{"product_id":"western-digital-4-tb-red-plus-5400-rpm-sata-iii-3-5-internal-nas-hard-disk-drive","title":"Western Digital 4 TB Red Plus 5400 rpm SATA III 3.5\" Internal NAS Hard Disk Drive","description":"\u003c!-- ====================================================\n     ITFactory.ca — Shopify Product Description\n     WD Red Plus 4TB NAS Hard Drive — WD40EFPX\n     Part No: WD40EFPX | UPC: \n     DIV-FREE, NO EMOJI — safe for all Shopify themes\n     ==================================================== --\u003e\n \n\u003c!-- Badges --\u003e\n\u003cp\u003e\n  \u003cspan style=\"display:inline-block;background:#c8000a;color:#fff;font-size:11px;font-weight:600;letter-spacing:0.08em;text-transform:uppercase;padding:4px 10px;border-radius:3px;margin-right:6px;\"\u003eNAS Hard Drive\u003c\/span\u003e\n  \u003cspan style=\"display:inline-block;background:#5c5c7a;color:#fff;font-size:11px;font-weight:600;letter-spacing:0.08em;text-transform:uppercase;padding:4px 10px;border-radius:3px;margin-right:6px;\"\u003e5400 RPM — CMR\u003c\/span\u003e\n  \u003cspan style=\"display:inline-block;background:#1a1a2e;color:#fff;font-size:11px;font-weight:600;letter-spacing:0.08em;text-transform:uppercase;padding:4px 10px;border-radius:3px;\"\u003eUp to 8-Bay RAID Systems\u003c\/span\u003e\n\u003c\/p\u003e\n \n\u003c!-- Tagline --\u003e\n\u003cp style=\"font-size:17px;color:#3d3d5c;font-weight:300;border-left:3px solid #c8000a;padding-left:14px;margin:14px 0 20px;\"\u003ePurpose-built for always-on NAS environments — 4TB, 5400 RPM, 256MB cache, CMR recording, and NASware 3.0 technology for reliable 24\/7 operation in RAID-optimized storage systems.\u003c\/p\u003e\n \n\u003c!-- Intro --\u003e\n\u003cp style=\"color:#3d3d5c;font-size:15px;margin-bottom:14px;\"\u003eThe WD Red Plus (WD40EFPX) is a 3.5-inch SATA NAS hard drive engineered for the continuous read\/write demands of home and small-to-medium business NAS systems. Where desktop drives fail under always-on shared storage workloads, the WD Red Plus is designed from the ground up for exactly this environment — running 24\/7 in RAID-powered enclosures, handling simultaneous access from multiple users, and surviving the vibration and thermal conditions of multi-drive NAS bays. At 4TB with \u003cstrong\u003e5400 RPM speed\u003c\/strong\u003e, a \u003cstrong\u003e256MB cache\u003c\/strong\u003e, and \u003cstrong\u003eCMR recording technology\u003c\/strong\u003e, it is one of the most capable drives in the mainstream NAS category.\u003c\/p\u003e\n \n\u003cp style=\"color:#3d3d5c;font-size:15px;margin-bottom:20px;\"\u003eAvailable at \u003cstrong\u003eITFactory.ca\u003c\/strong\u003e — Canada's trusted source for NAS storage and network components.\u003c\/p\u003e\n \n\u003chr style=\"border:none;border-top:1px solid #e2e0da;margin:28px 0;\"\u003e\n \n\u003c!-- NAS vs desktop explainer --\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;background:#f5f5fa;border:1px solid #d8d8ea;border-radius:8px;\"\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:20px 22px;\"\u003e\n      \u003cp style=\"font-size:15px;font-weight:700;color:#1a1a2e;margin:0 0 12px;\"\u003eWhy NAS Drives Are Not Interchangeable with Desktop Drives\u003c\/p\u003e\n      \u003cp style=\"font-size:14px;color:#3d3d5c;margin:0 0 10px;\"\u003eDesktop hard drives are engineered for single-user, intermittent workloads — they are not designed to run continuously in a RAID array, handle simultaneous network requests from multiple users, or tolerate the vibration generated by neighbouring drives in a multi-bay enclosure. When a desktop drive encounters a read error in a RAID environment, it may spend too long attempting recovery — causing the RAID controller to drop the drive from the array, resulting in data loss.