Dear all,
We are currently investigating long term storage of colour images in our EDRMS and the potential storage implications.
Storing the raw TIFF files for the required 7 year retention period has been rejected due to the large amount of storage space required, and we have been pointed towards both the LZW compression algorithm and/or storage as PNG files instead.
I would be very grateful for any comments/suggestions on both the use of LZW compression and PNG's for long term storage in terms of legal admissibility. I have looked at the Code of Practice for Legal Admissibility but it doesn't go into much detail about compression specifically.
I would be more than happy to summarise responses to the list.
Many thanks.
Louise
Assistant Archivist
Library and Museum of Freemasonry
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