{"product_id":"western-digital-dc-hc550-18tb-internal-hdd-for-surveillance-nas-7200rpm-6gb-s-sata-512mb-cache","title":"Western Digital DC HC550 18TB Internal HDD for Surveillance \u0026 NAS | 7200RPM, 6Gb\/s SATA, 512MB Cache","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eWhen you manage vast amounts of data, you need a drive that blends capacity with performance and reliability. The Western Digital DC HC550 18TB internal hard drive is engineered for data centers, cloud storage servers, enterprise NAS, and surveillance systems that demand dense storage with steady throughput. With an 18 TB footprint in a 3.5-inch form factor, this drive supports large archives, virtualized workloads, and sustained video retention while remaining compatible with standard SATA interfaces.\u003c\/p\u003e\n\u003cp\u003ePowered by OptiNAND technology, this model integrates flash with magnetic recording to optimize write operations and add a layer of protection during power events. The HelioSeal helium fill reduces friction and enables higher areal density, contributing to efficient performance in dense rack environments. In practical terms, you may experience improved usable capacity per drive and better energy efficiency across your array, with measured idle power as low as 5.1W and read\/write power around 6.8W depending on workload.\u003c\/p\u003e\n\u003ch3\u003eKey specs at a glance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCapacity and performance: 18 TB, 7200 RPM, 512 MB cache for responsive bursts\u003c\/li\u003e\n  \u003cli\u003eEfficient design: HelioSeal helium technology lowers friction and power consumption\u003c\/li\u003e\n  \u003cli\u003eFast data access: Sustained read\/write speeds up to 260 MB\/s for heavy workloads\u003c\/li\u003e\n  \u003cli\u003eDurability: High endurance with robust reliability metrics for 24\/7 operation\u003c\/li\u003e\n  \u003cli\u003eEnergy efficiency: Significant per-TB efficiency improvement with optimized power draw\u003c\/li\u003e\n  \u003cli\u003eConnectivity: SATA 6 Gb\/s interface for broad compatibility with existing systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIdeal use scenarios\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSurveillance hubs requiring long-term video retention and large media libraries\u003c\/li\u003e\n  \u003cli\u003eEnterprise NAS clusters handling virtualization, backups, and data services\u003c\/li\u003e\n  \u003cli\u003eCloud-ready storage pools and data centers needing scalable, dependable capacity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eChoosing the HC550 18TB drive aligns with a future-ready storage partner that emphasizes capacity, reliability, and efficiency. While results vary by workload, this drive is positioned to support demanding, sustained operations over time, backed by a robust design and long-term support from Western Digital.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What workloads is the WD HC550 18TB drive suited for?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Ideal for data centers, enterprise NAS, surveillance, and media servers needing large capacity and steady performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How does the HC550 balance efficiency and reliability?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: HelioSeal and OptiNAND reduce power use, while MTBF reaches 2.5 million hours and TBW 550TB, supporting durable long-term operation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Western Digital","offers":[{"title":"Default Title","offer_id":48401759830173,"sku":"B0FGHQKV2K","price":645.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/9596\/1757\/files\/western-digital-dchc550-18tb-drive-top-view.jpg?v=1781119216","url":"https:\/\/nexoltic.com\/products\/western-digital-dc-hc550-18tb-internal-hdd-for-surveillance-nas-7200rpm-6gb-s-sata-512mb-cache","provider":"Nexoltic","version":"1.0","type":"link"}