HPE P53562-B21 1.8TB SAS 12G 10K 512e Hard Drive

P53562-B21 is the commercial option for an HPE 1.8TB 10K SAS Mission Critical hard drive with 512e formatting and a Basic Carrier. The documented product family is 1.8TB, uses SAS 12Gb/s, and is described as a 2.5-inch SFF 10,000 rpm 512e mission-critical HDD with Basic Carrier. This page focuses on configuration planning, rather than repeating the purchasing description of other numbers in the same family. The option identifies the commercial 1.8TB 10K HDD product and is a useful starting point for planned server storage configurations.

A mission-critical disk option

Mechanical 10K SAS disks can remain appropriate in environments designed around predictable enterprise disk storage, particularly where a like-for-like replacement is preferable to redesigning the array. The part number P53562-B21 should be retained in inventory records alongside the server model and the identity visible on the installed unit. That makes future maintenance more straightforward and helps procurement distinguish a commercial option, a spare, an assembly and a model number.

10K rotational storage in context

The 10,000 rpm rating describes spindle speed, while SAS 12Gb/s describes the interface. Neither figure alone determines application throughput. HPE lists this commercial family as Mission Critical and describes it for demanding data-centre use. In practice, drive selection is a system-level decision: the bay, backplane, controller, firmware qualification and existing RAID design all influence suitability. The most useful product record describes the exact component family rather than only its capacity.

Documented product characteristics

Planning for a compatible replacement

A replacement project is often about preserving a known working configuration. For P53562-B21, the interface and carrier provide useful clues, but the supported HPE server configuration remains the deciding factor. This is particularly important in mixed-generation estates, where two drives may share capacity yet differ in firmware, tray design or controller requirements.

The P18438-B21 listing illustrates a different identifier or storage family; matching the intended server generation is more useful than comparing capacity in isolation. The aim is to choose storage that fits the current platform and the required workload, rather than to change technology during a routine service event.

Storage capacity and array design

Raw capacity is only the starting point for an enterprise storage plan. RAID protection, available drive bays, future expansion and backup requirements influence the usable result. For P53562-B21, recording the installed part and the array to which it belongs is valuable during future repairs. The same record can support stock planning and reduce time spent identifying hardware when a maintenance window is short.

What the interface does and does not tell you

The interface name describes one part of the technology, but it does not identify every compatible server. A drive may be physically similar to another product yet use a different carrier or firmware family. Keeping the full P53562-B21 reference, rather than only a generic capacity description, makes quotations and asset records more useful. It also supports a clearer distinction between an upgrade and a like-for-like replacement.

Choosing capacity for the actual workload

A drive intended for active application data may have different priorities from one used for less frequently accessed information. Capacity, write activity, latency and resilience all matter. An established platform can benefit from retaining a known supported storage family, while a major capacity increase may be better handled as a planned storage refresh. Treating those as separate decisions can make purchasing more predictable.

New and Refurbished stock

A New P53562-B21 can suit planned upgrades, spare holdings and compatible installations where unused stock is preferred. A Refurbished unit can offer a practical option for maintaining a server already using the same storage family. Actual condition, available health information and warranty should be evaluated for the item offered. The original HPE product-family warranty does not automatically describe a reseller-supplied refurbished drive.

Explore related storage references

Related products for storage planning and part-number identification include HPE P54682-001 1.8TB HDD HPE P54565-001 1.8TB HDD HPE P18438-B21 3.84TB SSD HPE P18480-001 3.84TB SSD HPE P18442-004 3.84TB SSD HPE MK003840GYCNQ 3.84TB SSD. Some are alternative identifiers within the same family, while others belong to a different capacity or interface generation. The relationship is useful for identifying components, not a claim that every linked drive is a direct substitute.

Practical use of this part number

The option identifies the commercial 1.8TB 10K HDD product and is a useful starting point for planned server storage configurations. For globally managed server estates, keeping the exact HPE identifier alongside the asset record can simplify future service and purchasing. It also helps teams in different locations understand which component was installed and why it was selected.

Choose the correct HPE storage identity

Euroland IT Store can help source HPE P53562-B21 in New or Refurbished condition where available. Share the relevant server and existing part number when requesting a matching storage component, so the enquiry can be handled against the intended platform.

Frequently Asked Questions About HPE P53562-B21

What does 512e mean on HPE P53562-B21?

512e means the drive exposes 512-byte logical sectors while using larger physical sectors internally. This can help software that expects 512-byte logical blocks, although operating-system and storage-controller support still matter.

When would a 1.8TB 10K SAS HDD be preferred over a SATA SSD?

A 10K SAS HDD can be useful for maintaining an established enterprise SAS array where matching the existing media and platform is important. SSDs generally offer lower access latency, so the right choice depends on the workload and the storage architecture.

Does SAS 12G mean the hard drive transfers data at 12Gb/s continuously?

No. SAS 12Gb/s is the interface signalling rate. A mechanical drive's real throughput is limited by the media and depends on workload, access pattern and controller.

Can P53562-B21 be added to an existing HPE RAID configuration?

It may be suitable for a supported SAS array, but the drive family, sector format, controller and RAID configuration need to align. Raw 1.8TB capacity does not equal the amount of usable RAID storage.

What changes when buying this HDD Refurbished?

Refurbished drives can support established systems, but mechanical wear and operating history matter. Review the offered condition, testing information and warranty for the actual unit.