Skip site navigation (1)Skip section navigation (2)
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+XXVgxwJN1tFEAwD0buQ@mail.gmail.com>
References:  <CAPi0psuykA-uKWQ7XTszRk3oNzPXPd+XXVgxwJN1tFEAwD0buQ@mail.gmail.com>

Next in thread | Previous in thread | Raw E-Mail | Index | Archive | Help
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



Want to link to this message? Use this URL: <http://docs.FreeBSD.org/cgi/mid.cgi?CAPi0psuLfjW=efxR-2C-4obG6K3S5nNP-CVVJbd5dwnMEWzRqQ>