Over the course of a month, the Seagate and Hitachi drives both seem to go on sale for at least one week at both Amazon and Newegg, but limit 2 and limit 5 are both very common.
Just play a waiting game and you'll get your setup working sooner or later.
What platform are you planning to use with ZFS?
It looks like they use consumer drives in NAS or SAN, etc. I'm not sure how that equates to PC use, but all my 3-4 TB Seagates are working just fine.
I'm confused and it seems they are too. HGST is WD. The Hitachi Deskstar drives that they like are now sold as Toshiba, not HGST (a WD company).
The write ups I read a while back indicated that WD had to "give" the 3.5" drive portion of the business to Toshiba in order for regulators to approve the WD/HGST merger/acquisition. If that's the case I don't think they would be able to keep any portion of HGST's 3.5" drives or designs. That would point to the HGST drive being relabeled WD drives targeted at a different market segment.In contrast, I've noticed that HGST seems to be concentrating on "NAS" drives and "Enterprise" drives (Ultrastar). Presumably, these are newer designs that HGST kept for themselves - note that the exact details of the 3-way agreement have not been publicly revealed.
I did a little investigation after reading about HGST here and also couldn't determine if they're made by WD or not. Even if they are, BackBlaze seems to have good luck with their 4TB drives in the environment they run them in. I'm hoping mine hold up as well as BB has reported.
If you read the comments on the BackBlaze article, one of the employees of the blog indicated in a few weeks they will publish the raw data from their statistics which means more analysts can be done (assuming their data is complete). One post suggested their database of info was over 3GB.
Usually after a merger/acquisition one of the brands lingers around for a little while before being swallowed up. It seems like HGST is in the phase-out portion which is why their HGST logo has "A Western Digital company" under it. They're getting people used to the fact that HGST is WD.
Is BackBlaze like the company behind Amazon or the Google storage or something else?