Date: Sat, 20 Aug 2005 21:44:43 -0700 (PDT) From: Don Lewis <truckman@FreeBSD.org> To: anderson@centtech.com Cc: freebsd-hackers@FreeBSD.org, hselasky@c2i.net Subject: Re: Parking disk drive heads Message-ID: <200508210444.j7L4ihEg028916@gw.catspoiler.org> In-Reply-To: <4307EA82.7040108@centtech.com>
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On 20 Aug, Eric Anderson wrote: > As a data point, I've been using 64mb compact flash cards (rated at 100k > writes) in about 100 Soekris boxes (running FreeBSD) for about 4 years, > and they are all still working, except for one. Now, most compact flash > cards are rated at 1 million writes. > > And yes, I'm logging to the card and everything.. I've been using a laptop drive in my firewall and mail relay box for noise and power consumption reasons. The drive specs only give an expected lifetime of a few years when running 24x7, and I just had to replace a drive that had been in service about four years. I've given some thought to using flash, but I'm concerned about the number of writes, especially since a mail relay (maybe 1K messages/day) is going to be somewhat write intensive. What would be nice is a flash-backed md device that would flush its contents to flash on power fail.
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