---
product_id: 525600047
title: "Western Digital Ultrastar DC HC550 18TB 7200RPM 3.5\" SATA Hard Drive WUH721818ALE6L4 (Renewed)"
brand: "western digital"
price: "A$761"
currency: AUD
in_stock: true
reviews_count: 8
category: "Amazon Renewed"
url: https://www.desertcart.com.au/products/525600047-western-digital-ultrastar-dc-hc550-18tb-7200rpm-3-5-sata
store_origin: AU
region: Australia
---

# 7200 RPM high-speed rotation 18TB massive capacity HelioSeal for power efficiency Western Digital Ultrastar DC HC550 18TB 7200RPM 3.5" SATA Hard Drive WUH721818ALE6L4 (Renewed)

**Brand:** western digital
**Price:** A$761
**Availability:** ✅ In Stock

## Summary

> 💼 Elevate your data game with enterprise-grade power and efficiency!

## Quick Answers

- **What is this?** Western Digital Ultrastar DC HC550 18TB 7200RPM 3.5" SATA Hard Drive WUH721818ALE6L4 (Renewed) by western digital
- **How much does it cost?** A$761 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/525600047-western-digital-ultrastar-dc-hc550-18tb-7200rpm-3-5-sata)

## Best For

- western digital enthusiasts

## Why This Product

- Trusted western digital brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Massive 18TB Storage:** Store your entire digital empire without compromise.
- • **Blazing 7200 RPM Speed:** Experience rapid data access that keeps your workflow seamless.
- • **HelioSeal Power Efficiency:** Cut energy costs with industry-leading helium-sealed design.
- • **Triple Stage Actuator Precision:** Ultra-accurate read/write for mission-critical enterprise performance.
- • **Energy-Assisted Magnetic Recording:** Next-gen tech for enhanced data density and reliability.

## Overview

The Western Digital Ultrastar DC HC550 is a renewed 18TB 3.5-inch SATA hard drive designed for enterprise environments. Featuring 7200 RPM speed, HelioSeal helium technology for superior power efficiency, and pioneering Energy-Assisted Magnetic Recording alongside a Triple Stage Actuator, it delivers reliable, high-capacity storage optimized for data centers and professional use.

## Description

Data center decisions are driven by TCO. The Ultrastar DC HC550, with 18TB, play a leading role in reducing TCO.

Review: Just Great - I have installed many of these multi-terabyte HGST drives in the past, and their failure rate is commendably low. Failures do happen with all hard drives, and this brand is known for its reliability. These particular drives came in great condition and worked perfectly upon installation. HGST, now a Western Digital brand, has been one I can trust, and I still do. Will gladly buy more of these as needed.
Review: 2 drives DOA - I've had good luck up until this point purchasing refurbished/renewed drives. Unfortunately with my last order of two 18 TB drives, my luck has changed. One drive was recognized by my system but indicated it had 27k+ hours of use (over 3 years) which in itself is fine, however immediately at idle I found the drive was clicking nonstop every couple of seconds which is generally an indication of imminent failure. Second drive would not spin up and was not recognized in 2 different systems. Perhaps drives were damaged in shipping? In any event, requesting refund.

## Features

- 18TB capacity in a standard 3.5-inch form factor
- CMR technology works with all capacity enterprise applications & environments
- HelioSeal design delivers outstanding power efficiency
- Industry’s first HDD with Energy-Assisted Magnetic Recording technology
- Industry’s first Triple Stage Actuator

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09NP4Y2JC |
| Additional Features | Portable |
| Best Sellers Rank | #5,402 in Amazon Renewed ( See Top 100 in Amazon Renewed ) #369 in Internal Hard Drives #1,691 in Renewed Computers & Accessories |
| Brand | Western Digital |
| Built-In Media | 18TB Data Center Hard Drive |
| Cache Memory Installed Size | 512 MB |
| Color | Red |
| Compatible Devices | Desktop |
| Connectivity Technology | SATA |
| Customer Reviews | 3.6 out of 5 stars 55 Reviews |
| Digital Storage Capacity | 18000 GB |
| Enclosure Material | Aluminum, Glass |
| Form Factor | 3.5-inch |
| Hard Disk Description | Mechanical Hard Disk |
| Hard Disk Form Factor | 3.5 Inches |
| Hard Disk Interface | Serial ATA-600 |
| Hard Disk Rotational Speed | 7200 RPM |
| Hard-Drive Size | 18 TB |
| Hardware Connectivity | SATA 6.0 Gb/s |
| Installation Type | Internal Hard Drive |
| Item Dimensions L x W x Thickness | 5.79"L x 4"W x 1.03"Th |
| Item Weight | 690 Grams |
| Manufacturer | Western Digital |
| Media Speed | 150-200 MB/s |
| Model Name | WUH721818ALE6L4 |
| Model Number | WUH721818ALE6L4 |
| Number of Items | 1 |
| Special Feature | Portable |
| Specific Uses For Product | Business |
| UPC | 656942537373 |
| Warranty Description | 90 days limited warranty |

## Product Details

- **Brand:** Western Digital
- **Color:** Red
- **Compatible Devices:** Desktop
- **Connectivity Technology:** SATA
- **Digital Storage Capacity:** 18000 GB
- **Hard Disk Description:** Mechanical Hard Disk
- **Hard Disk Form Factor:** 3.5 Inches
- **Hard Disk Interface:** Serial ATA-600
- **Installation Type:** Internal Hard Drive
- **Special Feature:** Portable

## Images

![Western Digital Ultrastar DC HC550 18TB 7200RPM 3.5" SATA Hard Drive WUH721818ALE6L4 (Renewed) - Image 1](https://m.media-amazon.com/images/I/710JaskXbqL.jpg)

## Questions & Answers

**Q: Is this the power disable model?**
A: Hi.
The model number for this hard drive was WUH721818ALE6L4 when I got this HDD.
This model number does not support POWER DISABLE.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Just Great
*by P***Y on July 12, 2023*

I have installed many of these multi-terabyte HGST drives in the past, and their failure rate is commendably low. Failures do happen with all hard drives, and this brand is known for its reliability. These particular drives came in great condition and worked perfectly upon installation. HGST, now a Western Digital brand, has been one I can trust, and I still do. Will gladly buy more of these as needed.

### ⭐ 2 drives DOA
*by H***H on February 19, 2025*

I've had good luck up until this point purchasing refurbished/renewed drives. Unfortunately with my last order of two 18 TB drives, my luck has changed. One drive was recognized by my system but indicated it had 27k+ hours of use (over 3 years) which in itself is fine, however immediately at idle I found the drive was clicking nonstop every couple of seconds which is generally an indication of imminent failure. Second drive would not spin up and was not recognized in 2 different systems. Perhaps drives were damaged in shipping? In any event, requesting refund.

### ⭐⭐⭐⭐⭐ Seems good
*by P***E on August 14, 2024*

One thing to check when you buy renewed is the serial number. These checked out and when tested were like brand new drives. I love these.

## Frequently Bought Together

- Western Digital Ultrastar DC HC550 18TB 7200RPM 3.5" SATA Hard Drive WUH721818ALE6L4 (Renewed)
- SABRENT USB 3.0 to SATA External Hard Drive Lay-Flat Docking Station for 2.5 or 3.5in HDD, SSD [Support UASP] (EC-DFLT)
- HGST WD Ultrastar DC HC530 14TB SATA 6Gb/s 3.5-Inch Data Center HDD - WUH721414ALE604 0F31152 (Renewed)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-20*