Re: ZFS performance

[Stefan Monnier <monnier@iro.umontreal.ca>]

Michael Stone [2022-11-11 14:59:46] wrote:
> On Fri, Nov 11, 2022 at 02:05:33PM -0500, Dan Ritter wrote:
>>300TB/year. That's a little bizarre: it's 9.51 MB/s. Modern
>>high end spinners also claim 200MB/s or more when feeding them
>>continuous writes. Apparently WD thinks that can't be sustained
>>more than 5% of the time.
> Which makes sense for most workloads. Very rarely do people write
> continuously to disks *and never keep the data there to read it
> later*.

And on top of it, only write sequentially (since any head movement
brings that bandwidth down very quickly).


        Stefan