@Pete-S said in 16TB spinning rust is here:
I think you can divide 3.5" drives into three major categories:
- Desktop drives - Consumer 8/24 usage, 2y warranty, SATA - WD Desktop, Seagate Desktop etc
- NAS drives - "Pro/semi-pro" 24/7 usage, 3y warranty, SATA - WD Red, Seagate Iron Wolf etc
- Enterprise drives - Heavy 24/7 usage, 5y warranty, SATA or SAS - WD Ultrastar, Seagate Exos etc
I think large desktop drives has become a niche market since that is not what people buy. And if you look at 10TB or more, the NAS drives and the enterprise drives cost almost the same but enterprise drives always have 5 year warranty so...
Unless trends will change I think you'll see a lot more enterprise drives used by Backblaze. I think in general they will always pick the lowest cost per TB drives they can find in volumes they can buy.
Assuming everything keeps moving to the cloud, there are going to be huge volumes of hyperscale high capacity drives sold and less of everything else. Considering energy cost and density, hyperscale companies are always looking for the highest capacity drives.
WD Blue 3/year warranty
WD Black 5/year warranty
Both are non-Enterprise drives, and labeled as Desktop drives.
The fact that Backblaze used 34,737 Seagate st4000dm000 desktop consumer level drives that had a failure rate of 2.13% is by no means surprising. Most of the drives they use are not enterprise drives.
They must do it like that because they must think it's cheaper to deal with failed hard drives for the bulk of that tier of data.
However, looking at the HGST Enterprise grade drives they used almost 10,000 of (hms5c4040ble640)... those had a significantly lower failure rate.
Perhaps it's cheaper to go with Desktop drives for certain tiers of data, dealing with the failure rate, and for other data tiers, they choose Enterprise drives with much lower failure rates.