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Rectangular 2.5 inch SATA SSD in black metal casing

Axiom

Axiom EP400 480 GB 2.5" SATA internal SSD

SKU CH-WGK4-1R03W

SATA internal SSD with 480 GB capacity, 510 MB/s read, 485 MB/s write, 3.6 DWPD endurance and 256-bit AES encryption

  • Sequential read speed510 MB/s
  • Sequential write speed485 MB/s
  • Product typeInternal
  • Controller chipAxiom
  • Sustained sequential read rate485 MB/s
  • Sustained sequential write rate485 MB/s
  • Enterprise endurance of 3.6 DWPD for heavy write workloads
  • 256-bit AES encryption protects stored data
  • 510 MB/s peak read and 485 MB/s sustained write speeds
  • 5-inch SATA form factor fits standard drive bays
  • 03 PB written lifetime endurance rating

Axiom EP400 480 GB SATA SSD

The Axiom EP400 is a 480 GB 2.5-inch internal solid-state drive built on a SATA 600 interface. It uses 2-bit MLC V-NAND with Charge Trap Flash technology and an Axiom controller to deliver sustained sequential read and write speeds of 485 MB/s. The drive targets enterprise workloads that demand consistent low-latency I/O and strong data integrity.

Upgrade from HDD or entry-level SATA SSD

Replacing a mechanical hard drive or a consumer-grade SATA SSD with the EP400 adds sustained performance of up to 95K read IOPS and 28K write IOPS. The jump is worth it when workloads require 3.6 drive writes per day endurance and up to 12.03 petabytes written over the drive life. Hardware-based 256-bit AES encryption and enhanced end-to-end data protection address compliance needs that basic drives cannot meet.

Standard 2.5-inch SATA installation

The drive fits any 2.5-inch bay with a SATA data and power connection and requires no special drivers. Enterprise features such as power-loss protection, dynamic thermal monitoring and a temperature sensor reduce the risk of data corruption during unexpected shutdowns. The most common issue is forgetting to enable AHCI mode in the system BIOS, which limits the drive to legacy IDE performance.

How it compares

Measured against everything we stock in Internal NVMe & SATA SSDs, at today’s prices. Recalculated every night.

Price $1,232.99
Pricier than about 90% of the 1,994 comparable items (median $180.49).
Sequential read speed 510 MB/s
Lower than about 90% of the 1,180 comparable items (median 2,400 MB/s).
Sequential write speed 485 MB/s
Lower than about 83% of the 1,173 comparable items (median 1,700 MB/s).

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Specifications

Product
Brand nameAxiom
Product typeInternal
Performance
Sequential read speed510 MB/s
Sequential write speed485 MB/s
Sustained sequential read rate485 MB/s
Sustained sequential write rate485 MB/s
Storage
Controller chipAxiom
Power
Active power draw4.1 W

Questions about this item

Does the 2.5" EP400 need a hot-swap carrier or will it mount directly in a standard drive bay?

The EP400 is a 2.5 inch enterprise hot-swap SSD designed for carrier-based bays; it slides into a compatible hot-swap tray rather than screwing directly into a fixed cage.

When cloning an OS onto the EP400, do I need to enable AES encryption in BIOS before the first boot?

The drive includes 256-bit AES hardware encryption that is always active; no BIOS toggle is required for basic operation, but you must configure the ATA security password if you want to lock the volume.

At 3.6 DWPD, how many years before the 480 GB EP400 reaches its 12.03 PBW endurance limit?

At the rated 3.6 drive writes per day the 480 GB EP400 reaches its 12.03 petabyte written limit in approximately five years of continuous full-capacity writes.

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