\u003c\/p\u003e\n      \u003cp style=\"font-size:14px;color:#3d3d5c;margin:0;\"\u003eThe WD Red Plus addresses all of this: \u003cstrong\u003eTLER (Time-Limited Error Recovery)\u003c\/strong\u003e caps the error recovery window so the RAID controller stays informed, \u003cstrong\u003eNASware 3.0\u003c\/strong\u003e optimizes firmware parameters for NAS workloads, and the drive is stress-tested for 24\/7 operation in up to 8-bay enclosures. Using a desktop drive in a NAS is a false economy that typically ends in premature failure or RAID degradation.\u003c\/p\u003e\n    \u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n \n\u003chr style=\"border:none;border-top:1px solid #e2e0da;margin:28px 0;\"\u003e\n \n\u003c!-- Key features --\u003e\n\u003ch2 style=\"font-size:18px;font-weight:700;color:#1a1a2e;margin-bottom:14px;\"\u003eKey Features\u003c\/h2\u003e\n \n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"width:50%;padding:10px 12px 10px 0;vertical-align:top;border-bottom:1px solid #f0f0f0;\"\u003e\n      \u003cp style=\"margin:0;font-size:14px;color:#3d3d5c;\"\u003e\u003cstrong style=\"color:#1a1a2e;\"\u003eNASware 3.0 Technology\u003c\/strong\u003e\u003cbr\u003eWD's proprietary NASware 3.0 firmware fine-tunes drive parameters specifically for NAS workloads — improving compatibility with NAS enclosures, optimizing RAID rebuild efficiency, and enhancing overall system reliability during simultaneous multi-user access.\u003c\/p\u003e\n    \u003c\/td\u003e\n    \u003ctd style=\"width:50%;padding:10px 0 10px 12px;vertical-align:top;border-bottom:1px solid #f0f0f0;\"\u003e\n      \u003cp style=\"margin:0;font-size:14px;color:#3d3d5c;\"\u003e\u003cstrong style=\"color:#1a1a2e;\"\u003eTLER — RAID Error Recovery Control\u003c\/strong\u003e\u003cbr\u003eTime-Limited Error Recovery caps the time the drive spends attempting to recover from a read error, ensuring the RAID controller is kept informed and the array stays healthy. This is the critical difference between NAS drives and desktop drives in RAID environments.\u003c\/p\u003e\n    \u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:10px 12px 10px 0;vertical-align:top;border-bottom:1px solid #f0f0f0;\"\u003e\n      \u003cp style=\"margin:0;font-size:14px;color:#3d3d5c;\"\u003e\u003cstrong style=\"color:#1a1a2e;\"\u003eEfficient 5400 RPM Operation\u003c\/strong\u003e\u003cbr\u003eRuns at 5400 RPM for a balance of performance and power efficiency — delivering up to 180 MB\/s sustained transfer rates. Quieter and cooler than 7200 RPM drives while still outpacing entry-level 5400 RPM NAS drives for multi-user access and media streaming workloads.\u003c\/p\u003e\n    \u003c\/td\u003e\n    \u003ctd style=\"padding:10px 0 10px 12px;vertical-align:top;border-bottom:1px solid #f0f0f0;\"\u003e\n      \u003cp style=\"margin:0;font-size:14px;color:#3d3d5c;\"\u003e\u003cstrong style=\"color:#1a1a2e;\"\u003eCMR Recording Technology\u003c\/strong\u003e\u003cbr\u003eConventional Magnetic Recording delivers consistent, reliable write performance — critical for RAID rebuilds and write-intensive NAS workloads. Unlike SMR drives, CMR has no write performance penalties during random write operations or RAID array rebuilding.\u003c\/p\u003e\n    \u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:10px 12px 10px 0;vertical-align:top;border-bottom:1px solid #f0f0f0;\"\u003e\n      \u003cp style=\"margin:0;font-size:14px;color:#3d3d5c;\"\u003e\u003cstrong style=\"color:#1a1a2e;\"\u003e256MB Cache\u003c\/strong\u003e\u003cbr\u003eA 256MB buffer improves performance during simultaneous read\/write operations from multiple network users — reducing latency when several devices access the NAS concurrently for media streaming, file sharing, and backups.