Jeremy,

 

Ross Spencer of Archives New Zealand (and formerly a colleague of mine here) looked at this a little a few years ago http://openpreservation.org/blog/2013/06/12/mia-metadata/ - I don't know if he's done any more since.  It looks like there should be some comments on that blog post which are hiding themselves too.

 

--

David Underdown - [log in to unmask]

Senior Digital Archivist, Digital Preservation

+44 (0)20 3908 9228

The National Archives, Kew, Richmond, Surrey TW9 4DU
http://www.nationalarchives.gov.uk

 

 

From: Digital-Preservation Announcement and Information List [mailto:[log in to unmask]] On Behalf Of Jeremy Nottle - Strike X Services
Sent: 17 August 2017 03:52
To: [log in to unmask]
Subject: Preservation of Alternate Data Streams or Named Streams and detecting/preventing their (accidental) loss

 

Dear All,

I'm new to this list but was advised it would be a good place to track down any resources around the issue of hidden named streams (mac) or alternate data streams (windows).

My experience would suggest it can be quite easy to "lose" these hidden streams if not taking due care during network or direct transfers and the capabilities of the destination filesystem (or for that matter the tool used for a file copy)

The amount of "useful" data I am coming across in these hidden streams still seems fairly limited, however I am finding some software has started utilising them to store quite a bit of additional useful metadata.

I have as yet only had a chance to do very limited testing - but for example when running a checksum on a file I have not been able to detect changes in the hidden streams or when these have been lost - presumably because the checksum utility is just looking at the main data stream (or I am using the wrong checksum tool - which is quite possible!).

So - I'm really just curious if anyone else has been looking at this? Or is this something that has been considered in the past and is just a non-issue in standard cross-platform worklows?

Any thoughts welcome!

 

Kind regards,

Jeremy Nottle

Strike X Services

 

+61 418941381 ||  PO Box 176 Mount Hawthorn Western Australia 6915

 


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