HPE 6.4TB NVME MU E3S EC1 CM7 SSD - P61195-B21

HPE P61195-B21 6.4TB NVMe Gen5 E3.S Enterprise SSD

Overview

The HPE P61195-B21 is a 6.4TB NVMe Gen5 SSD in the E3.S (EDSFF) form factor, purpose-built for enterprise mixed-use workloads including surveillance, data centers, and high-capacity storage arrays. This model delivers the density and speed required for systems that demand both capacity and performance — think multi-camera NVR systems, enterprise video recording, or storage-intensive server configurations where traditional 2.5-inch drives fall short on per-slot throughput.

The P61195-B21 (often searched as P61195 B21) uses the modern E3.S physical form factor, which packs twice the capacity of comparable U.2 drives into a smaller footprint. That matters when you're building out a 12-or-more-bay SSD array for 24/7 recording — every watt and thermal profile counts in a rack enclosure.

Key Features

• 6.4TB capacity in E3.S form factor: Delivers maximum usable storage density per bay. In a 16-bay surveillance NVR chassis, you're looking at 102TB raw capacity without oversizing the physical footprint — meaningfully different from U.2 alternatives that top out around 7.68TB per drive.
• NVMe Gen5 interface: Theoretical throughput of up to 13,000 MB/s (PCIe 5.0) ensures the drive itself is not the bottleneck for parallel video ingest or analytics workloads. Older NVMe Gen4 drives plateau around 7,400 MB/s; for high-bitrate multi-stream setups, that 75% speed delta is real.
• Mixed-use (MU) classification: This drive handles both read-heavy (playback, analytics review) and write-heavy (continuous recording) workloads without degrading. Unlike write-optimized SSDs, MU drives are binned for balanced random and sequential access — essential when surveillance systems must record and serve video simultaneously.
• E3.S (EDSFF) compliance: Enterprise Data Security SSD Form Factor enables 2.5x the height of U.2, freeing up controller and power delivery space in enterprise storage arrays. HPE and other OEMs use this form factor to simplify thermal management in high-density bays.
• 3-year manufacturer warranty: Standard enterprise warranty covers the drive for 36 months, provided by the manufacturer. This is baseline for datacenter-class SSDs; it gives you a defined replacement window for unexpected failure.
• SPDM and CM7 labeling: SPDM (Secure Protocol and Data Model) indicates the drive supports secure device communication protocols — relevant for high-security deployments where firmware attestation or drive authentication is required. CM7 denotes the specific firmware or controller generation, ensuring you're getting the exact validated build for your array.

Integration & Compatibility

The P61195-B21 is designed for HPE ProLiant servers, Apollo storage arrays, and third-party storage systems that support the E3.S form factor and NVMe protocol. Verify that your target array or server has E3.S M.2 slots (not U.2) and supports NVMe Gen5 negotiation — older controllers may downgrade to Gen4 speeds if they lack full Gen5 implementation. Most modern surveillance NVR appliances and storage arrays built in the last 2–3 years support this form factor; check your system's QuickSpecs or contact your OEM to confirm slot count and thermal limits per bay.

If you're migrating from older U.2 or 2.5-inch SATA drives, plan for a firmware update on the storage controller and a test window — mixing drive generations in the same array can trigger controller firmware compatibility checks.

What's in the Box

No additional documentation was available regarding package contents. Contact the manufacturer or distributor for exact kit contents and any included mounting hardware or documentation.

Frequently Asked Questions

Q: Is the P61195-B21 compatible with my existing HPE ProLiant server?

A: The P61195-B21 requires an E3.S (EDSFF) M.2 slot and NVMe Gen5 support. Check your server's QuickSpecs or BIOS for available slots. Older ProLiant models (pre-2021) may only have U.2 slots, which are not compatible with E3.S drives.

Q: What is the warranty coverage on the P61195-B21?

A: The P61195-B21 is covered by a 3-year manufacturer warranty from the date of shipment, provided by HPE. Coverage includes defective components and workmanship under normal operating conditions.

Q: Can the P61195-B21 be used in surveillance NVR systems?

A: Yes, the mixed-use classification and high capacity make this drive suitable for continuous-recording surveillance applications. Confirm that your NVR storage array supports E3.S form factor and NVMe Gen5 before purchasing.

Q: What is the difference between the P61195-B21 and older U.2 drives?

A: The E3.S form factor provides greater physical density and improved cooling in enterprise arrays. NVMe Gen5 offers significantly higher throughput (up to 13,000 MB/s vs. 7,400 MB/s for Gen4). The P61195-B21 also scales to 6.4TB, whereas most U.2 drives max out below 4TB in the same power envelope.

Q: Does the P61195-B21 support secure device communication or firmware attestation?

A: Yes, the SPDM labeling indicates support for Secure Protocol and Data Model, allowing controller and storage-array software to verify firmware integrity and device identity. This is useful for zero-trust security deployments or regulated environments requiring hardware attestation.

Karl Wilson

The HPE P61195-B21 is built for surveillance and enterprise storage scenarios where you need to pack the most capacity into the fewest bays without sacrificing speed. The 6.4TB capacity in E3.S form factor is the real differentiator here — you're getting roughly 2.5x more storage per slot compared to traditional U.2 drives, and NVMe Gen5 ensures the interface itself won't become the bottleneck when multiple cameras or analytics engines hit the array simultaneously.

Technical Highlights:

• NVMe Gen5 (up to 13,000 MB/s): Gen5 drives are still relatively new; most surveillance arrays from 2018–2021 run Gen4 (7,400 MB/s). If your NVR is pulling 4K feeds at 50+ Mbps from multiple cameras plus serving playback requests at the same time, the extra 75% throughput ceiling matters. You won't hit those speeds on every workload, but you're not throttled by the drive when you do.
• Mixed-Use classification: This is not a write-optimized or read-optimized drive — it's binned for balanced performance across both access patterns. In continuous surveillance, that means the P61195-B21 won't degrade on random writes (recording from multiple cameras) or random reads (live playback or forensic review). A write-optimized drive optimized purely for sequential ingest would actually underperform during playback peaks.
• E3.S form factor with SPDM: The smaller physical footprint frees up cooling space and allows enterprise arrays to support 16+ drive bays in a 2U or 4U chassis. SPDM support adds firmware attestation — valuable if your facility requires zero-trust hardware verification or if you're dealing with classified video feeds.

Deployment Considerations:

• The P61195-B21 requires a modern HPE array or server with E3.S slots. Older ProLiant generations only support U.2 — verify before ordering. A controller firmware update may also be required if you're retrofitting Gen5 into a Gen4-era array.
• At 6.4TB per drive, you can reach 102TB raw capacity in a 16-bay enclosure — but don't assume that's usable. Account for RAID overhead (typically 25–50% depending on your parity scheme) and any reserved space for metadata. A 16-bay RAID6 array nets roughly 50TB usable, not 102TB.

Reach for the P61195-B21 if you're building a consolidated surveillance or analytics appliance where you need to maximize on-premises retention without sprawling into a second chassis, or if you're upgrading an existing HPE storage array to Gen5 and want a future-proof, single-drive-family strategy across your fleet.