872745-001 is the HPE spare part number for 4TB SAS 12G Midline 7.2K LFF (3.5in) SC Digitally Signed Firmware HDD. This is the number HPE service documentation, iLO event logs, and the drive label itself use to identify the failed unit, so if you pulled it from a chassis or read it from a log entry, this is the correct replacement reference. The drive is a 4TB 7,200 rpm midline SAS unit with a 12 Gb/s interface, 512 bytes per sector, in a 3.5-inch large form factor hot-swap carrier. It ships mounted in an HPE Smart Carrier for tool-free installation into an LFF bay.
HPE Option Part #: 872487-B21
HPE Spare Part #: 872745-001
HPE Model #: MB004000JWFVH, MB004000JWFVP, MB004000JWKGU, MB004000JWWQB, MB004000JWZVU, MB004000JYDPB, MB4000JVYZQ
HPE Assembly Part #: 872493-003
PRODUCT SPECIFICATIONS FOR 872745-001:
- Brand: HPE
- Product Line: HPE Business Critical
- Bytes per Sector: 512
- Data Transfer Rate (Hard Drive): 12 Gb/s
- Form Factor (Short): 3.5
- Form Factor (Short) (metric): 8.9 cm
- Hard Drive Capacity: 4 TB
- Hard Drive Type: Hot-swap hard drive
- HD Interface: Serial Attached SCSI 3
- Spindle Speed (rpm): 7200 revolutions per minute
- Storage Interface: Serial Attached SCSI 3
- Interface Provided: 1 x SAS 12 Gb/s
- Compatible Bay: 3.5" LFF
- Hard Drive Form Factor: 3.5" LFF
- Hard Drive Form Factor (metric): 8.9 cm LFF
- Bundled With: HPE Smart Carrier
- Product Type: Hard drive
COMPATIBLE WITH:
PROLIANT DL SERIES
PROLIANT ML SERIES
PROLIANT SL SERIES
** This list may not be complete. Contact us via Live Chat if you have any questions about compatibility.
FREQUENTLY ASKED QUESTIONS ABOUT 872745-001
What is the difference between 872745-001 and 872487-B21?
They are the same physical drive under different HPE numbering schemes. 872745-001, the number on this page, is the spare part number, which is what appears in service documentation, iLO logs, and on the drive label. 872487-B21 is the option kit number used when the drive is ordered as a standalone sales item. This family also includes one assembly revision and seven OEM drive models, all listed in the cross-reference block on this page. An assembly number identifies a specific build revision of the finished drive and carrier. An OEM model number is the manufacturer's own designation for the bare drive mechanism inside.
What arrives in the box?
The drive is supplied mounted in an HPE Smart Carrier, the standard hot-swap carrier for 3.5-inch LFF bays. That means it drops directly into an empty or vacated LFF bay without transferring hardware from the failed unit. The drive carries digitally signed firmware, which HPE Gen10 platforms check during initialization. Mounting screws, cables, and drive blanks are not part of this part number.
Which servers accept this drive?
This drive is listed for ProLiant DL60 Gen9, DL80 Gen9, DL120 Gen9, DL160 Gen9, DL180 Gen9, DL320e Gen8 v2, DL360e Gen8, DL360p Gen8, DL360 Gen9, DL360 Gen10, DL380e Gen8, DL380p Gen8, DL380 Gen9, DL380 Gen10, DL388 Gen9, ML150 Gen9, ML310e Gen8 v2, ML350p Gen8, ML350 Gen9, SL4540 Gen8, and SL4545 G7. The receiving bay must be a 3.5-inch LFF bay with a SAS backplane.
What are the performance characteristics of this drive?
It is a 4TB midline drive spinning at 7,200 rpm with a Serial Attached SCSI 3 interface rated at 12 Gb/s. Sector format is 512 bytes. Midline SAS positions it for capacity-oriented workloads such as bulk storage, backup targets, and archival volumes rather than transaction-heavy random I/O, where higher spindle speeds or solid state would be the appropriate choice.
Can I mix this drive with the existing drives in an array?
For predictable rebuild behavior, replace a failed member with a drive of the same capacity, spindle speed, form factor, and interface. This unit is 4TB, 7,200 rpm, 3.5-inch LFF, SAS at 12 Gb/s. It negotiates down on 6 Gb/s SAS backplanes, so the link rate is governed by the controller and backplane in the host system. Confirm the array's existing member specifications before inserting the replacement.
HPE PARTSURFER INFO FOR 872745-001 (872487-B21)
| Spare PN | Description | |
|---|---|---|
 | 872745-001 | 4TB hard disk drive - SAS interface, 12Gb/s interface, 3.5-inch large form factor (LFF), 7,200 RPM, smart carrier (SC), dual port (DP), digitally signed firmware |
Last Updated: 2026-08-07
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- HDD Performance Level
- Midline (MDL)
- HDD Data Transfer Rate
- 12 Gb/sec (12G)
- HDD Rotational Speed
- 7,200 rpm (7.2K)
- Bare HDD Variation (tray type)
- Smart Carrier (SC)
- HDD Storage Capacity
- 4 TB
- Form Factor
- LFF (3.5 inch)
- Interface
- SAS
- Digitally Signed Firmware
- Yes
- Estimated Release
- 2017
This product is warrantied against hardware failure for a period of 1 Year 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.
