636607-B21 - HP 636607-B21 100GB 3Gb/s SATA 3.5" Enterprise SSD

Name: HP 636607-B21 100GB 3Gb/s SATA 3.5" Enterprise SSD
Brand: HP
SKU: 636607-B21
Price: 168 USD
Availability: InStock

636607-B21 - HP 636607-B21 100GB 3Gb/s SATA 3.5" Enterprise SSD | US IT Hardware

Product overview

The HP 636607-B21 solid state drive is an enterprise-class 100GB SATA solution tailored for HP ProLiant servers. It uses a 3Gb/s SATA II interface and MLC NAND technology to provide consistent performance for operating systems, boot volumes, and frequently accessed application data. With a 3.5-inch large form factor, it integrates seamlessly into LFF drive cages commonly used in rack and tower ProLiant platforms. This drive belongs to HP’s Enterprise Mainstream SSD portfolio, balancing performance, endurance, and cost per gigabyte for general-purpose server workloads. Typical use cases include virtualization hosts, infrastructure services, and departmental applications where fast access times and improved reliability over spinning disks are required but extreme write endurance is not mandatory. The 636607-B21 is referenced in HP ProLiant server documentation as a supported option, simplifying qualification and deployment. Its 3Gb/s link rate and moderate capacity make it well suited for legacy and mid-generation servers that require solid state storage without upgrading backplane or controller capabilities.

100GB capacity for OS and key workloads.
3Gb/s SATA II host interface bandwidth.
3.5-inch LFF form factor for ProLiant.
Enterprise mainstream MLC NAND design.
Optimized for HP ProLiant server bays.
Solid-state reliability over HDDs.

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Featuring

NAND Flash Technology
Manufacturer part #	636607-B21
Brand	HP
Condition	Refurbished
Name	HP 100GB 3G SATA MLC LFF (3.5-inch) Enterprise Mainstream Solid State Drive
Model	636607-B21
Application	Internal storage for HP ProLiant servers, boot and OS volumes, application data
Usage Class	Enterprise Mainstream SSD for ProLiant servers
Product Line	HP Enterprise Mainstream Solid State Drives
Product Type	Internal 3.5-inch enterprise solid state drive
Option Kit Type	HP ProLiant server option part

Compatible systems

The HP 636607-B21 is an enterprise 3.5-inch 3Gb/s SATA SSD intended for HP ProLiant servers with LFF SATA drive bays, such as the ML350 G6 and similar-generation systems. It behaves as a standard SATA block device, making it compatible with typical server operating systems and hypervisors certified on those ProLiant platforms.

HP ProLiant
Model: ML350 G6
Form factor: Tower / Rack-convertible with LFF drive bays
Generation: G6
Listed in HP ProLiant ML350 G6 QuickSpecs as "HP 100GB 3G SATA MLC LFF (3.5-inch) Enterprise Mainstream SSD" with option part number 636607-B21.
HP ProLiant
Model: LFF-based rack and tower servers (G6 era)
Form factor: Rack and tower LFF
Generation: G6 family and similar
Intended for ProLiant platforms supporting 3Gb/s SATA LFF drives; typically used as a supported SSD option in mainstream enterprise configurations.

Best for

Server boot volumes
Deploy as a dedicated boot device for HP ProLiant rack and tower servers to improve startup times and system responsiveness compared to HDDs.
Operating system storage
Host Windows or Linux operating systems in virtualized or bare-metal environments where reliable read performance is required.
Application data volumes

Details

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SATA Enterprise SSDs HP Enterprise SSDs Enterprise SSDs

Drive Bay Compatibility	HP 3.5-inch LFF SATA drive bays

Sequential Read Performance	Up to approximately 257 MiB/s (family spec for 3G SATA SSD)

Sequential Write Performance	Up to approximately 129 MiB/s (family spec for 3G SATA SSD)

