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Home / HP / Solid State Drives / HP 691856-B21

HP 691856-B21 400GB SATA 6Gb/s 3.5" LFF SC MLC SSD

Part Number: 691856-B21     Brand: HP
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691856-B21 Price

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$514.00 $521.40
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Condition
Quantity

HP 691856-B21 Specs

▲
Brand
HP
Capacity
400GB
Hot-Swappable
Yes
Carrier Type
Smart Carrier (SC)
Interface Type
SATA
Data Transfer Rate
6Gb/s
Workload
Write Intensive (WI)
NAND Flash Memory Type
Multi-Level Cell (MLC)
Form Factor
3.5" LFF
HPE Server Generations
Gen 9/Gen 8/Gen 7/Gen 5

This HP Solid State Drive 691856-B21 is compatible with these HP Servers

▲
ProLiant ML350e
Proliant BL460c
Proliant DL120
Proliant DL160
Proliant DL180
Proliant DL20
Proliant DL320e
Proliant DL360
Proliant DL380
Proliant DL385
Proliant DL388
Proliant DL60
Proliant DL80
Proliant ML110
Proliant ML150
Proliant ML30
Proliant ML310
Proliant ML350
Proliant ML350e
Proliant SL4540
Proliant SL4545

HP 691856-B21 Description

▼

The HP 691856-B21 400GB SATA 6Gb/s 3.5" LFF SC MLC SSD is a high-performance solid-state drive designed to enhance storage capabilities in a variety of HPE ProLiant servers. Ideal for data centers and enterprise environments, this SSD supports fast data access and reliable storage for applications requiring write-intensive workloads. Compatible with multiple HPE ProLiant server models including ProLiant DX, DL, ML, SL, BL, XL, and CL series, it ensures seamless integration across generations 5, 7, 8, and 9, making it a versatile solution for upgrading or expanding your server storage infrastructure.

This SSD stands out with its robust specifications tailored for demanding environments. It features a 400GB capacity with a 3.5" Large Form Factor (LFF) and utilizes Multi-Level Cell (MLC) NAND flash memory, which balances performance and endurance. The SATA interface supports a data transfer rate of up to 6Gb/s, and the drive is hot-swappable, allowing for easy maintenance and replacement without downtime. The Smart Carrier (SC) design simplifies installation and management within compatible HPE servers.

  • Brand: HP
  • Capacity: 400GB
  • Hot-Swappable: Yes
  • Carrier Type: Smart Carrier (SC)
  • Interface Type: SATA
  • Data Transfer Rate: 6Gb/s
  • Workload: Write Intensive (WI)
  • NAND Flash Memory Type: Multi-Level Cell (MLC)
  • Form Factor: 3.5" Large Form Factor (LFF)
  • Compatible HPE Server Generations: Gen 5, Gen 7, Gen 8, Gen 9

For maintenance and replacement, the following spare part numbers are compatible with this SSD:

