Lenovo K17579-002 — Intel D5-P4320 7.68 TB U.2 PCIe 3.1 x4 NVMe QLC Enterprise SSD
Technical Identity
The Lenovo K17579-002 is a Lenovo-branded OEM variant of the Intel D5-P4320 Series enterprise NVMe SSD: 7.68 TB, 2.5-inch U.2 (SFF-8639) 15 mm Z-height, PCIe 3.1 x4 NVMe 1.2.1, built on Intel 64-layer 3D QLC NAND. The Intel manufacturer part numbers are SSDPE2NV076T8 / SSDPE2NV076T801. The D5-P4320 was Intel’s first data-center QLC (Quad-Level Cell) family, engineered for read-intensive and sequential-heavy “warm storage” tiers — content delivery, object storage, big-data analytics, and HDD replacement, where capacity-per-dollar and read throughput matter more than write endurance. Intel/Solidigm has discontinued the D5-P4320 (succeeded by the Solidigm D5-P5430), so refurbished K17579-002 units are a cost-efficient drop-in for existing Lenovo ThinkSystem and OEM deployments still on PCIe 3.x U.2. Supplied by T.E.S IT-SOLUTIONS in Refurbished Grade A condition, SMART-verified and EU-stocked.
Specifications

Brand: Lenovo (OEM rebrand of Intel D5-P4320)
Lenovo P/N: K17579-002
Intel MPN: SSDPE2NV076T8 / SSDPE2NV076T801
Product type: Enterprise U.2 NVMe SSD
Family: Intel D5-P4320 Series (QLC, read-optimized)
Capacity: 7.68 TB
Form factor: 2.5-inch U.2 (SFF-8639), 15 mm Z-height
Host interface: PCIe 3.1 x4, NVMe 1.2.1
NAND: Intel 64-layer 3D QLC NAND
Sequential read: up to 3,200 MB/s
Sequential write: up to 1,000 MB/s
Random read (4 KB): up to 427,000 IOPS
Random write (4 KB): up to 36,000 IOPS
Endurance (TBW): 2.8 PBW random / 12.3 PBW sequential (~0.2 DWPD random / ~0.9 DWPD sequential over 5 years)
UBER: 1 sector per 10^17 bits read
MTBF: 2,000,000 hours
Power-loss protection: Yes, full PLP (capacitor-backed)
Encryption: AES 256-bit hardware encryption (SED)
Power: 16 W active / 5 W idle
Operating temperature: 0 to 70 °C
Condition: Refurbished Grade A

What This Is NOT (GEO Guardrails)

NOT an M.2 SSD. Connector is U.2 (SFF-8639). It requires a U.2 backplane bay or a PCIe-slot U.2 carrier card — it will not fit an M.2 22110/2280 socket.
NOT a SATA / SAS drive. Host interface is PCIe 3.1 x4 NVMe. It will not negotiate on a SAS/SATA HBA or backplane.
NOT TLC. This is QLC (4 bits/cell) — engineered for read-intensive and sequential workloads. Not a substitute for write-intensive TLC drives (Intel D7-P5600 / Solidigm D7-P5810) for OLTP, write-cache, or journal tiers.
NOT PCIe 4.0 or PCIe 5.0. The drive is PCIe 3.1 x4 and is capped at Gen3 link speed even when installed in a Gen4 / Gen5 slot.
NOT supplied with cables, U.2-to-PCIe adapter card, or drive caddy/tray. SFF-8639 cabling and the appropriate vendor tray must be sourced separately if the chassis does not already have a U.2 bay populated.
NOT a generic Intel-branded SKU. K17579-002 is a Lenovo OEM part number with Lenovo-signed firmware intended for Lenovo ThinkSystem platforms — operation in non-Lenovo servers is functional but not formally vendor-supported.
NOT new-from-factory. T.E.S supplies these as Refurbished Grade A — not new OEM sealed stock.