\u003c\/p\u003e\n    \u003c\/td\u003e\n    \u003ctd style=\"padding:10px 0 10px 12px;vertical-align:top;border-bottom:1px solid #f0f0f0;\"\u003e\n      \u003cp style=\"margin:0;font-size:14px;color:#3d3d5c;\"\u003e\u003cstrong style=\"color:#1a1a2e;\"\u003e180 TB\/Year Workload Rating\u003c\/strong\u003e\u003cbr\u003eRated for three times the annual workload of a typical desktop drive — covering the continuous read\/write demands of always-on NAS systems handling multiple users, automated backups, media serving, and surveillance footage.\u003c\/p\u003e\n    \u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:10px 12px 10px 0;vertical-align:top;border-bottom:1px solid #f0f0f0;\"\u003e\n      \u003cp style=\"margin:0;font-size:14px;color:#3d3d5c;\"\u003e\u003cstrong style=\"color:#1a1a2e;\"\u003eRotational Vibration (RV) Sensors\u003c\/strong\u003e\u003cbr\u003eBuilt-in RV sensors detect and compensate for vibration from adjacent spinning drives in multi-bay NAS enclosures — maintaining read\/write accuracy and performance in 4, 6, and 8-bay systems where multiple drives operate simultaneously.\u003c\/p\u003e\n    \u003c\/td\u003e\n    \u003ctd style=\"padding:10px 0 10px 12px;vertical-align:top;border-bottom:1px solid #f0f0f0;\"\u003e\n      \u003cp style=\"margin:0;font-size:14px;color:#3d3d5c;\"\u003e\u003cstrong style=\"color:#1a1a2e;\"\u003e1 Million Hours MTBF\u003c\/strong\u003e\u003cbr\u003eMean Time Between Failures of 1 million hours reflects the drive's engineering for sustained, always-on operation — providing confidence in long-term reliability for NAS systems that run continuously without scheduled downtime.\u003c\/p\u003e\n    \u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:10px 12px 10px 0;vertical-align:top;border-bottom:1px solid #f0f0f0;\"\u003e\n      \u003cp style=\"margin:0;font-size:14px;color:#3d3d5c;\"\u003e\u003cstrong style=\"color:#1a1a2e;\"\u003eIdeal for ZFS, RAID 0\/1\/5\/6 and JBOD\u003c\/strong\u003e\u003cbr\u003eOptimized for all common NAS RAID configurations and ZFS file systems used by Synology, QNAP, and other major NAS brands. TLER and NASware 3.0 together ensure smooth RAID rebuild operations that are often the most demanding moment in a drive's life.\u003c\/p\u003e\n    \u003c\/td\u003e\n    \u003ctd style=\"padding:10px 0 10px 12px;vertical-align:top;border-bottom:1px solid #f0f0f0;\"\u003e\n      \u003cp style=\"margin:0;font-size:14px;color:#3d3d5c;\"\u003e\u003cstrong style=\"color:#1a1a2e;\"\u003eBroad NAS Compatibility\u003c\/strong\u003e\u003cbr\u003eTested and validated with major NAS brands including Synology, QNAP, Asustor, and others. Western Digital maintains an active compatibility list updated with new NAS models — check wdc.com for your specific enclosure before purchase.\u003c\/p\u003e\n    \u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:10px 12px 10px 0;vertical-align:top;\"\u003e\n      \u003cp style=\"margin:0;font-size:14px;color:#3d3d5c;\"\u003e\u003cstrong style=\"color:#1a1a2e;\"\u003eDual-Plane Balance Control\u003c\/strong\u003e\u003cbr\u003eReduces vibration and noise during operation — important in home and office environments where NAS systems run continuously near workspaces or living areas. Quieter operation without sacrificing performance.\u003c\/p\u003e\n    \u003c\/td\u003e\n    \u003ctd style=\"padding:10px 0 10px 12px;vertical-align:top;\"\u003e\n      \u003cp style=\"margin:0;font-size:14px;color:#3d3d5c;\"\u003e\u003cstrong style=\"color:#1a1a2e;\"\u003e3-Year Limited Warranty\u003c\/strong\u003e\u003cbr\u003eBacked by WD's 3-year limited warranty covering the drive against manufacturing defects during its rated service life in NAS environments.\u003c\/p\u003e\n    \u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n \n\u003chr style=\"border:none;border-top:1px solid #e2e0da;margin:28px 0;\"\u003e\n \n\u003c!-- Who it's for --\u003e\n\u003ch2 style=\"font-size:18px;font-weight:700;color:#1a1a2e;margin-bottom:10px;\"\u003eWho Is This For?