881457-B21 is the HPE option part number for 2.4TB SAS 12G Enterprise 10K SFF (2.5in) SC 512e Digitally Signed Firmware HDD. It is a hot-swap 2.5-inch small form factor drive on a single SAS 12 Gb/s port, rated at a 1.2 GB/s data transfer rate and a 10,000 rpm spindle speed. The drive uses Advanced Format 512e sectoring and carries digitally signed firmware. The SC carrier drops into 2.5" SFF bays across ProLiant DL, ML, BL and XL platforms from Gen8 through Gen10 Plus v1, as well as Synergy 480 and 660 compute modules, making it a straightforward capacity addition to an existing SAS configuration.
HPE Option Part #: 881457-B21
HPE Spare Part #: 881507-001
HPE Model #: EG002400JWJNN, EG002400JWJNT, EG002400JXLWC
HPE Assembly Part #: 879299-001
PRODUCT SPECIFICATIONS FOR 881457-B21:
- Hard Drive Type: Hot-swap hard drive
- Form Factor: 2.5" SFF
- Form Factor (metric): 6.4 cm SFF
- Form Factor (Short): 2.5"
- Form Factor (Short) (metric): 6.4 cm
- Storage Interface: Serial Attached SCSI 3
- Interface: Serial Attached SCSI 3
- Capacity: 2.4 TB
- Data Transfer Rate: 12 Gb/s
- Spindle Speed: 10000 revolutions per minute
- Features: Advanced format 512e, Digitally Signed Firmware
- Interfaces: 1 x SAS 12 Gb/s
- Compatible Bay: 2.5" SFF
COMPATIBLE WITH:
PROLIANT DL SERIES
PROLIANT ML SERIES
PROLIANT BL SERIES
PROLIANT WS SERIES
PROLIANT SL SERIES
PROLIANT XL SERIES
PROLIANT SYNERGY SERIES
** This list may not be complete. Contact us via Live Chat if you have any questions about compatibility.
FREQUENTLY ASKED QUESTIONS ABOUT 881457-B21
What is the difference between 881457-B21 and 881507-001?
They are the same physical drive under different HPE numbering schemes. 881457-B21, the subject of this page, is the option part number, the orderable configuration number used when buying the drive as a standalone option. 881507-001 is the spare part number used for service replacement. This family also includes one assembly revision and three OEM drive models, all listed in the cross-reference block on this page. An assembly number identifies the drive with its carrier as built; an OEM model number is the drive manufacturer's own designation.
Which servers accept this drive?
It fits 2.5" SFF bays in ProLiant Gen8 systems such as DL360p, DL380p, DL560, DL580, ML350p and ML310e; Gen9 systems including DL360, DL380, DL388, DL560, DL580, ML110, ML150 and ML350; and Gen10 systems including DL325, DL360, DL380, DL385, DL560, DL580, ML110 and ML350, plus DL325 Gen10 Plus v1 and DL385 Gen10 Plus v1. BL blade, WS460c, SL, XL and Synergy 480/660 Gen9 and Gen10 platforms are also supported.
What does 512e Advanced Format mean here?
The drive uses 4K physical sectors internally while presenting 512-byte logical sectors to the host, which is what the 512e designation indicates. This keeps the drive compatible with controllers and operating systems that expect 512-byte logical block addressing. Mixing 512e drives with native 512n drives in the same array is generally avoided, so plan array membership around a consistent sector format.
What is digitally signed firmware and why does it matter?
Digitally signed firmware means the drive firmware image carries a cryptographic signature that the platform validates before the firmware is accepted. This blocks unsigned or altered firmware from being loaded onto the drive. It is a supply chain and firmware integrity control, and it is a listed feature of this drive alongside the Advanced Format 512e sectoring.
What interface and performance does it deliver?
The drive presents one SAS 12 Gb/s port, using Serial Attached SCSI 3, with a rated data transfer rate of 1.2 GB/s. Spindle speed is 10,000 rpm, placing it in the enterprise performance tier rather than the 7.2K midline tier. Capacity is 2.4 TB. It is hot-swap capable in supported SFF bays, so it can be inserted or removed without powering down the server.
HPE PARTSURFER INFO FOR 881457-B21
| Spare PN | Description | |
|---|---|---|
 | 881507-001 | 2.4TB SAS hot-plug hard drive - 10,000 RPM, 2.5-inch small form factor (SFF), 12 Gb/s interface, smart carrier (SC), 512e format, smart carrier (SC), Digitally Signed Firmware |
Last Updated: 2026-09-02
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- Digitally Signed Firmware
- Yes
- Estimated Release
- 2017
- Form Factor
- SFF (2.5 inch)
- Form Factor/Carrier Type
- SFF / Smart Carrier (SC)
- HDD Data Transfer Rate
- 12 Gb/sec (12G)
- HDD Performance Level
- Enterprise (ENT)
- HDD Rotational Speed
- 10,000 rpm (10K)
- HDD Storage Capacity
- 2.4 TB
- Hotplug Carrier Type
- Smart Carrier (SC)
- Interface
- SAS
9 Reviews
This product is warrantied against hardware failure for a period of 3 Years from the date of purchase. Before making a purchase, please take a moment to review our return policy below.
Returns
It is the customer's responsibility to verify compatibility with their machine(s) before placing an order. If an item is ordered by mistake, it can be returned for refund, minus a 25% restocking fee, within 5 business days of receipt. The cost of freight is not refundable.
Please be aware that factory-sealed equipment can only be returned if it remains unopened.
Defective Products
If you have received a defective part and your machine is still within the HPE warranty period, please initiate a warranty exchange by visiting the HPE Enterprise Support Center. Be sure to have the serial numbers of the defective drive and your server/storage array handy.
In case your hardware becomes defective during the Global One warranty period, but the HPE warranty has expired, you can return the product to us for a working replacement. You are responsible for the shipment of returned merchandise. However, we will cover the expense of Ground /Economy shipment for the replacement item(s).
Requesting an RMA
To initiate a return or warranty claim, please complete and submit the RMA Request Form.