Random Read IOPS (reference family data)	Up to around 32,000 IOPS for similar 3G SATA mainstream SSDs

Random Write IOPS (reference family data)	Up to around 6,000 IOPS for similar 3G SATA mainstream SSDs

Capacity	100GB
Sector Size	512-byte logical blocks
Logical Block Size	512 bytes per sector logical format

Power Consumption	Approximately 7W typical during operation

Form Factor	3.5-inch Large Form Factor (LFF)
Form Factor Height	LFF 3.5-inch standard height profile

Operating Temperature Range	0°C to 60°C (operational ambient temperature)

Interface	Serial ATA II (SATA 3Gb/s)
Data Transfer Rate	3 Gbit/s (host interface link speed)
Interface Connector	Standard 3.5-inch SATA data and power connectors

Frequently asked questions

What is the capacity and form factor of the HP 636607-B21 SSD?

The HP 636607-B21 provides 100GB of usable capacity in a 3.5-inch large form factor (LFF) housing. This format is designed to fit standard 3.5-inch ProLiant drive bays, making it suitable for rack and tower servers that use LFF drive cages. The SSD targets boot, OS, and light application workloads.

Which interface and speed does the 636607-B21 support?

This drive uses a SATA II interface operating at 3Gb/s. That link speed aligns with older and mid-generation ProLiant platforms that provide 3Gb/s SATA backplanes and controllers, ensuring full compatibility without requiring newer 6Gb/s infrastructure, while still providing significantly lower latency than mechanical hard drives.

Is the HP 636607-B21 suitable for write-intensive applications?

The 636607-B21 is part of HP’s Enterprise Mainstream SSD line based on MLC NAND, optimized for general-purpose and read-heavy workloads. While it supports enterprise duty cycles, extremely write-intensive applications, such as heavy OLTP databases or logging at very high IOPS, may be better served by higher-endurance SSD tiers.

Which HP ProLiant servers list 636607-B21 as a supported option?

The HP ProLiant ML350 G6 QuickSpecs explicitly list the "HP 100GB 3G SATA MLC LFF (3.5-inch) Enterprise Mainstream" SSD with option part number 636607-B21 as a supported storage option. Similar-generation ProLiant rack and tower systems with 3Gb/s SATA LFF drive bays typically share the same option kit compatibility.

How does the 636607-B21 compare to HP enterprise HDDs in performance?

While precise IOPS figures are not always specified, enterprise SATA SSDs like the 636607-B21 deliver orders of magnitude higher random I/O performance and much lower latency than 7.2K or 10K RPM HDDs. This results in faster boot times, quicker application launches, and more responsive infrastructure services on compatible ProLiant servers.

Does the 636607-B21 require any special controller or firmware?

The SSD is designed to work with standard HP ProLiant SATA or SAS controllers that support SATA devices at 3Gb/s. In most supported servers, it functions as a standard SATA drive with no special firmware beyond typical ProLiant drive and BIOS updates that HP recommends for storage option stability and compatibility.

Is this SSD hot-pluggable in HP ProLiant servers?

In ProLiant servers equipped with hot-plug 3.5-inch SATA drive cages and controllers that support hot-plug operation, the 636607-B21 option kit is generally treated as a hot-plug SSD. Administrators should still follow HP storage procedures and operating system guidelines for safely replacing or adding drives in active systems.

HP 636607-B21 100GB 3Gb/s SATA 3.5" Enterprise SSD

Product overview

Featuring

Compatible systems

Best for

Details

Shipping, warranty & returns

Customer reviews

Storage

Power Consumption

Physical Characteristics

Environmental

Interface/Ports

Frequently asked questions

HP 636607-B21 100GB 3Gb/s SATA 3.5" Enterprise SSD

Product overview

Featuring

Compatible systems

Best for

Details

Shipping, warranty & returns

Customer reviews

Shop these collections

Storage

Power Consumption

Physical Characteristics

Environmental

Interface/Ports

Frequently asked questions