The noise level is almost identical on all the models, but there are differences. The largest drives are also the loudest with a dBA rating of 25 when idle and 26 when seeking. With a weight of 750grams, the 6TB model is also the heaviest of them all. million bytes, 1GB = 1 billion bytes, and 1TB = 1 trillion bytes. Actual user capacity may be less depending on operating environment. http://media.webcollage.net/rwvfp/wc/cp/18574709/module/wdc//_cp/products/1413335120504/tab-ac400f4c-4428-497b-9f34-63a3b9c75d5f/8cfae72e-fb78-49a4-accb-6f5861c122cb.mov.mp4full.mp4

Western Digital DATA SHEET SURVEILLANCE HARD DRIVES - Western Digital

Next to being designed for 24/7 always-on scenarios, the WD Purple series is also designed for high-temperature environments. The temperature rating of the WD Purple, on the base casting, ranges from zero to 65 degrees Celcius when operating and -40 to 70 when non-operating. MJPEG is an older standard for video compression. First used in the mid 1990s, it is less efficient and is likely the more common standard for lower resolution video. WD Red: pensados para NAS y grandes sistemas de almacenamiento de datos, para uso continuado. Mejor rendimiento en lectura que en escritura. I'm using this to increase the capacity of my Swann 8580 series NVR surveillance system. It won't allow anything larger than 6 terabytes and it came with a 2 terabyte hard drive. As used for storage capacity, 1TB =With an MTBF of up to 1 million hours 3, WD Purple™ drives are engineered for mainstream surveillance DVRs and NVRs that operate 24/7. With tarnish-resistant components 3 and support for more than eight bays 4, WD Purple drives deliver reliable operation even in harsh environments. Este disco no es mas que un disco como cualquier otro, pero lo preferí frente a otras marcas algo mas baratas porque estos suelen tener mas fallos y por la poca diferencia de precio no merece la pena arriesgarse. Y esto no lo digo yo, podéis buscar las estadísticas de un centro de datos con miles de discos y los de marca mas barata siempre suelen fallar mas que el resto, sin entrar en modelos concretos.

Western Digital WD Purple - HDD - 6TB - SATA 6gb/s wd63purz Western Digital WD Purple - HDD - 6TB - SATA 6gb/s wd63purz

As used for storage capacity, 1TB = one trillion bytes. Actual user capacity may be less, depending on operating environment.Compré el de 6TBs porque el precio por TB era el mismo que en el modelo de 4TBs y la capacidad es algo que siempre se queda corta, aunque ahora pensemos que nunca llenaremos 6TBs, en un par de años estarán llenos, pues cada vez hay mas dispositivos que graban en 4K, luego será 8K, cámaras con mas y mas megapixels... WD AllFrame technology delivers optimizations for write-intensive, low bit-rate, high stream-count workloads typical to mainstream surveillance applications

WD Purple Surveillance Hard Drive up to 8TB of Storage

WD Green: son los que consumen menos, hacen menos ruido y generan menos calor, pensados para HTPC y equipos multimedia de salón. WD Purple™ drives feature a workload rating of up to 180TB/year 2 - up to three times that of desktop drives - to handle the unique demands of mainstream video surveillance DVR and NVR systems.Western Digital clasifica sus discos por colores, siendo cada color un disco pensado para cierto tipo de uso: You don't have permission to access /content/dam/doc-library/en_us/assets/public/western-digital/product/internal-drives/wd-purple-hdd/spec-sheet-wd-purple-surveillance-hdd-6tb-oem.pdf WD Purple drives feature a workload rating of up to 180TB/year 2 - up to three times that of desktop drives - to handle the unique demands of mainstream video surveillance DVR and NVR systems.