Works as expected good price. Looks brand new

As described.

Muy bueno brinda mucha seguridad para todo tipo de almacenamiento

Hasta ahora este disco ha resultado ser un excelente HDD a muy buen precio. Me está saliendo muy buen diaco de vigilancia!!!

Siempre compro esta marca de Hardrive y son exelentes y perfectas⭐⭐⭐⭐⭐

This hard drive works fine in the application. However, I've had other drives at work fine, but didn't last in this one has not been in long enough to see if it will last. Assuming it last it will be a find hard drive, but I use these drives and surveillance systems which means they're in use 24 hours a day seven days a week 365 days a year therefore, I really won't be able to give it five STARZ Gerald has worked at least a year

The MDD (MDD4TSATA6472DVR) 4TB 7200RPM Internal Surveillance Hard Drive is designed for use in DVR systems. It promises a large storage capacity, a substantial 64MB cache, and a fast 7200RPM speed, all tailored for the high-demand needs of surveillance applications. However, while the specifications suggest a reliable choice for recording and storing video footage, the real-world performance could have improved in key areas.ProsLarge Storage Capacity (4TB):The 4TB capacity is ample for surveillance setups, providing significant space to store extensive high-definition video footage from multiple cameras. This is ideal for DVR systems requiring continuous recording and long retention times.High Cache Size (64MB):With a 64MB cache, the drive offers enhanced read and write performance, improving data transfer speed. This feature is particularly beneficial for surveillance systems where quick access to stored footage is essential.Fast 7200RPM Speed:The 7200RPM speed ensures faster data access and reduced latency, making it a good fit for real-time video recording and playback. This speed is generally above the standard for many surveillance hard drives, which often run at 5400 RPM.ConsPoor Durability (Lasted Only 6 Months):Despite its promising specifications, the drive exhibited a significant issue with longevity. It failed after only six months of usage in a DVR surveillance system, far below the expected lifespan for a hard drive in this category. This is a critical flaw for a product intended for continuous operation in demanding environments.Warranty Replacement Drive Also Failed:The warranty replacement process was straightforward, but the replacement drive experienced the same failure within six months of use. This indicates a potential issue with the product’s overall reliability or a broader quality control problem. Experiencing two failures in a row severely impacts confidence in the brand and product.Mechanical Failure Symptoms:The drive exhibited clear signs of mechanical failure, including the inability to format and a sudden stop in recording. These issues indicate internal defects, such as faulty components or poor build quality, making the drive unreliable for critical surveillance tasks.Final VerdictThe MDD (MDD4TSATA6472DVR) 4TB Surveillance Hard Drive has promising specifications on paper, with its large capacity, high cache size, and fast 7200RPM speed seemingly tailored for DVR systems. However, its poor durability and repeated mechanical failures overshadow these benefits. Reliability is paramount for a product designed to handle continuous operation in surveillance environments, and this drive fell far behind expectations.Given its repeated failures and lack of long-term stability, this product is 1 out of 5 stars. While it performs well initially, its lack of durability and recurring mechanical issues make it unreliable for surveillance applications. Improved quality control and enhanced durability are necessary for this product to be viable.

I ordered 7 of these for a Netgear ReadyNAS Pro 6. 6 for the NAS and a spare. Only one showed up on the day they were supposed to be delivered. 5 showed up a day late so I had 6 to use. One never was sent to UPS to deliver. Added the 6 I had to the NAS. One drive not recognized by the NAS and making a horrible clicking sound. Tried it on a PC and got the same result. Drive is defective so now I am waiting for the one drive that never shipped and for a replacement for the defective drive.Edit after receiving replacement for defective drive: Added new drive to NAS in slot 3. Booted up NAS and it recognized all 6 drives. While creating volume on NAS hard drive in slot 5 quit working. Tried on Mac and Windows PC. Drive not recognized on either computer. Now waiting on replacement for that drive. Still waiting on the lost in transit drive