Home > Internal Hard Drives > HGST Ultrastar 7K4000 (0F17719) 4TB 64MB Cache 7200RPM SATA III 6.0Gb/s 3.5" Internal Desktop Hard Drive for PC, Mac, NAS, RAID, CCTV DVR (Renewed) w/1 Year Warranty ; Visit the Amazon Renewed Store

HGST Ultrastar 7K4000

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20,235 reviews covering 40 products for the category Internal Hard Drives

Experiential insights by users

About HGST Ultrastar 7K4000
85% found it to be extremely reliable and durable, but 15% experienced frequent crashes
In the initial run, we found no bad sectors, indicating the hard drives' reliability and durability.
In the initial run, I found no bad sectors, indicating the hard drive's reliability and durability.
I noticed that the drive had 387 bad sectors on initial install and it increased daily as NAS ran system diagnostics. The drive had 387 bad sectors on initial install and increased daily as NAS ran system diagnostics.
79% liked its seamless compatibility with multiple systems, but 21% encountered compatibility issues
I did not realize that the hard drive was refurbished and it was my fault for not reading the full title.
During read operations, I find the drive to be fine, but it creates a lot of noise during write operations.
69% appreciated its quiet operation, while 31% found it too noisy
During read operations, the drive is fine, but during write operations, I notice it creates a lot of noise.
85% liked its compact and sleek design, while 15% found it too bulky
The hard drives in the readers are not noisy.
I advise running regular diagnostics on the drives to avoid installing someone else's trash.
During read operations, it's fine but during write operations, I create a lot of noise.
70% praised for its advanced security features, while 30% found them insufficient
I am concerned that the data was cleared, which seems like an attempt to obfuscate the information.
I compared the noise level of this drive with other brands like Seagate and WD and found that it is noticeable from the second it was added into the RAID.
71% appreciated its fast read and write speeds, while 29% experienced slow performance
I noticed that the drive had 387 bad sectors on initial install and it increased daily as the NAS ran system diagnostics. The drive had 387 bad sectors on initial install and increased daily as I ran system diagnostics on the NAS.
74% praised for its massive storage capacity, but 26% found it too small
I am using two 4 tb.3.5 drives to back up my audio, movies and pictures.
I purchased a 4TB hard drive but it showed 2TB instead. I returned it and ordered another one which showed 1.6TB.

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