• Black hp enterprise 15.36tb nvme gen5 edsff e3.s ssd with textured edge and red indicator light model p78921-b21
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HPE

HPE P78921-B21 | 15.36TB NVMe Gen5 Read Intensive EDSFF E3.S SSD, PM9D3a

HPE P78921-B21 | 15.36TB NVMe Gen5 Read Intensive EDSFF E3.S SSD, PM9D3a

P78921-B21

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Description

The HPE 15.36TB NVMe Gen5 EDSFF E3.S SSD (PM9D3a) delivers high-density, high-bandwidth solid-state storage for read-intensive server workloads including read caching, web serving, and boot/swap operations. Built on PCIe Gen5 NVMe and the EDSFF E3.S EC1 form factor, it enables up to 20 drives in 1U or 36 drives in 2U HPE ProLiant Gen12 servers — a dramatic density advantage over traditional 2.5-inch SFF SSDs. SPDM support adds hardware-level drive security, while full data-path error detection ensures integrity under sustained read loads.

Designed exclusively for HPE Gen12 server platforms, this mainstream performance SSD is hot-plug capable and optimised for deployments where read IOPS, low latency, and storage density are critical priorities. It is part of HPE's PM9D3a EDSFF family, available from 1.92TB through 30.72TB to match varying capacity requirements. Order direct from iptrading.com.au — Australian-owned and operated since 2001.

Features

- PCIe Gen5 NVMe interface delivers maximum I/O bandwidth — exclusive to EDSFF E3.S drives in HPE Gen12 servers
- EDSFF E3.S EC1 form factor enables up to 20 drives per 1U or 36 per 2U for exceptional storage density
- SPDM (Security Protocol and Data Model) support for hardware-level drive authentication and security
- Full data-path error detection ensures data accuracy and integrity across sustained read workloads
- Improved power management and thermal design for better system-level efficiency
- Hot-plug capable in supported HPE ProLiant Gen12 server platforms
- Optimised for read-intensive workloads: read caching, web servers, and boot/swap
- Available in five capacities (1.92TB to 30.72TB) within the PM9D3a EDSFF family

Warranty

Hewlett Packard Enterprise (HPE) offers a standard limited hardware warranty on its products, with coverage periods varying by product line. For instance, HPE ProLiant servers typically come with a 1 to 3-year limited warranty, while other products may have different durations.
Extended Warranty Options via IP Trading:
IP Trading offers tailored extended warranty solutions and support packages for HPE products, ensuring your IT infrastructure remains protected beyond the standard warranty period. Contact our team to explore options that align with your organisation's needs.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

- Capacity: 15.36 TB
- Interface: PCIe Gen5 NVMe
- Form Factor: EDSFF E3.S EC1 (E3S)
- Controller: Samsung PM9D3a
- Workload Type: Read Intensive (RI)
- Performance Tier: Mainstream Performance
- Security: SPDM (Security Protocol and Data Model)
- Drive Density: Up to 20 E3.S drives per 1U / 36 E3.S drives per 2U HPE Gen12 server
- Hot-Plug: Yes (in supported HPE ProLiant Gen12 servers)
- Part Number: P78921-B21

FAQs

Q: What servers are compatible with the HPE P78921-B21 EDSFF E3.S SSD?
A: This SSD is designed for HPE ProLiant Gen12 servers that support the EDSFF E3.S backplane. It is not compatible with earlier Gen10 or Gen11 servers using traditional 2.5-inch SFF drive bays. Always verify backplane and firmware compatibility with HPE's Proliant server documentation before deployment.

Q: What workloads is the 15.36TB PM9D3a SSD best suited for?
A: This drive is classified as Read Intensive (RI) and is optimised for workloads with predominantly read operations — including read caching, web server hosting, database reads, and operating system boot/swap. It is not designed for write-heavy workloads, which require Mixed Use or Write Intensive class drives.

Q: What is the advantage of the EDSFF E3.S form factor over traditional 2.5-inch SSDs?
A: EDSFF E3.S enables significantly higher drive density — up to 20 drives in a 1U chassis or 36 in a 2U chassis — compared to standard 2.5-inch SFF configurations. It also supports PCIe Gen5 bandwidth, which is not available with legacy SFF drive slots, and provides improved thermal and power management.

Q: What does SPDM support mean for this SSD?
A: SPDM (Security Protocol and Data Model) allows the host server to cryptographically authenticate the drive's identity and firmware integrity. This hardware-level security feature helps protect against supply chain attacks and ensures only legitimate, validated storage devices are operating in the server.

Q: Can I purchase this HPE SSD in Australia through IP Trading?
A: Yes. IP Trading (iptrading.com.au) is an Australian-owned and operated IT hardware reseller with over 20 years of experience supplying HPE server components. You can order the P78921-B21 directly through the website or contact the team for volume pricing and availability.

Q: What other capacities are available in the HPE PM9D3a EDSFF E3.S SSD family?
A: The PM9D3a family includes 1.92TB, 3.84TB, 7.68TB, 15.36TB, and 30.72TB variants — all sharing the same EDSFF E3.S EC1 form factor, PCIe Gen5 NVMe interface, and Read Intensive performance classification. Choose the capacity that matches your storage density and budget requirements.

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