parts.
Why buy refurbished?
Enterprise-grade performance at a fraction of the price of new.
Fully tested and verified
Every unit goes through hardware diagnostics before dispatch: POST tests, burn-in, memory checks and power supply verification.
Enterprise performance for less
Refurbished units deliver the same hardware capability as new, at significantly lower upfront cost, freeing budget for CPUs, memory and storage.
Available now
New enterprise hardware carries lead times of weeks or months. Our stock is held in Doha and ready to ship within 24 hours.
Backed by support
Warranty on every unit we sell, with installation and ongoing hardware support available across Qatar.