This item, P78808-B21, is the HPE option part number for the product described as 7.68TB NVMe Gen4 High Performance Read Intensive SFF BC U.3 Static PM1753 SSD. Further details below.
The HPE 7.68TB NVMe Gen4 High Performance Read Intensive SFF BC U.3 Static PM1753 SSD (P78808-B21) is a genuine HPE drive for read-heavy workloads on PCIe Gen4 NVMe servers. It ships in the SFF (2.5-inch) form factor on an HPE Basic Carrier (BC) and is hot pluggable, so it can be added or replaced without taking the server down. HPE rates it at up to 7100 MiB/s sequential read and 6900 MiB/s sequential write, 260,900 random read and 601,000 random write IOPS at a queue depth of 16, and a peak of 1,762,900 random read IOPS.
Endurance is 1.0 Drive Writes Per Day with 14,016 TB of lifetime writes, which suits read-heavy work such as databases, virtualization, analytics and content delivery. It draws 3.00 W idle and 18.93 W at most, in a 15 mm package. The firmware is digitally signed and HPE lists the drive for Gen11 and Gen12 platforms; the 11 ProLiant models in the Compatible With section below carry it in their QuickSpecs. Every part ships tested or factory sealed and is backed by a 3-year replacement warranty.
HPE Option Part #: P78808-B21
HPE Spare Part #: P78816-001
PRODUCT SPECIFICATIONS FOR P78808-B21:
- Product Number: P78808-B21
- Capacity: 7.68TB
- Interface: NVMe (PCIe Gen4)
- Drive form factor: SFF (2.5-inch)
- Carrier type: Basic Carrier (BC)
- Workload: Read Intensive
- Performance class: High Performance
- Plug type: Hot pluggable
- NAND type: TLC
- Port: Single
- Digitally signed firmware: Yes
- Server generations supported (QuickSpecs): Gen11, 12
- Lifetime writes (TB): 14,016
- Endurance DWPD (Drive Writes Per Day): 1.0
- Max sequential read / write (MiB/s): 7100 / 6900
- Random read / write latency (4KiB, Q1, µs): 59 / 7
- Random read / write IOPS (4KiB, Q=16): 260,900 / 601,000
- Max random read / write IOPS (4KiB): 1,762,900@256 / 602,200@16
- Power idle / max (Watts): 3.00 / 18.93
- Power random read / random write (Watts): 11.64 / 18.57
- Power sequential read / write (Watts): 9.58 / 13.72
- Height: 15 mm
- Weight: 1.00 lb
- Warranty: HPE Solid State Drives and Add-In Cards have a standard 3/0/0 warranty; Customer Self Repair (CSR) subject to maximum usage limitations.
COMPATIBLE WITH:
PROLIANT DL SERIES
** This list may not be complete. Check HPE's QuickSpecs for your server to verify compatibility.
FREQUENTLY ASKED QUESTIONS FOR P78808-B21:
- Which HPE ProLiant servers list P78808-B21?
HPE's server QuickSpecs list this drive for 11 ProLiant models across Gen11 and Gen12, including the DL20 Gen11, DL325 Gen11, DL325 Gen12 and DL345 Gen11. The full list is in the Compatible With section of this page. - What endurance and workload is P78808-B21 built for?
This is a read intensive drive rated at 1.0 drive writes per day with 14,016 TB of lifetime writes, per HPE Solid State Disk Drives QuickSpecs (a00001288enw, version 77, 05-October-2026), page 39. - What carrier does P78808-B21 use and is it hot pluggable?
P78808-B21 ships in the SFF (2.5-inch) form factor on an HPE Basic Carrier (BC) with a 15 mm height. It is hot pluggable, so it can be installed or replaced in a supported server without powering it down.
Last Updated: 2026-10-20
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- Form Factor/Carrier Type
- SFF / Basic Carrier (BC)
This product is warrantied against hardware failure for a period of 3 Years from the date of purchase. Before making a purchase, please take a moment to review our return policy below.
Returns
It is the customer's responsibility to verify compatibility with their machine(s) before placing an order. If an item is ordered by mistake, it can be returned for refund, minus a 25% restocking fee, within 5 business days of receipt. The cost of freight is not refundable.
Please be aware that factory-sealed equipment can only be returned if it remains unopened.
Defective Products
If you have received a defective part and your machine is still within the HPE warranty period, please initiate a warranty exchange by visiting the HPE Enterprise Support Center. Be sure to have the serial numbers of the defective drive and your server/storage array handy.
In case your hardware becomes defective during the Global One warranty period, but the HPE warranty has expired, you can return the product to us for a working replacement. You are responsible for the shipment of returned merchandise. However, we will cover the expense of Ground /Economy shipment for the replacement item(s).
Requesting an RMA
To initiate a return or warranty claim, please complete and submit the RMA Request Form.
