Hey, remember me ?
I posted about some entreprise SSDs here before, and now I made a full blog post about their insides! With even more pictures!
I hope you enjoy it :)
Crikey. I have to wonder what that ~2TB unit must have cost in 2016.
Interesting that the one has such large capacitors in it. I imagine that is as last-ditch effort to keep the board powered long enough to finish flushing all of its caches in the event of a power failure.
Interesting that the one has such large capacitors in it. I imagine that is as last-ditch effort to keep the board powered long enough to finish flushing all of its caches in the event of a power failure.
That’s exactly the point of power loss protection (aka PLP.) As a side effect of not needing to wait for a flush after a write synchronous write workloads are dramatically faster on enterprise drives with PLP.
Edit: To add a bit of detail - you don’t need to wait for a flush after a synchronous write with PLP because the drive firmware can lie and immediately return from a flush call because there’s enough backup power to complete that flush if the power were cut.
I don’t even want to think about prices ahah, I could have done some research and talked about it on the article tho…
And yeah that is probably why
Yes, some chips (or rather parts of all chips) are spare on enterprise SSDs. You can even see how much is left via smart data
Thank you
Great post!
