I like it on paper. I mean the 2TB with 8GB SSD is just a little bit more expensive than non-hybrid drives. Have you actually used it, and is it worth the money?
I have a number of them, but I'm moving to drives in the 8 to 14 TB size range, and there are no SSHDs at those capacities.
On great thing about the Seagate SSHDs is that they allow safe writeback write caching.
For most drives, it is recommended that writes be synchronous (OS says "write", drive puts data on disk, drive tells OS "done").
With writeback caching -- this is OS says "write", drive puts data on disk DRAM cache, drive tells OS "done", drive eventually moves data from cache to the disk. Obviously better performance, since the OS isn't stalled waiting for the write.
The can be quite dangerous, however - because if there's a power failure between saying "done" and moving the data from cache to disk, data is lost or the file system is corrupted.
Seagate's SSHDs employ a brilliant trick to eliminate this risk. If power is suddenly lost, the drive turns the platter motor into a generator. It uses the momentum of the platters to power the electronics for long enough to copy the DRAM cache to the flash cache on the SSD - saving all of the dirty cache data. When the drive is powered back up, the dirty cache data is copied from the flash to the platters.
For many loads that include lots of metadata writes, this writeback caching can be quite a benefit.
For my servers at work, all of the RAID controllers have similar dirty cache safety mechanisms. The controller card has a flash the same size as the controller cache, and there's a battery backup to make sure that the cache is saved on a power hit.
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Really? I have lots of spinners for near-line stuff, and I simply don't notice any spinning and clicking sounds.
Are you using Western Digital spinners? (Mine are all Seagate.)
But, if you want to spend 5X the price for storage for a little bit of quiet - spend your money.
Just did a quick check - I have at least 36 spinners in my home office. I never hear clicks. (All Seagate.)