From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <6e35c062041117160648281cc8@mail.gmail.com> Date: Wed, 17 Nov 2004 16:06:09 -0800 From: Jack Johnson To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu> Subject: Re: [9fans] Plan 9 killer applications? In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit References: <6e35c06204111709526d79bbe3@mail.gmail.com> Topicbox-Message-UUID: 05488f74-eace-11e9-9e20-41e7f4b1d025 On Wed, 17 Nov 2004 15:16:39 -0800, geoff@collyer.net wrote: > Actually /sys/src/fs with a WORM jukebox strikes me as a better > archival system than venti, especially if one is really concerned > about immutability. I think more about longevity and sheer size. I think in Sean's original paper or the wiki it mentions making arenas some reasonable size -- say 650MB -- so you can make archival copies of the arenas in case of disaster. Burn an archival-quality copy to CD (or multiple CDs) and store them away for seven years in redundant locations, and you're well on your way to meeting a whole slew of legal requirements. If you get paranoid about the live arenas, you can always go back and compare checksums against the archived versions. Plus, if you're saving seven years' worth of data, venti seems a little more efficient at using the available storage space (*WARNING* -- layman speaking). Now, using WORM drives for venti arenas might be even better.... I did chuckle at the statement about shredability, because I often picture RIAA or the BSA rooting through someone's venti archive looking for copyrighted material. That MP3 deleted two days later just lingers, waiting for the right lawyer to come along. -Jack