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Home / HP / Hard Drives / HP 861756-B21

HP 861756-B21 4TB MidLine SAS 12Gb/s 3.5" LFF 7.2K SC DS 512e HDD

Part Number: 861756-B21     Brand: HP
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Condition
Quantity

HP 861756-B21 Product Specs

▲
Brand
HP
Capacity
4TB
Hot-Swappable
Yes
Spindle Speed
7.2K
Carrier Type
Smart Carrier (SC)
Interface Type
SAS
Data Transfer Rate
12Gb/s
Workload
MidLine (MDL)
Encryption
Digitally Signed (DS)
Sector Size
512e
Cache
64MB
Form Factor
3.5" LFF
HPE Server Generations
Gen 9/Gen 8/Gen 10

This HP Hard Drive 861756-B21 is compatible with these HP Servers

▲
ProLiant DL20
ProLiant DL320
ProLiant DL325
ProLiant DL345
ProLiant DL360
ProLiant DL380
ProLiant DL385
ProLiant DL388
Proliant BL460c
Proliant DL120
Proliant DL160
Proliant DL180
Proliant DL20
Proliant DL380
Proliant DL385
Proliant DL388
Proliant DL60
Proliant DL80
Proliant ML110
Proliant ML150
Proliant ML30
Proliant ML310
Proliant ML350
Proliant ML350e
Proliant XL170r
Proliant XL190r

HP 861756-B21 Description

▼

The HP 861756-B21 4TB MidLine SAS 12Gb/s 3.5" LFF 7.2K SC DS 512e HDD is a reliable and high-capacity hard drive designed for enterprise storage solutions. Ideal for data centers and servers, this drive is compatible with a wide range of HPE ProLiant server models including ProLiant DX, DL, ML, SL, BL, XL, and CL series. Whether you need to expand your storage capacity or replace an existing drive, this 4TB MidLine SAS HDD offers robust performance and seamless integration with Gen 8, Gen 9, and Gen 10 HPE servers.

This hard drive is engineered to deliver efficient data storage with a spindle speed of 7,200 RPM and a high data transfer rate of 12Gb/s via its SAS interface. It features a 3.5-inch Large Form Factor (LFF) with a Smart Carrier (SC) for easy installation and hot-swappable capability, ensuring minimal downtime during maintenance. The drive supports 512e sector size and includes a 64MB cache for enhanced performance. Additionally, it is digitally signed (DS) for encryption, adding a layer of security to your data.

Key specifications of the HP 861756-B21 4TB MidLine SAS HDD include:

  • Brand: HP
  • Capacity: 4TB
  • Hot-Swappable: Yes
  • Spindle Speed: 7,200 RPM
  • Carrier Type: Smart Carrier (SC)
  • Interface Type: SAS (Serial Attached SCSI)
  • Data Transfer Rate: 12Gb/s
  • Workload: MidLine (MDL), suitable for moderate workloads
  • Encryption: Digitally Signed (DS)
  • Sector Size: 512e (512-byte emulation)
  • Cache: 64MB
  • Form Factor: 3.5" Large Form Factor (LFF)
  • Compatible Server Generations: HPE Gen 8, Gen 9, Gen 10

For maintenance and replacement purposes, the following spare part numbers are associated with this hard drive:

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ⓘ We found 11 subs for the HP 861756-B21
100% Match
HP 862141-001 4TB MidLine SAS 12Gb/s 3.5" LFF 7.2K SC DS 512e HDD
✓ Spindle Speed: 7.2K
✓ Capacity: 4TB
✓ Interface: SAS
✓ Form Factor: 3.5" LFF
✓ Cache: 128MB
✓ Brand: HP
✓ Workload: MidLine (MDL)
✓ Hot-Swappable: Yes
✓ Data Transfer Rate: 12Gb/s
✓ Encryption: Digitally Signed (DS)
✓ Sector Size: 512e
100% Match
HP 862137-001 4TB MidLine SAS 12Gb/s 3.5" LFF 7.2K LPC DS 512e HDD
✓ Spindle Speed: 7.2K
✓ Capacity: 4TB
✓ Interface: SAS
✓ Form Factor: 3.5" LFF
✓ Cache: 128MB
✓ Brand: HP
✓ Workload: MidLine (MDL)
✓ Hot-Swappable: Yes
✓ Data Transfer Rate: 12Gb/s
✓ Encryption: Digitally Signed (DS)
✓ Sector Size: 512e
100% Match
HP Exos 861756-S21 4TB MidLine SAS 12Gb/s 3.5" LFF 7.2K SC DS 512e HDD
✓ Spindle Speed: 7.2K
✓ Capacity: 4TB
✓ Interface: SAS
✓ Form Factor: 3.5" LFF
✓ Cache: 128MB
✓ Brand: HP
✓ Workload: MidLine (MDL)
✓ Hot-Swappable: Yes
✓ Data Transfer Rate: 12Gb/s
✓ Encryption: Digitally Signed (DS)
✓ Sector Size: 512e
90% Match
HP 872290-001 4TB MidLine SAS 12Gb/s 3.5" LFF 7.2K SC DS 512e HDD
✓ Spindle Speed: 7.2K
✓ Capacity: 4TB
✓ Interface: SAS
✓ Form Factor: 3.5" LFF
✓ Brand: HP
✓ Workload: MidLine (MDL)
✓ Hot-Swappable: Yes
✓ Data Transfer Rate: 12Gb/s
✓ Encryption: Digitally Signed (DS)
✓ Sector Size: 512e
✕ Cache: 64MB
90% Match
HP MB4000JVYZC 4TB MidLine SAS 12Gb/s 3.5" LFF 7.2K SC DS 512e HDD
✓ Spindle Speed: 7.2K
✓ Capacity: 4TB
✓ Interface: SAS
✓ Form Factor: 3.5" LFF
✓ Brand: HP
✓ Workload: MidLine (MDL)
✓ Hot-Swappable: Yes
✓ Data Transfer Rate: 12Gb/s
✓ Encryption: Digitally Signed (DS)
✓ Sector Size: 512e
✕ Cache: 64MB
88% Match
HP 872745-001 4TB MidLine SAS 12Gb/s 3.5" LFF 7.2K SC DS HDD
✓ Spindle Speed: 7.2K
✓ Capacity: 4TB
✓ Interface: SAS
✓ Form Factor: 3.5" LFF
✓ Brand: HP
✓ Workload: MidLine (MDL)
✓ Hot-Swappable: Yes
✓ Data Transfer Rate: 12Gb/s
✓ Encryption: Digitally Signed (DS)
✓ Sector Size: 512e
+ Dual Port: Yes
✕ Cache: 64MB
88% Match
HP 861748-B21 4TB MidLine SAS 12Gb/s 3.5" LFF 7.2K LPC 512e HDD
✓ Spindle Speed: 7.2K
✓ Capacity: 4TB
✓ Interface: SAS
✓ Form Factor: 3.5" LFF
✓ Brand: HP
✓ Workload: MidLine (MDL)
✓ Hot-Swappable: Yes
✓ Data Transfer Rate: 12Gb/s
✓ Encryption: Digitally Signed (DS)
✓ Sector Size: 512e
+ Dual Port: Yes
✕ Cache: 64MB
81% Match
HP MB004000JWFVK 4TB MidLine SAS 12Gb/s 3.5" LFF 7.2K SC DS 512e HDD
✓ Spindle Speed: 7.2K
✓ Capacity: 4TB
✓ Interface: SAS
✓ Form Factor: 3.5" LFF
✓ Brand: HP
✓ Workload: MidLine (MDL)
✓ Hot-Swappable: Yes
✓ Data Transfer Rate: 12Gb/s
✕ Encryption: Digitally Signed (DS)
✓ Sector Size: 512e
✕ Cache: 64MB
0% Match
0% Match
HP 872352-B21 1.92TB SATA 6Gb/s 2.5" SFF Mixed Use SC MLC DS SSD
✓ Capacity: 1.92TB
✓ Interface: SATA
✓ Form Factor: 2.5" SFF
✓ Brand: HP
✓ Workload: Mixed Use (MU)
✓ NAND Flash Memory Type: Multi-Level Cell (MLC)
✓ Hot-Swappable: Yes
✓ Data Transfer Rate: 6Gb/s
✓ Encryption: Digitally Signed (DS)
0% Match
HP 862974-B21 8GB 2400Mhz 1Rx8 288 Pin ECC DDR4 Memory
✓ Memory Technology: DDR4
✓ Capacity: 8GB
✓ Brand: HP
✓ Voltage: 1.2v
✓ Pins: 288 Pin
✓ ECC: ECC
✓ CAS Latency: CL17
✓ Chipset: 1Rx8
✓ Memory Form Factor: UDIMM
✓ Memory Speed: 2400Mhz
✓ Buffered/Registered: Non

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Gary B.
2025-06-12
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The sales guy at Boost Hardware was super knowledgeable. He helped me find the right part for my older Proliant server.
E
Even P.
2025-04-09
✓ Verified Buyer
★★★★★
We purchased the wrong part by mistake. Boost hardware made it easy to return and quickly issued me a refund.
M
Matthew S.
2025-04-08
✓ Verified Buyer
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Good purchasing experience.
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Aaron P.
2025-04-04
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The refurbished drives we ordered were in perfect condition.
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2025-04-04
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2025-03-26
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2025-03-25
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Lindsay M.
2025-03-21
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Good price on the drives we needed.

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