Does anyone have any real-world experience on using different Western Digital HDs as external drives? Specifically is there any real pros or cons to using either the WD purple vs the WD Red Pro? Both are 8TB drives, SATA III 6 Gb/s, spinning at 7200rpm with 256MB Cache, 5 year warranties and designed for 24/7 high read/write applications. And both are about the same cost.
WD Purple states: "Exclusive to the WD Purple series is AllFrame technology. By reducing errors, pixilation and video interruptions, AllFrame attempts to reduce video frame loss. WD Purple also features TLER and support for the ATA streaming command set." - Not sure if that is just Marketing or any real advantage in a DVR application or if the HS17 is even supporting those features. Purple has 10 read/write heads.
WD Red Pro is designed for NAS applications but can be used in any large read/write application and as such has a 600,000 load/unload cycle ratings vs 300,000 for HD Purple. And the Red Pro is designed for annualized workload of 300TB/year vs the WD Purple annualized workload of 180TB/year. Which would be an advantage if 7 tuners are constantly reading/writing to the single drive, especially if 2 of those turners are reading/writing large 4K data content. Also Red Pro has 14 read/write heads and use less power and is quieter than the Purple.
Attached is a older link that compares the drives (fyi some info is outdated like warranty, cache, drive size) but the core technical data is still good:
Again looking for some input from anyone with any hands-on experience vs theoretical feedback or if anyone knows what drive technology/specs comes with the internal HS17 HD.
Understand that external SSD would be better overall but currently the cost vs storage/performance ratio is not there yet so strictly focused on HDDs at this time.
Many Thanks in advance!
Update: Interesting, on the WD Purple moving up to 10TB doubles the Annualized workload rating from 180TB/yr to 360TB/yr - although the Load/Unload cycles remains at 300,000. So the question really comes down to - does anyone know for sure with the HS17 reading/writing 5 HD channels & 2 UHD channels simultaneously does it benefit most from an external HD that is optimized for continuous read/writes (WD Purple) or benefits better from an HD optimized for random read/writes (WD Red Pro) - and this is determined by how the HS17's (7) tuner's data are recorded while operating simultaneously.
Here's some good info on HDs as applied to NAS NVR and dedicated NVR that could be extrapolated to DVRs: