This item, P70403-B21, is the HPE option part number for the product described as 12.8TB NVMe Gen5 High Performance Mixed Use E3S EC1 PS1030 SSD. Further details below.
The HPE 12.8TB NVMe Gen5 High Performance Mixed Use E3S EC1 PS1030 SSD (P70403-B21) is a genuine HPE drive for mixed read and write workloads on PCIe Gen5 NVMe servers. It ships in the EDSFF E3.S form factor on an HPE E3.S Carrier (EC1) and is hot pluggable, so it can be added or replaced without taking the server down. HPE rates it at up to 14,125 MiB/s sequential read and 8,050 MiB/s sequential write, 268,034 random read and 847,716 random write IOPS at a queue depth of 16, and a peak of 1,218,330 random read IOPS.
Endurance is 3.49 Drive Writes Per Day with 81,526 TB of lifetime writes, which suits balanced read and write work such as databases, virtualization and transaction logging. It draws 4.90 W idle and 23.46 W at most, in a 7.5 mm package. The firmware is digitally signed and HPE lists the drive for Gen11 and Gen12 platforms; the 18 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 #: P70403-B21
HPE Spare Part #: P70495-001
PRODUCT SPECIFICATIONS FOR P70403-B21:
- Product Number: P70403-B21
- Capacity: 12.8TB
- Interface: NVMe (PCIe Gen5)
- Drive form factor: EDSFF E3.S
- Carrier type: E3.S Carrier (EC1)
- Workload: Mixed Use
- 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): 81,526
- Endurance DWPD (Drive Writes Per Day): 3.49
- Max sequential read / write (MiB/s): 14,125 / 8,050
- Random read / write latency (4KiB, Q1, µs): 57 / 12
- Random read / write IOPS (4KiB, Q=16): 268,034 / 847,716
- Max random read / write IOPS (4KiB): 1,218,330@Q256 / 894,439@Q256
- Power idle / max (Watts): 4.90 / 23.46
- Power random read / random write (Watts): 23.42 / 22.93
- Power sequential read / write (Watts): 19.85 / 22.87
- Height: 7.5 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
PROLIANT ML SERIES
** This list may not be complete. Check HPE's QuickSpecs for your server to verify compatibility.
FREQUENTLY ASKED QUESTIONS FOR P70403-B21:
- Which HPE ProLiant servers list P70403-B21?
HPE's server QuickSpecs list P70403-B21 for 18 ProLiant models across Gen11, Gen12 and Gen13, including the DL320 Gen12, DL325 Gen11, DL325 Gen12, DL340 Gen12. The full list is in the Compatible With section of this page. - What endurance and workload is P70403-B21 built for?
P70403-B21 is a mixed use drive rated at 3.49 drive writes per day with 81,526 TB of lifetime writes, per HPE Solid State Disk Drives QuickSpecs (a00001288enw, version 77, 05-October-2026). - What carrier does P70403-B21 use and is it hot pluggable?
P70403-B21 ships in the EDSFF E3.S form factor on an HPE E3.S Carrier (EC1) with a 7.5 mm height. It is hot pluggable, so it can be installed or replaced in a supported server without powering it down.
Last Updated: 2026-10-21
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- Form Factor/Carrier Type
- EDSFF / E3.S Carrier
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.