\u003c\/h2\u003e\n\u003cp style=\"color:#3d3d5c;font-size:15px;margin-bottom:14px;\"\u003eThe WD Red Plus 4TB is the right drive for home users and small offices building or expanding a NAS for file sharing, media streaming, and backup storage. At 5400 RPM it runs quietly and efficiently — ideal for home environments where low noise and low power consumption matter as much as reliability.\u003c\/p\u003e\n \n\u003cp style=\"margin:0;\"\u003e\n  \u003cspan style=\"display:inline-block;background:#fff;border:1px solid #e2e0da;border-radius:20px;padding:5px 13px;font-size:13px;color:#3d3d5c;margin:4px 4px 4px 0;\"\u003eHome and SOHO NAS builds\u003c\/span\u003e\n  \u003cspan style=\"display:inline-block;background:#fff;border:1px solid #e2e0da;border-radius:20px;padding:5px 13px;font-size:13px;color:#3d3d5c;margin:4px 4px 4px 0;\"\u003eSmall to mid-size business file servers\u003c\/span\u003e\n  \u003cspan style=\"display:inline-block;background:#fff;border:1px solid #e2e0da;border-radius:20px;padding:5px 13px;font-size:13px;color:#3d3d5c;margin:4px 4px 4px 0;\"\u003e4K media streaming and Plex servers\u003c\/span\u003e\n  \u003cspan style=\"display:inline-block;background:#fff;border:1px solid #e2e0da;border-radius:20px;padding:5px 13px;font-size:13px;color:#3d3d5c;margin:4px 4px 4px 0;\"\u003eSynology and QNAP enclosures\u003c\/span\u003e\n  \u003cspan style=\"display:inline-block;background:#fff;border:1px solid #e2e0da;border-radius:20px;padding:5px 13px;font-size:13px;color:#3d3d5c;margin:4px 4px 4px 0;\"\u003eBackup and archive storage systems\u003c\/span\u003e\n  \u003cspan style=\"display:inline-block;background:#fff;border:1px solid #e2e0da;border-radius:20px;padding:5px 13px;font-size:13px;color:#3d3d5c;margin:4px 4px 4px 0;\"\u003eRAID 0, 1, 5, 6, and ZFS arrays\u003c\/span\u003e\n\u003c\/p\u003e\n \n\u003chr style=\"border:none;border-top:1px solid #e2e0da;margin:28px 0;\"\u003e\n \n\u003c!-- Specs --\u003e\n\u003ch2 style=\"font-size:18px;font-weight:700;color:#1a1a2e;margin-bottom:14px;\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;\"\u003e\n  \u003ctr style=\"border-bottom:1px solid #e2e0da;\"\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;width:42%;font-weight:500;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003eWestern Digital (WD)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"border-bottom:1px solid #e2e0da;\"\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;font-weight:500;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003eWD Red Plus NAS Hard Drive\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"border-bottom:1px solid #e2e0da;\"\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;font-weight:500;\"\u003ePart Number\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003eWD40EFPX\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"border-bottom:1px solid #e2e0da;\"\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;font-weight:500;\"\u003eDrive Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003eHDD (Hard Disk Drive) — 3.5 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"border-bottom:1px solid #e2e0da;\"\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;font-weight:500;\"\u003eCapacity\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003e4TB\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"border-bottom:1px solid #e2e0da;\"\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;font-weight:500;\"\u003eInterface\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003eSATA III (6 Gb\/s)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"border-bottom:1px solid #e2e0da;\"\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;font-weight:500;\"\u003eRotation Speed\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003e5400 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"border-bottom:1px solid #e2e0da;\"\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;font-weight:500;\"\u003eCache\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003e256 