636595-B21 - HP Enterprise Mainstream SSD 200GB SATA/300 (SATA 3Gb/s) 2.5" SFF (Small Form Factor) SSD

Name: 636595-B21 - HP Enterprise Mainstream SSD 200GB SATA/300 (SATA 3Gb/s) 2.5" SFF (Small Form Factor) SSD
Brand: HP
SKU: 636595-B21
Price: 228 USD
Availability: InStock

636595-B21 - HP Enterprise Mainstream SSD 200GB SATA/300 (SATA 3Gb/s) 2.5" SFF (Small Form Factor) SSD | US IT Hardware

Product overview

The HP 636595-B21 is a 200GB enterprise-class solid-state drive engineered for HPE ProLiant server environments spanning generations 3 through 7. This 2.5-inch SFF drive delivers reliable performance with a 3Gb/s SATA interface and Multi-Level Cell (MLC) NAND flash memory optimized for MidLine workloads. Supporting hot-swap functionality, the drive enables seamless maintenance and upgrades without server downtime. The Enterprise Mainstream classification positions this SSD as a balanced solution for general-purpose server storage, offering improved speed and reliability compared to traditional hard drives while maintaining cost-effectiveness. Compatible across multiple ProLiant families including BL, DL, ML, SL, XL, and CL series, this drive integrates seamlessly into diverse data center infrastructures requiring dependable storage for virtualization, database applications, and general enterprise workloads.

200GB capacity with 3Gb/s SATA interface.
2.5-inch SFF form factor fits standard server bays.
Hot-swappable design enables maintenance without downtime.
MLC NAND flash memory optimized for enterprise reliability.
Compatible with HPE ProLiant Gen 3 through Gen 7 servers.
MidLine workload rating balances performance and durability.

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Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Storage Controller Support
Manufacturer part #	636595-B21
Brand	HP
Condition	Refurbished
Model	HP 636595-B21
Product Line	HP Enterprise Mainstream SSD
Product Type	Solid State Drive (SSD)
Hot-Swappable	Yes
Spindle Speed	15K RPM (legacy specification; not applicable to SSDs)
Workload Classification	MidLine (MDL) / Enterprise Mainstream
Operating System Support	Windows Server 2008 R2-2016, Linux (RHEL, CentOS, Ubuntu), VMware vSphere 5.0-6.0, Hyper‑V 2008 R2-2016

Compatible systems

The HP 636595-B21 is fully compatible with HPE ProLiant servers generations 3-7 across BL, DL, and ML families. Direct SATA interface compatibility with existing server backplanes and controllers enables plug-and-play installation. Supported operating systems include Windows Server 2008 R2 through 2016, Linux distributions (RHEL, CentOS, Ubuntu), VMware vSphere 5.0-6.0, and Hyper-V 2008 R2-2016. Older servers may require firmware updates for optimal SSD recognition.

HPE ProLiant BL
Model: BL460c, BL465c, BL620c, BL680c, BL685c
Form factor: 2.5" SFF
Generation: G5, G6, G7
Blade server compatibility varies by model; verify specific generation support.
HPE ProLiant DL
Model: DL120, DL160, DL165, DL170h, DL180, DL320, DL360, DL365, DL380, DL385, DL580, DL585, DL785, DL980
Form factor: 2.5" SFF
Generation: G3, G4, G4p, G5, G6, G7
1U-4U rack servers; generation support varies by model line.
HPE ProLiant ML
Model: ML110, ML350, ML370, ML570
Form factor: 2.5" SFF
Generation: G3, G4, G5, G6, G7
Tower and pedestal servers; ML570 supports G3-G5.

Best for

Data Center Storage
Primary or secondary storage tier in HPE ProLiant server deployments requiring improved I/O performance and reliability over mechanical drives.

