Date: Thu, 21 May 2015 09:48:52 -0700 From: Chris Stankevitz <chrisstankevitz@gmail.com> To: freebsd-questions <freebsd-questions@freebsd.org> Subject: Re: SLOG and SSDs: are "super" capacitors really needed? Message-ID: <CAPi0psuLfjW=efxR-2C-4obG6K3S5nNP-CVVJbd5dwnMEWzRqQ@mail.gmail.com> In-Reply-To: <CAPi0psuykA-uKWQ7XTszRk3oNzPXPd%2BXXVgxwJN1tFEAwD0buQ@mail.gmail.com> References: <CAPi0psuykA-uKWQ7XTszRk3oNzPXPd%2BXXVgxwJN1tFEAwD0buQ@mail.gmail.com>
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On Thu, May 21, 2015 at 8:38 AM, Chris Stankevitz <chrisstankevitz@gmail.com> wrote: > Question: do SSD drives report the write has "completed" only after > the data has been burned into non-volatile storage? Apparently the answer to this is "no. SSDs report the write is completed long before the data has made its way to non-volatile storage": https://www.usenix.org/system/files/conference/fast13/fast13-final80.pdf Thank you for the replies, Chris
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