From mboxrd@z Thu Jan 1 00:00:00 1970 From: Max Waterman Subject: Re: md software raid Date: Wed, 28 Oct 2009 13:27:27 +0200 Message-ID: <4AE82A9F.5080907@fastmail.co.uk> References: <4D87015385157D4285D56CA6101072FF3A6675B8@exchange07.valvesoftware.com> <20091028030811708.FQZG2056@cdptpa-omta04.mail.rr.com> <4D87015385157D4285D56CA6101072FF3A6675B9@exchange07.valvesoftware.com> <90A9A736F2D34AA2907A05658347BEC5@m5> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <90A9A736F2D34AA2907A05658347BEC5@m5> Sender: linux-raid-owner@vger.kernel.org To: Guy Watkins Cc: 'Chris Green' , 'Leslie Rhorer' , linux-raid@vger.kernel.org List-Id: linux-raid.ids Guy Watkins wrote: > If you just used the 300 dots per inch as 1 bit per dot, you could store > 15120000 (300*300*8*10.5) bits per side (assuming 1/4 inch border on 8.5x11 > paper 2 sided). That is 1.8MB per page. You would need 555556 pages. That > would stack 463 feet high (assuming 100 pages per inch). > Yeah, but who, in their right mind, would stack them all in one pile? Max > } -----Original Message----- > } From: linux-raid-owner@vger.kernel.org [mailto:linux-raid- > } owner@vger.kernel.org] On Behalf Of Chris Green > } Sent: Tuesday, October 27, 2009 11:12 PM > } To: 'Leslie Rhorer'; linux-raid@vger.kernel.org > } Subject: RE: md software raid > } > } I was thinking 300dpi on letter paper gives you about 1mbyte, and you'd > } bloat it by 2x for redundancy, using both sides of the paper. > } But I guess 300 dpi is actually 300 dots per square inch, not 300 per > } linear inch, which means its only 10s of k per page. > } > } > } -----Original Message----- > } From: linux-raid-owner@vger.kernel.org [mailto:linux-raid- > } owner@vger.kernel.org] On Behalf Of Leslie Rhorer > } Sent: Tuesday, October 27, 2009 8:08 PM > } To: linux-raid@vger.kernel.org > } Subject: RE: md software raid > } > } > I'm guessing you could get about a megabyte per sheet of paper this way. > } > } You've got to be kidding! At 72 points/in, a font size of 8 allows > } for one byte and one space per inch, or about 10 bytes per line. One can > } fairly easily display 1KB per page, but nowhere near 1MB. > } > } > So a 1TB drive would take up 1000000 sheets of paper. Looking at > } > staples.com, > } > } Make that more like a billion pages. Remember, the entire Library > } of Congress can fit on a 1T drive. > } > } > it looks like that would cost you in the neighborhood of $8000. The ink > } > cartridges > } > } It's more like $8 million. > } > } -- > } To unsubscribe from this list: send the line "unsubscribe linux-raid" in > } the body of a message to majordomo@vger.kernel.org > } More majordomo info at http://vger.kernel.org/majordomo-info.html > } -- > } To unsubscribe from this list: send the line "unsubscribe linux-raid" in > } the body of a message to majordomo@vger.kernel.org > } More majordomo info at http://vger.kernel.org/majordomo-info.html > > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >