Date: Fri, 30 Dec 2011 08:10:21 -0500 From: Mehmet Erol Sanliturk <m.e.sanliturk@gmail.com> To: UFS User <ufs.user@yahoo.com> Cc: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: Re: Why do I feel like compact flash is more reliable than SSD ? Message-ID: <CAOgwaMumAGWcpsdVYWCu8n9XLNn3g463_r7m1L00nW4masJSKw@mail.gmail.com> In-Reply-To: <1325229204.34713.YahooMailNeo@web140405.mail.bf1.yahoo.com> References: <1325229204.34713.YahooMailNeo@web140405.mail.bf1.yahoo.com>
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On Fri, Dec 30, 2011 at 2:13 AM, UFS User <ufs.user@yahoo.com> wrote: > I have run a lot of different FreeBSD systems off (fileservers, firewalls, > routers, etc.) off of compact flash cards[1] and have never had a CF part > fail. > > Most of these were read-only mode, but some of them were left mounted 'rw' > for years (with no swapping, of course). The bottom line is, they never > failed, and some were (and are) in the field for over 8 years now. > > But everyone I know (including me) has had an SSD fail, usually with no > explanation. > > So is this just chance, or ... are CF cards really a lot more reliable > than SSD ? > > It's sloppy, but I never once considered mirroring my CF boot devices, and > now in 2011 I am actually buying two *different* SSDs to put into a boot > mirror > because I am afraid of mirroring identical ones and they both die at > identical times. > > Comments ? > > > > [1] Plain old store-bough Sandisk parts - so a good brand, but nothing > special > > The following pages , and references in them , may be useful : http://en.wikipedia.org/wiki/Solid-state_drive http://en.wikipedia.org/wiki/Wear_leveling http://en.wikipedia.org/wiki/Write_amplification http://en.wikipedia.org/wiki/Category:Solid-state_computer_storage_media http://en.wikipedia.org/wiki/Category:Solid-state_computer_storage Thank you very much . Mehmet Erol Sanliturk
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