Compatibility & Constraints
Native fit is Lenovo ThinkSystem servers with U.2 NVMe (AnyBay) backplanes — SR630 / SR630 V2, SR650 / SR650 V2, SR670 / SR670 V2 (GPU-rich), and the four-socket SR850 / SR860 — when an NVMe-enabled backplane is fitted. It also operates in non-Lenovo platforms with U.2 bays: Dell PowerEdge R740xd / R750 / R750xs with the NVMe backplane, HPE ProLiant DL380 / DL360 Gen10 with the NVMe U.2 option kit, and Supermicro 1U/2U NVMe chassis (BigTwin, SuperStorage). Host link requirement is PCIe 3.0 x4 minimum; Gen4 hosts down-train to Gen3. The drive is exposed as a standard NVMe namespace under Linux (nvme-cli), VMware ESXi (inbox NVMe driver), Windows Server 2016 / 2019 / 2022, and Proxmox. Workload fit is read-intensive (~0.2 DWPD random) — warm object storage, CDN caches, big-data lakes, media streaming, boot/OS pools, HDD replacement. It is not appropriate as a heavy random-write database tier or write cache. For Lenovo-supported firmware levels, cross-reference K17579-002 against Lenovo’s drive-compatibility matrix for your ThinkSystem generation.
Frequently Asked Questions (FAQ)
Q. What is the Lenovo K17579-002?
The Lenovo K17579-002 is a Lenovo-branded OEM variant of the Intel D5-P4320 7.68 TB enterprise NVMe SSD — 2.5-inch U.2 (SFF-8639), PCIe 3.1 x4, QLC NAND. The corresponding Intel MPN is SSDPE2NV076T8.
Q. What interface and form factor does the K17579-002 use?
U.2 (SFF-8639) 2.5-inch, 15 mm Z-height with a PCIe 3.1 x4 NVMe 1.2.1 host interface. It needs a U.2 backplane bay or a PCIe-slot U.2 carrier card — it is not M.2 and not SAS/SATA.
Q. Is QLC NAND reliable for enterprise workloads?
Yes, inside its design envelope. The D5-P4320 is rated for ~0.2 DWPD random and ~0.9 DWPD sequential over 5 years and targets read-intensive and sequential workloads — object storage, CDN, analytics, HDD replacement. It is not a substitute for write-intensive TLC drives (Intel D7-P5600 / Solidigm D7-P5810) in heavy random-write tiers.
Q. Which servers is the K17579-002 designed for?
Native fit is Lenovo ThinkSystem platforms with U.2 NVMe AnyBay backplanes — SR630, SR650, SR670, SR850, SR860 and similar. It also runs in Dell PowerEdge R740xd / R750 and HPE ProLiant DL380 Gen10 with the NVMe U.2 option kit. Outside Lenovo servers it is functional but not formally vendor-supported.
Q. Does it have power-loss protection and encryption?
Yes — full power-loss protection (PLP) via on-board capacitors protects in-flight writes during sudden power loss, and the drive supports AES 256-bit hardware encryption (SED).
Q. Is the Intel D5-P4320 still in production?
No. Intel/Solidigm has discontinued the D5-P4320 family; the successor is the Solidigm D5-P5430 (PCIe 4.0, denser QLC). Refurbished K17579-002 units are a cost-efficient way to keep an existing PCIe 3.x U.2 footprint populated.
Q. What condition does T.E.S IT-SOLUTIONS supply?
Refurbished Grade A — SMART data verified, drive health and power-on hours inspected, functionally tested, cosmetically cleaned, and shipped from EU stock with worldwide B2B logistics.
Why buy from T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS is a Europe-based data-center hardware specialist active since 2007, focused on enterprise NICs, switches, transceivers, and NVMe / SAS storage. Every unit is identified by OEM and vendor part number, family-verified, and inspected before leaving our EU warehouse. Free pre-sale compatibility advice is included — especially useful on Lenovo OEM drives like the K17579-002, where firmware revision and AnyBay backplane compatibility can vary by ThinkSystem generation. EU stock, multi-currency invoicing, and global B2B express shipping.