The WD Red 4TB NAS HDD (WD40EFRX) is designed specifically for NAS enclosures and 24/7 operation. Capacity: 4TB Cache: 64MB NASware 2.0 firmware for reliability Perfect for: NAS builds (Synology, QNAP, TrueNAS) RAID storage setups Home lab servers Plex & Jellyfin media servers ✅ Tested healthy ✅ NAS-rated, built for long-term use
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