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Worked exactly as it should.

finally a drive that can hold all my games the speed is alright also

Quick shipping. Easy for my son to install. Upgraded security cam DVR. Works beautifully.

Easy install

I ordered this SAS drive, but my computer has only SATA connectors.

Arrived before deliver date great product

Fast, Reliable.

Great drives. Ordered 8 and all 8 are working perfectly. They are fully compatible with the Synology Nas DS720+ Dual Bay Drives. I contacted Synology Techs and they recommended these drives even though they are no on the compatibly list. Synology says these are the max drive size for the DS720+ drives.

Update: New drive works great; I have about 2OTB stored and filed away for safe keeping. back to 5 stars, fast replacement turnaround.

Fast and quiet. Couldn't ask for better.

Hard drive appeared bad on arrival but was immediately replaced and handled the return. Very positive experience

-Build quality -Price per TB of storage

Bought three of these. One for three different security DVRs that needed extra storage. They are working great so far. The run cool and play video back without any issues.

Works fine

- nice capacity for the price, - ideal for NAS with 4 drive slots and less - 7200 RPM with good cache - Data recovery possible, depending of the NAS technology

What a few models can make in performance difference. When comparing the new ST4000VX007 performance compare to an older version ST4000DM000 you can see a big performance difference considering the main specifications are identical. You then compare those specs to a Western Digital 7200RPM hard drive which is even more amazing that the performance is almost on par with hard drive models that are just reaching the 3 year mark in age. For the testing I used CrystalDiskMark on a Windows 10 x64 system. Seagate ST4000VX007 (5900 RPM, 64M Cache) -------------------------------------------------------------- Sequential Read : 176.826 MB/s Sequential Write : 172.492 MB/s Random Read 512KB : 53.898 MB/s Random Write 512KB : 90.506 MB/s Random Read 4KB (QD=1) : 0.600 MB/s [ 146.4 IOPS] Random Write 4KB (QD=1) : 1.508 MB/s [ 368.1 IOPS] Random Read 4KB (QD=32) : 1.666 MB/s [ 406.6 IOPS] Random Write 4KB (QD=32) : 1.509 MB/s [ 368.4 IOPS] WD1003FZEX (7200 RPM, 64M Cache) ---------------------------------------------------- Sequential Read : 202.486 MB/s Sequential Write : 197.416 MB/s Random Read 512KB : 65.774 MB/s Random Write 512KB : 121.537 MB/s Random Read 4KB (QD=1) : 0.724 MB/s [ 176.9 IOPS] Random Write 4KB (QD=1) : 2.096 MB/s [ 511.7 IOPS] Random Read 4KB (QD=32) : 1.893 MB/s [ 462.2 IOPS] Random Write 4KB (QD=32) : 2.063 MB/s [ 503.6 IOPS] Seagate ST4000DM000 (5900 RPM, 64M Cache) ----------------------------------------------------------------- Sequential Read : 143.287 MB/s Sequential Write : 129.919 MB/s Random Read 512KB : 35.893 MB/s Random Write 512KB : 65.565 MB/s Random Read 4KB (QD=1) : 0.365 MB/s [ 89.0 IOPS] Random Write 4KB (QD=1) : 0.938 MB/s [ 229.0 IOPS] Random Read 4KB (QD=32) : 0.870 MB/s [ 212.5 IOPS] Random Write 4KB (QD=32) : 0.890 MB/s [ 217.3 IOPS] What these results tell us is that the ST4000VX007 has almost double the performance of its ancestors and is almost on par with 7200 RPM drivers dated the same time period as it ancestors. It would have been nice to compare it with a 7200RPM drive of made recently but I do not have any around to compare it to.