From owner-freebsd-current@FreeBSD.ORG  Mon Dec 19 22:49:30 2011
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To: Alexander Best <arundel@freebsd.org>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Mon, 19 Dec 2011 22:47:00 GMT."
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Date: Mon, 19 Dec 2011 22:49:28 +0000
Message-ID: <32197.1324334968@critter.freebsd.dk>
Cc: freebsd-fs@freebsd.org, freebsd-current@freebsd.org
Subject: Re: can a wrong alignment cause a decrease in a hdd's life
	expectancy?
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In message <20111219224700.GA75581@freebsd.org>, Alexander Best writes:
>On Mon Dec 19 11, Poul-Henning Kamp wrote:
>> In message <20111219221617.GA70383@freebsd.org>, Alexander Best writes:
>> 
>> >ps: the hdd only gets mounted read-only!
>> 
>> There is no known wear-effects in flash storage as long as you
>> only read.
>> 
>> You may need to do refresh-writes every 5-10 years to avoid
>> tunnel-leakage bit errors, but most flash controllers use semi-long
>> ECC syndromes and will do so on first bit that gives an read error.
>
>this is a regular hdd i believe -- no ssd. at least when i plug it into my
>usb drive i hear the hdd spinning up and causing vibrations. i don't think
>that would be the case with an ssd.

Ahh, sorry, I don't know why I thought it was flash.


-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.