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ⓘ We found 9 subs for the HP 691856-B21
100% Match
HP 692162-001 400GB SATA 6Gb/s 3.5" LFF SC MLC SSD
✓ Capacity: 400GB
✓ Interface: SATA
✓ Form Factor: 3.5" LFF
✓ Brand: HP
✓ Workload: MidLine (MDL)
✓ NAND Flash Memory Type: Multi-Level Cell (MLC)
✓ Hot-Swappable: Yes
✓ Data Transfer Rate: 6Gb/s
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HP 804668-B21 400GB SATA 6Gb/s 3.5" LFF Write Intensive SC MLC SSD
✓ Capacity: 400GB
✓ Interface: SATA
✓ Form Factor: 3.5" LFF
✓ Brand: HP
✓ Workload: Write Intensive (WI)
✓ NAND Flash Memory Type: Multi-Level Cell (MLC)
✓ Hot-Swappable: Yes
✓ Data Transfer Rate: 6Gb/s
100% Match
HP 864132-001 400GB SATA 6Gb/s 3.5" LFF Write Intensive SC SSD
✓ Capacity: 400GB
✓ Interface: SATA
✓ Form Factor: 3.5" LFF
✓ Brand: HP
✓ Workload: Write Intensive (WI)
✓ NAND Flash Memory Type: Multi-Level Cell (MLC)
✓ Hot-Swappable: Yes
✓ Data Transfer Rate: 6Gb/s
100% Match
HP 804668-S21 400GB SATA 6Gb/s 3.5" LFF Write Intensive SC MLC SSD
✓ Capacity: 400GB
✓ Interface: SATA
✓ Form Factor: 3.5" LFF
✓ Brand: HP
✓ Workload: Write Intensive (WI)
✓ NAND Flash Memory Type: Multi-Level Cell (MLC)
✓ Hot-Swappable: Yes
✓ Data Transfer Rate: 6Gb/s
98% Match
HP 805388-001 400GB SATA 6Gb/s 3.5" LFF Write Intensive SC SSD
✓ Capacity: 400GB
✓ Interface: SATA
✓ Form Factor: 3.5" LFF
✓ Brand: HP
✓ Workload: Write Intensive (WI)
✓ NAND Flash Memory Type: Multi-Level Cell (MLC)
✓ Hot-Swappable: Yes
✓ Data Transfer Rate: 6Gb/s
+ Encryption: Digitally Signed (DS)
87% Match
HP 691025-001 200GB SAS 6Gb/s 2.5" SFF SC MLC SSD
✓ Capacity: 200GB
✓ Interface: SAS
✓ Form Factor: 2.5" SFF
✓ Brand: HP
✕ Workload: Write Intensive (WI)
✓ NAND Flash Memory Type: Multi-Level Cell (MLC)
✓ Hot-Swappable: Yes
✓ Data Transfer Rate: 6Gb/s
75% Match
HP 691845-001 400GB SATA 6Gb/s 2.5" SFF MLC SSD
✓ Capacity: 400GB
✓ Interface: SATA
✓ Form Factor: 2.5" SFF
✓ Brand: HP
✕ Workload: Write Intensive (WI)
✓ NAND Flash Memory Type: Multi-Level Cell (MLC)
✕ Hot-Swappable: Yes
✓ Data Transfer Rate: 6Gb/s
75% Match
HP MK0400GCTZA 400GB SATA 6Gb/s 2.5" SFF SC MLC SSD
✓ Capacity: 400GB
✓ Interface: SATA
✓ Form Factor: 2.5" SFF
✓ Brand: HP
✕ Workload: Write Intensive (WI)
✓ NAND Flash Memory Type: Multi-Level Cell (MLC)
✕ Hot-Swappable: Yes
✓ Data Transfer Rate: 6Gb/s
75% Match
HP 691842-003 400GB SATA 6Gb/s 2.5" SFF SC MLC SSD
✓ Capacity: 400GB
✓ Interface: SATA
✓ Form Factor: 2.5" SFF
✓ Brand: HP
✕ Workload: Write Intensive (WI)
✓ NAND Flash Memory Type: Multi-Level Cell (MLC)
✕ Hot-Swappable: Yes
✓ Data Transfer Rate: 6Gb/s

Customer Reviews

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289 reviews
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4
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2
(2)
1
(4)
G
Gary B.
2025-06-12
✓ Verified Buyer
★★★★★
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
★★★★★
Good purchasing experience.
A
Aaron P.
2025-04-04
✓ Verified Buyer
★★★★★
The refurbished drives we ordered were in perfect condition.
M
Mitch F.
2025-04-04
✓ Verified Buyer
★★★★★
BoostHardware always has what I need at reasonable prices.
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David P.
2025-03-28
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Delivered on time.
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Louis J.
2025-03-26
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Found the hard drives I needed. The ordering process was smooth and fast. Got the drives next day.
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Darryl P.
2025-03-25
✓ Verified Buyer
★★★★★
Excellent personal service, thanks Scott!
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Lindsay M.
2025-03-21
✓ Verified Buyer
★★★★★
Good price on the drives we needed.

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