Incoming data faster than vdevs

[jmoschetti45]

This is more of a theoretical question, but lets assume the freenas box has some impressive hardware, and is on a 100GbE connection, with a dozen clients on 10GbE connections writing to it, in bursts.

Spinning rust can't handle that speed even if we're talking 48 drives in an array. SLOG doesn't exactly seem like it'd do much either here? What options are there? Some sort of pending write cache?

 

[SweetAndLow]

Ssd drives, lots of vdevs and expecting to not max out all the 10Gig at once is a good start.

 

[jgreco]

ZFS writes data to memory before committing a transaction group to disk. Assuming your bursty write fits into a transaction group, you.d be fine.