--- product_id: 525600047 title: "Ultrastar DC HC550 18TB 7200RPM 3.5\" SATA Hard Drive WUH721818ALE6L4 (Renewed)" brand: "western digital" price: "$1160.35" currency: USD in_stock: true category: "Amazon Renewed" url: https://www.desertcart.us/products/525600047-ultrastar-dc-hc550-18tb-7200rpm-3-5-sata-hard-drive store_origin: US region: United States of America --- # 7200 RPM high-speed spin 18TB massive storage HelioSeal power efficiency Ultrastar DC HC550 18TB 7200RPM 3.5" SATA Hard Drive WUH721818ALE6L4 (Renewed) **Brand:** western digital **Price:** $1160.35 **Availability:** ✅ In Stock ## Summary > 🚀 Elevate your data game with the Ultrastar 18TB powerhouse! ## Quick Answers - **What is this?** Ultrastar DC HC550 18TB 7200RPM 3.5" SATA Hard Drive WUH721818ALE6L4 (Renewed) by western digital - **How much does it cost?** $1160.35 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/525600047-ultrastar-dc-hc550-18tb-7200rpm-3-5-sata-hard-drive) ## 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 Capacity:** 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:** Unmatched accuracy for enterprise-grade 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 rotational speed, HelioSeal technology for superior power efficiency, and pioneering Energy-Assisted Magnetic Recording with a Triple Stage Actuator, it delivers high capacity, speed, and reliability to reduce total cost of ownership in data centers. ## Description This Ultrastar DC HC550 is an 18TB enterprise hard drive built on a helium-sealed platform, using Conventional Magnetic Recording (CMR) technology for consistent, predictable performance across a wide range of enterprise workloads. It connects via a SATA 6Gb/s interface, backed by a 512MB cache buffer for improved random write performance, and uses a 512e sector format (512-byte emulated, 4K physical) for broad compatibility with enterprise storage controllers. This drive is rated for continuous 24x7 operation, making it well suited for hyperscale data centers, distributed file systems, cloud storage, and object storage deployments requiring high data transfer rates and minimal latency. It carries a 2.5 million hour projected MTBF rating and is rated for a workload of up to 550TB per year for demanding, always-on enterprise environments. ## Features - 18TB capacity in a standard 3.5-inch enterprise form factor, built on a helium-sealed platform — delivers lower power draw and reduced weight for high-density data center deployments - SATA 6Gb/s interface with a 7200 RPM spindle speed — engineered for reliable, high-throughput performance in demanding enterprise storage environments - Conventional Magnetic Recording (CMR) technology delivers consistent, predictable performance across a wide range of enterprise workloads, from bulk storage to distributed file systems - 512MB cache buffer paired with a 512e sector format — improves random write performance while maintaining broad compatibility with enterprise storage controllers and legacy applications - Rated for up to 550TB/year workload with a 2.5 million hour projected MTBF — engineered for continuous 24x7 operation in demanding, always-on enterprise environments ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09NP4Y2JC | | Additional Features | Portable | | Best Sellers Rank | #9,222 in Amazon Renewed ( See Top 100 in Amazon Renewed ) #544 in Internal Hard Drives #2,885 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 | 3.8 3.8 out of 5 stars (61) | | 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 g | | Manufacturer | Western Digital | | Media Speed | 150-200 MB/s | | Mfr Part Number | 0F38459-cr | | Model Name | WUH721818ALE6L4 | | Model Number | WUH721818ALE6L4 | | Number of Items | 1 | | Specific Uses For Product | Business | | UPC | 656942537373 | | Warranty Description | 2 Year Seller 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 ![Ultrastar DC HC550 18TB 7200RPM 3.5" SATA Hard Drive WUH721818ALE6L4 (Renewed) - Image 1](https://m.media-amazon.com/images/I/81DhwxYJtXL.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. ## 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) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/525600047-ultrastar-dc-hc550-18tb-7200rpm-3-5-sata-hard-drive](https://www.desertcart.us/products/525600047-ultrastar-dc-hc550-18tb-7200rpm-3-5-sata-hard-drive) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-10-09*