WD Purple WD43PURZ 4TB 3.5" 5400RPM 256MB Cache SATA III

More Cameras. More Clarity. More Surveillance. Capture it in Purple- Engineered specifically for surveillance security systems.- Supports up to 180 TB/yr workload rate*.- Tuned for write-intensive, low bit-rate, high stream-count applications typical to most surveillance applications.- Prioritized write-operations for maximized surveillance performance.- TLER & ATA streaming support.- Support for more than eight bays**.- Tarnish-resistant components**.*Workload Rate is defined as the amount of user data transferred to or from the hard drive. Workload Rate is annualized (TB transferred ? (8760 / recorded power-on hours)). Workload Rate will vary depending on your hardware and software components and configurations.**For capacities 4TB and higher.ModelWD PurpleWD43PURZCapacity4TBInterfaceSATA IIICache256MBRotational Speed5400RPMData TransferSATA III: 6.0 Gbit/sPhysical Drive Size3.5"PackagingOEM anti-static bag-Type Of Drive: HDDPhysical Drive Size: 3.5Connection: SATA IIICapacity: 4TBDrive Classification: SurveillancePackaging: OEM