Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s

Western Digital (WD) 4TB WD40PURZ is a. Recording Technology: UsesCMR (Conventional Magnetic Recording) technology, which is preferred for continuous write-intensive surveillance workloads. Transfer Rates: Supports sustained data transfer speeds up to150-175 MB/s and a 6 Gb/s SATA interface.

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