MB\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"border-bottom:1px solid #e2e0da;\"\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;font-weight:500;\"\u003eMax Sequential Transfer\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003eUp to 180 MB\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"border-bottom:1px solid #e2e0da;\"\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;font-weight:500;\"\u003eRecording Technology\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003eCMR (Conventional Magnetic Recording)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"border-bottom:1px solid #e2e0da;\"\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;font-weight:500;\"\u003eWorkload Rating\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003e180 TB\/year\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"border-bottom:1px solid #e2e0da;\"\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;font-weight:500;\"\u003eNAS Bay Support\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003eUp to 8 bays\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"border-bottom:1px solid #e2e0da;\"\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;font-weight:500;\"\u003eRAID Support\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003eRAID 0, 1, 5, 6, JBOD, ZFS\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"border-bottom:1px solid #e2e0da;\"\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;font-weight:500;\"\u003eError Recovery\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003eTLER (Time-Limited Error Recovery)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"border-bottom:1px solid #e2e0da;\"\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;font-weight:500;\"\u003eNAS Firmware\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003eNASware 3.0\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"border-bottom:1px solid #e2e0da;\"\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;font-weight:500;\"\u003eRV Sensors\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003eYes — rotational vibration compensation\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"border-bottom:1px solid #e2e0da;\"\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;font-weight:500;\"\u003eMTBF\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003e1,000,000 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"border-bottom:1px solid #e2e0da;\"\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;font-weight:500;\"\u003eLoad\/Unload Cycles\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003e600,000\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"border-bottom:1px solid #e2e0da;\"\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;font-weight:500;\"\u003eNon-Recoverable Read Errors\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003e\u0026lt;1 in 10¹⁴ bits read\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"border-bottom:1px solid #e2e0da;\"\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;font-weight:500;\"\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003e0°C to 65°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"border-bottom:1px solid #e2e0da;\"\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;font-weight:500;\"\u003eCompatibility\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003eSynology, QNAP, Asustor, and major NAS brands\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"border-bottom:1px solid #e2e0da;\"\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;font-weight:500;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003e3-year limited warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 4px;color:#7a7a9a;font-weight:500;\"\u003eSold by\u003c\/td\u003e\n\u003ctd style=\"padding:9px 4px;color:#3d3d5c;\"\u003eITFactory.ca — Canadian authorized WD reseller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n \n\u003chr style=\"border:none;border-top:1px solid #e2e0da;margin:28px 0;\"\u003e\n \n\u003c!