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Bryan and Cory, 
Thank you for your insights. My colleague Ed Busch and I will be
participating on the call next Tuesday, and this would be a good question
to bring up at that time as well.

Lisa

____________________________________________________

Lisa M. Schmidt
Electronic Records Archivist
University Archives & Historical Collections
888 Wilson Road
Room 101 , Conrad Hall
Michigan State University
East Lansing, MI  48824

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1-517-884-6441 





On 2/20/13 2:00 PM, "Cory Snavely" <[log in to unmask]> wrote:

>I'd second all that stuff Bryan is saying, and I'd also draw the
>parallel between cloud storage and Fedora storage (or any "internal"
>storage) in that they all require somewhat the same level of trust
>investment as to the integrity of the data; that is, you're not
>verifying the integrity yourself. Like I said, though, Thorny will
>probably have a perspective on that.
>
>On 02/20/2013 01:51 PM, Bryan Beecher wrote:
>> At ICPSR we've wrestled with this question over the past 3-4 years.
>>Here
>> is my take.
>>
>> The pro for storing objects outside of a specific repository technology
>> (e.g., like a filesystem) is that it makes it easy to bring file
>>management
>> tools to bear on problems, and to inject content into many disparate
>> storage architectures.  For example, we can use simple tools like md5sum
>> and rsync to check fixity and to move content, respectively.  And we can
>> move content from filesystem-type storage to other filesystems (we have
>>a
>> copy at MATRIX @ MSU, for example), clouds (like DuraCloud or AWS S3
>> directly), or specialized storage platforms (like the SAFE Archive
>>operated
>> by Data-PASS).
>>
>> The con for storing objects outside of something like Fedora is that it
>> forces one to ensure that the proper preservation metadata exist, and
>>are
>> stored in some reasonable fashion so that they can be accessed easily
>>(say,
>> by fixity checkers) and are durable across changes in tech and policy.
>>If
>> one is using special-purpose preservation technology like Fedora, my
>>sense
>> is that one gets this as part of the solution.
>>
>>      -- bryan
>>
>>
>> On Wed, Feb 20, 2013 at 10:54 AM, Schmidt, Lisa
>>(lschmidt)<[log in to unmask]
>>> wrote:
>>
>>> At the Michigan State University Archives, we are wrestling with the
>>> question of where to store digital objects/AIPs: within our Fedora
>>> repository, or externally.
>>>
>>> What are the pros and cons of each approach?
>>>
>>> We have external storage available on an IX Systems storage device, and
>>> have been planning to use it for archival storage of AIPs with
>>>pointers in
>>> the Fedora repository; it would be synched to a second IX storage
>>>device
>>> that would function as our dark archive. We want to do our due
>>>diligence,
>>> however, to ensure that this is the right approach.
>>>
>>> Thank you,
>>> Lisa
>>> ____________________________________________________
>>>
>>> Lisa M. Schmidt
>>> Electronic Records Archivist
>>> University Archives&  Historical Collections
>>> 888 Wilson Road
>>> Room 101 , Conrad Hall
>>> Michigan State University
>>> East Lansing, MI  48824
>>>
>>> [log in to unmask]
>>> 1-517-884-6441
>>>
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