Dwight;

2.5mil 215 foot 16mm microfilm has the same LE as 5mil 100 foot 16mm
microfilm.

I believe the misconception about 'thin film' got started back with the
acetate days.

If you are archiving to microfilm I would recommend the 215' 16mm rolls
because they take less labor to produce, less space to store and less cost
(labor again) to scan.

Regards;

John

-- 
John R Glover
707-773-1257
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www.linkedin.com/in/johnrglover
On Tue, Apr 13, 2010 at 9:37 AM, WALLIS Dwight D <
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> Gordy, we have been using microfilm as a back up for 75+ year retention
> electronic records, including the county's deed records, and the payroll
> registers generated out of SAP. Regarding the latter, I was surprised in
> a recent SAP archiving project that the film is actually being used
> extensively, even though the data is still currently on-line and active.
> I'll confess that I am not entirely sure why this is the case.
>
> Regarding microfilm backup of this kind, I would look into microfilm
> service bureaus, not necessarily solely into traditional COM firms
> (which is where the IT folks generally want to go). I have found the
> service much more responsive, the quality superior, and the price
> significantly less - at least in our neck of the woods. This kind of
> technology is commonly used in support of county recording functions, so
> it is relatively wide spread.
>
> Also, recognize that the microfilm you may generate does not necessarily
> need to meet standards designed for 500 year security film. If you are
> only going to keep it for less than 100 years, you can look at options
> such as thin film; you can also make some compromises regarding density,
> resolution, etc... The latter helps when you are generating microfilm
> from job control language or other type of data stream as opposed to an
> actual image file. The reports may not meet the standards of long range
> microfilm, or may require extensive reprogramming to meet those
> standards, but they may be good enough for shorter term backup purposes.
> This also can help keep costs down.
>
> Dwight Wallis, CRM
> Records Administrator
> Multnomah County Records Management Program
> 1620 SE 190th Avenue
> Gresham, OR 97233
> phone: (503)988-3741
> fax: (503)988-3754
> [log in to unmask]
>
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