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Re: [Gnumed-devel] Approaches to maintain clinical data uptime

From: James Busser
Subject: Re: [Gnumed-devel] Approaches to maintain clinical data uptime
Date: Wed, 3 May 2006 13:03:17 -0700

On May 3, 2006, at 11:27 AM, Tim Churches wrote:

Note that I would not recommend Amazon S3 as your **only** form of
offsite and/or archival back-up storage, but as a supplement to backup
archives on optical media and/or tapes, it seems rather promising.

Surely it would be the *fastest* way to retrieve something, if the alternative source (the media) were cloistered off site. Maybe the redundant local media could be limited to - re-writable dailies x6 (could even be skipped in the presence of a reliable slave database)
- re-writable weeklies x4
with write-once monthlies.*

Even just $10 US per month could add up, over months to years, as would any longer term storage (storing one gig per month for "monthlies"), the annual cost would be $US 120 + ($12 per year of "monthlies" accumulated). So the first year you would pay $132 and the 5th year you would pay $180. The added $48 would be in place of having to duplicate, and separately store, another 60 DVDs to provide redundancy to what would otherwise be a single "store" of years of data should the database get corrupted.

I think this would make tremendous sense. What further needs to be done to marshal the support for it to happen? Do we need funding, and/ or to solicit one or multiple donors?

* For care that had been delivered more than a month ago, surely monthlies would be sufficient (given that the monthly written 1-30 (average 15) days before the event could serve the purpose of "baseline", and the monthly written 1-30 (average 15) days after would show not only the rows that remained "live" at the time, but also any rows that had been audited to that point. --- It is true that records could have been manipulated in the window of time before the next dump, but I cannot imagine any regulatory bodies would *require* daily notarized backups be retained in perpetuity, that would be a LOT of media!

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