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Lenovo ThinkSystem S4520 3.5 inch hot-swap SSD with silver metal casing and connector end

Lenovo

Lenovo 4XB7A17120 S4520 960GB SATA enterprise SSD

SKU CH-PFZT-YCNTF MPN 4XB7A17120

A 960 GB 3.5-inch SATA enterprise SSD built with 144-layer 3D NAND TLC for read-intensive workloads, delivering up to 550 MB/s sequential read and 510 MB/s sequential write

  • Total capacity960 GB
  • Sequential read speedUp to 550 MB/s
  • Sequential write speedUp to 510 MB/s
  • Interface typeSATA III
  • Form factor3.5 in (8.89 cm)
  • Product typeInternal Solid State Drive (SSD)
  • 960 GB capacity supports large data sets
  • 550 MBps sequential read speeds up boot and web workloads
  • 510 MBps sequential write handles logging and analytics
  • 144-layer 3D NAND TLC improves endurance over the 4510 series
  • 5-inch hot-swap SATA form factor fits enterprise bays

3.5" SATA 960 GB enterprise SSD

The Lenovo ThinkSystem S4520 is a 3.5-inch internal solid-state drive built for server and storage arrays. It delivers 960 GB of capacity through a SATA III 6 Gbps interface using 144-layer 3D NAND TLC flash. Sequential reads reach up to 550 MBps and writes up to 510 MBps.

Read-intensive workloads, not write-heavy tasks

This drive suits read-intensive applications such as boot volumes, web servers, operational databases and analytics where reads dominate. Builders who need higher write endurance or mixed-use endurance for databases, logging or virtualization should look at a different drive class.

144-layer 3D NAND TLC with SATA III interface

The combination of 144-layer 3D NAND TLC memory and a 6 Gbps SATA interface determines both the read-intensive endurance rating and the 550 MBps sequential read ceiling. Match the interface and workload profile to your server backplane before ordering.

How it compares

Measured against everything we stock in Server & Data Center SSDs, at today’s prices. Recalculated every night.

Price $534.99
Cheaper than about 68% of the 1,039 comparable items (median $992.99).
Total capacity 960 GB
Lower than about 72% of the 522 comparable items (median 3.2 TB).
Sequential read speed Up to 550 MB/s
Lower than about 80% of the 311 comparable items (median 6,500 MB/s).
Price per TB $557.28 per TB
Typical for this category: the median of 522 items is $595.64 per TB.

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Specifications

Product
Brand nameLenovo
Product lineS4520
Total capacity960 GB
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Performance
Sequential read speedUp to 550 MB/s
Sequential write speedUp to 510 MB/s
Storage
NAND flash type3D NAND TLC
Connectivity
Connection protocolSATA
Ports & slots
Interface typeSATA III
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight0.41 kg
Package size262 × 196 × 97 mm

Questions about this item

How much heat and power does the 3.5" S4520 960GB draw during sustained 550 MBps reads all day?

The SATA III interface limits the drive to 6 Gbps, so power draw stays within standard 3.5" SATA SSD limits during continuous 550 MBps read workloads.

Which server drive bay and backplane must I already have to install this 3.5" hot-swap SATA SSD?

You need a 3.5-inch hot-swap drive bay wired for SATA III 6 Gbps and a compatible backplane that accepts the S4520's standard SATA connector.

Will the S4520 960GB work alongside older S4510 drives in the same RAID array?

Yes, both use the same SATA III interface and 3.5" form factor, so they can share a RAID array, though the S4520 offers higher endurance than the S4510.

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