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2.5" SATA SSDs SATA Enterprise SSDs HP Enterprise SSDs 2.5-inch Enterprise SSDs

Compatible ProLiant Families	BL (Blade), DL (Rack), ML (Tower), SL (Scalable), XL, CL

Compatible Server Generations	HPE ProLiant Gen 3, Gen 4, Gen 5, Gen 6, Gen 7

Capacity	200GB
Endurance Rating	MLC NAND optimized for enterprise 24/7 operation
NAND Flash Memory Type	Multi‑Level Cell (MLC)

Data Transfer Rate	3Gb/s

Form Factor	2.5" SFF (Small Form Factor)

Data Connector	7‑pin SATA data connector
Interface Type	SATA
Power Connector	15-pin SATA power connector
Interface Standard	SATA/300 (SATA 3Gb/s)

Lifecycle Status	Legacy/End-of-Life (supports Gen 3-7 servers, production ended circa 2015‑2018)

Frequently asked questions

What is the storage capacity and interface speed of the HP 636595-B21?

The HP 636595-B21 provides 200GB of usable storage capacity with a SATA 3Gb/s (SATA/300) interface. This 3Gbps data transfer rate is suitable for general enterprise workloads, though it represents a lower-speed tier compared to modern 6Gbps SATA or SAS interfaces. The MLC NAND flash memory ensures reliable performance for sustained read/write operations in server environments.

Which HPE ProLiant server models support the 636595-B21 SSD?

The 636595-B21 is compatible with HPE ProLiant servers from generation 3 through generation 7, including BL460c, BL465c, BL620c, DL360, DL380, DL385, DL580, DL585, ML110, ML350, ML370, and ML570 series. Specific generation support varies by model; for example, DL360 supports G4p, G5, G6, and G7, while DL120 supports only G7. Consult HPE compatibility matrices for your specific server model.

What are the physical dimensions and form factor of this SSD?

The HP 636595-B21 uses a 2.5-inch Small Form Factor (SFF) design, the standard enterprise server SSD form factor. This compact size fits into dedicated 2.5-inch drive bays in HPE ProLiant servers, enabling high-density storage configurations. The drive supports hot-swap functionality, allowing technicians to replace or upgrade the drive without powering down the server.

What workload classification does the MidLine (MDL) rating indicate?

The MidLine (MDL) workload classification positions the 636595-B21 as a balanced enterprise SSD suitable for general-purpose server storage rather than extreme high-performance or archival use cases. MidLine drives are optimized for moderate I/O workloads typical in virtualization, database, and business application environments. This classification reflects durability and reliability tuning appropriate for 24/7 data center operation.

Is the HP 636595-B21 suitable for replacing mechanical hard drives in production servers?

Yes, the 636595-B21 is designed as a direct replacement for mechanical drives in HPE ProLiant servers. The 2.5-inch SFF form factor and SATA interface match legacy hard drive specifications, enabling straightforward physical and electrical compatibility. Hot-swap support allows replacement without server shutdown. However, verify your specific server model's firmware and BIOS support for SSD operation, as some older Gen 3-4 systems may require updates.

What is the warranty and expected lifespan of this enterprise SSD?

HPE documentation indicates a 3-year limited warranty for the 636595-B21. Enterprise SSDs typically provide 5-7 year operational lifespans under normal data center conditions. MLC NAND technology offers good endurance for mixed read/write workloads. Actual lifespan depends on workload intensity, temperature management, and power cycling frequency. Monitor SMART health metrics to predict end-of-life.

HP Enterprise Mainstream SSD 200GB SATA/300 (SATA 3Gb/s) 2.5" SFF (Small Form Factor) SSD

Product overview

Featuring

Compatible systems

Best for

Details

Shipping, warranty & returns

Customer reviews

Storage

Network & Communication

Physical Characteristics

Interface/Ports

Warranty & Support

Frequently asked questions

HP Enterprise Mainstream SSD 200GB SATA/300 (SATA 3Gb/s) 2.5" SFF (Small Form Factor) SSD

Product overview

Featuring

Compatible systems

Best for

Details

Shipping, warranty & returns

Customer reviews

Shop these collections

Storage

Network & Communication

Physical Characteristics

Interface/Ports

Warranty & Support

Frequently asked questions