-- Why ITFactory --\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;background:linear-gradient(135deg,#1a1a2e 0%,#6a0000 100%);border-radius:10px;\"\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:26px;\"\u003e\n      \u003ch2 style=\"font-size:18px;font-weight:700;color:#fff;margin:0 0 10px;\"\u003eWhy Buy from ITFactory.ca?\u003c\/h2\u003e\n      \u003cp style=\"color:rgba(255,255,255,0.78);font-size:14px;margin:0 0 16px;\"\u003eITFactory.ca is a trusted Canadian retailer for NAS storage and network components, serving home users, IT professionals, and businesses across the country. Every product we sell is genuine and backed by our team.\u003c\/p\u003e\n      \u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"padding:3px 0;font-size:13px;color:rgba(255,255,255,0.88);width:50%;\"\u003e→  Authorized Canadian WD reseller\u003c\/td\u003e\n          \u003ctd style=\"padding:3px 0;font-size:13px;color:rgba(255,255,255,0.88);width:50%;\"\u003e→  Genuine WD product with warranty\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"padding:3px 0;font-size:13px;color:rgba(255,255,255,0.88);\"\u003e→  Fast shipping across Canada\u003c\/td\u003e\n          \u003ctd style=\"padding:3px 0;font-size:13px;color:rgba(255,255,255,0.88);\"\u003e→  Business invoicing available\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"padding:3px 0;font-size:13px;color:rgba(255,255,255,0.88);\"\u003e→  Multiple capacities available\u003c\/td\u003e\n          \u003ctd style=\"padding:3px 0;font-size:13px;color:rgba(255,255,255,0.88);\"\u003e→  Bilingual customer support\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/table\u003e\n    \u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n \n\u003chr style=\"border:none;border-top:1px solid #e2e0da;margin:28px 0;\"\u003e\n \n\u003c!-- FAQ --\u003e\n\u003ch2 style=\"font-size:18px;font-weight:700;color:#1a1a2e;margin-bottom:4px;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n \n\u003cdetails style=\"border-bottom:1px solid #e2e0da;padding:12px 0;\"\u003e\n  \u003csummary style=\"font-size:14.5px;font-weight:500;color:#1a1a2e;cursor:pointer;list-style:none;\"\u003eWhat is the difference between WD Red, WD Red Plus, and WD Red Pro?\u003c\/summary\u003e\n  \u003cp style=\"margin-top:10px;font-size:14px;color:#3d3d5c;\"\u003eWD Red is the entry-level NAS drive — 5400 RPM, smaller cache, SMR recording on some capacities, and rated for up to 8-bay systems. WD Red Plus (this drive) is the mainstream choice — 5400 RPM, CMR recording on all capacities, 256MB cache, and rated for up to 8-bay systems with a 180 TB\/year workload. WD Red Pro steps up for larger deployments — rated for up to 24-bay systems, a 550 TB\/year workload, and a 5-year warranty. For most home and small business NAS builds with up to 8 bays, the WD Red Plus hits the right balance of performance and value.\u003c\/p\u003e\n\u003c\/details\u003e\n \n\u003cdetails style=\"border-bottom:1px solid #e2e0da;padding:12px 0;\"\u003e\n  \u003csummary style=\"font-size:14.5px;font-weight:500;color:#1a1a2e;cursor:pointer;list-style:none;\"\u003eWhy does it matter that this uses CMR and not SMR?\u003c\/summary\u003e\n  \u003cp style=\"margin-top:10px;font-size:14px;color:#3d3d5c;\"\u003eSMR (Shingled Magnetic Recording) writes new tracks overlapping old ones — which improves density but causes significant write speed penalties during random writes and RAID rebuilds, as the drive must read, modify, and rewrite overlapping track bands. This can dramatically extend RAID rebuild times and cause poor NAS performance under mixed workloads. CMR (Conventional Magnetic Recording) has no such limitation — writes are direct and consistent. For NAS use, especially in RAID configurations, CMR is the reliable choice. The WD Red Plus uses CMR on all capacities.