Parking disk drive heads
truckman at FreeBSD.org
Sun Aug 21 04:45:18 GMT 2005
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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