Meh. I tried that SMR and it is for the birds. SSD caching will not be any good except for the small area paralleled by the SSD. If you are copying say 8TB to a 10TB shingled drive, the increase in speed will only make it appear that the first part is going faster. The Apples have had the SSD caching for years.As a data recording technology for hard drives, PMR is already 10 years old. So far, SMR is not a suitable replacement for PMR; hopefully, HAMR will be. Interestingly, SMR seems like the true MR technology that begs to be a hybrid. Considering data is written in bands or blocks like an SSD (SMR also implements TRIM), I can see SMR hybrids producing the performance we expect from a HDD without the SMR write performance pitfall. With hard drive manufactures having better access to NAND flash (e.g. WD buying SanDisk), hopefully we'll see more hybrid implementations that give us better HDD performance (certainly it won't be SSD speeds) with the ever-increasing capacity we expect from spinning MR technology.
So something interesting has happened, Seagate releasing Enterprise Capacity drives with the above specs but with 1 and 2 TB capacity, few platters and no helium. Depending on the pricing this could be the way to go for reliability without the premium pricing of the 8 and 10 TB models.Which Seagate 8TB? IIRC the Enterprise Capacity model is 2.5 million and 550 TB per year?
Edit to bump 1.2 to 2.5