\u003c\/p\u003e\n\u003c\/details\u003e\n \n\u003cdetails style=\"border-bottom:1px solid #e2e0da;padding:12px 0;\"\u003e\n  \u003csummary style=\"font-size:14.5px;font-weight:500;color:#1a1a2e;cursor:pointer;list-style:none;\"\u003eWhat is TLER and why does it matter for RAID?\u003c\/summary\u003e\n  \u003cp style=\"margin-top:10px;font-size:14px;color:#3d3d5c;\"\u003eTLER (Time-Limited Error Recovery) limits how long the drive spends attempting to recover from a read error before reporting the problem back to the RAID controller. Desktop drives have no TLER — they may spend minutes attempting recovery on their own, during which the RAID controller assumes the drive has failed and may drop it from the array. WD Red Plus drives cap error recovery within a defined window, keeping the RAID controller informed and preventing unnecessary array degradation from a recoverable error.\u003c\/p\u003e\n\u003c\/details\u003e\n \n\u003cdetails style=\"border-bottom:1px solid #e2e0da;padding:12px 0;\"\u003e\n  \u003csummary style=\"font-size:14.5px;font-weight:500;color:#1a1a2e;cursor:pointer;list-style:none;\"\u003eIs the WD Red Plus compatible with my Synology or QNAP NAS?\u003c\/summary\u003e\n  \u003cp style=\"margin-top:10px;font-size:14px;color:#3d3d5c;\"\u003eWD Red Plus drives are tested and validated with major NAS brands including Synology, QNAP, and Asustor. Before purchasing, it is always advisable to verify compatibility with your specific NAS model using the manufacturer's online compatibility list — Synology's compatibility database and QNAP's compatibility list are both searchable by drive model number. The WD40EFPX is widely supported across current Synology DS, RS, and DX series enclosures and QNAP TS series enclosures.\u003c\/p\u003e\n\u003c\/details\u003e\n \n\u003cdetails style=\"border-bottom:1px solid #e2e0da;padding:12px 0;\"\u003e\n  \u003csummary style=\"font-size:14.5px;font-weight:500;color:#1a1a2e;cursor:pointer;list-style:none;\"\u003eMy NAS has more than 8 bays — can I still use this drive?\u003c\/summary\u003e\n  \u003cp style=\"margin-top:10px;font-size:14px;color:#3d3d5c;\"\u003eThe WD Red Plus is rated and validated for NAS systems with up to 8 drive bays. In enclosures with more bays, WD recommends the WD Red Pro — rated for up to 24-bay systems with a 550 TB\/year workload and a 5-year warranty. Using a WD Red Plus in a larger enclosure may work in practice but falls outside the drive's validated specification and could affect warranty coverage. WD Red Pro drives are also available at ITFactory.ca.\u003c\/p\u003e\n\u003c\/details\u003e\n \n\u003cdetails style=\"border-bottom:1px solid #e2e0da;padding:12px 0;\"\u003e\n  \u003csummary style=\"font-size:14.5px;font-weight:500;color:#1a1a2e;cursor:pointer;list-style:none;\"\u003eCan I use this drive in a desktop PC or external enclosure?\u003c\/summary\u003e\n  \u003cp style=\"margin-top:10px;font-size:14px;color:#3d3d5c;\"\u003eYes — the WD Red Plus uses a standard SATA III interface and will work in a desktop PC or external USB enclosure. However, it is optimized for NAS and RAID workloads. For a desktop PC primary drive, WD Blue or WD Black drives are better suited. For a standalone external drive, the WD Red Plus will function correctly but its NAS-specific features (TLER, NASware 3.0) are only meaningful in a NAS or RAID context.\u003c\/p\u003e\n\u003c\/details\u003e\n \n\u003c!-- End ITFactory.ca product description --\u003e","brand":"Western Digital","offers":[{"title":"Default Title","offer_id":52014270316676,"sku":"WD40EFPX","price":319.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0370\/5857\/6516\/files\/1718636147_1790045.jpg?v=1780804343","url":"https:\/\/itfactory.ca\/fr\/products\/western-digital-4-tb-red-plus-5400-rpm-sata-iii-3-5-internal-nas-hard-disk-drive","provider":"ITFactory.ca","version":"1.0","type":"link"}