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NDSA-INFRASTRUCTURE  April 2011, Week 1

NDSA-INFRASTRUCTURE April 2011, Week 1

Subject:

Re: Wiki Organization of Scale/Cloud Storage Responses

From:

"Johnston, Leslie" <[log in to unmask]>

Reply-To:

The NDSA infrastructure working group list <[log in to unmask]>

Date:

Mon, 4 Apr 2011 17:57:24 -0400

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (104 lines)

It looks like my iRODS notes were mislinked - they're available now.

Leslie

-----Original Message-----
From: The NDSA infrastructure working group list [mailto:[log in to unmask]] On Behalf Of Karen Cariani
Sent: Monday, April 04, 2011 2:35 PM
To: [log in to unmask]
Subject: Re: [NDSA-INFRASTRUCTURE] Wiki Organization of Scale/Cloud Storage Responses

Hi Andrew,

I think these responses are from my notes during the presentation.  Thanks to Trevor, they are more intelligible!  I didn't have notes for the iRods presentation.  Did anyone else take notes of their responses to the questions?  If not we can ask them to send them via e-mail.

We do need to solicit responses from the WG members as per our last phone call.  Perhaps if we all try to answer the questions as to what our own institution is doing before our next call on April 13 at 1:00?  And either write them into the wiki yourself or send the answers via e-mail.

Here they are:
Questions for Member Institution Implementations of Large Scale Storage Architectures

 1.  What is the particular preservation goal or challenge you need to accomplish? (for example, re-use, public access, internal access, legal mandate, etc.)  2.  What large scale storage or cloud technologies are you using to meet that challenge? Further, which service providers or tools did you consider and how did you make your choice?
 3.  Specifically, what kind of materials are you preserving (text, data sets, images, moving images, web pages, etc.)  4.  How big is your collection? (In terms of number of objects and storage space required)  5.  What are your performance requirements?

 6.  What storage media have you elected to use? (Disk, Tape, etc)  7.  What do you think the key advantages of the system you use?
 8.  What do you think are the key problems or disadvantages your system present?
 9.  What important principles informed your decision about the particular tool or service you chose to use?
 10. How frequently do you migrate from one system to another?
 11. What characteristics of the storage system(s) you use do you feel are particularly well-suited to long-term digital preservation? (High levels of redundancy/resiliency, internal checksumming capabilities, automated tape refresh, etc)  12. What functionality or processes have you developed to augment your storage systems in order to meet preservation goals? (Periodic checksum validation, limited human access or novel use of permissions schemes)  13. Are there tough requirements for digital preservation, e.g. TRAC certification, that you wish were more readily handled by your storage system?

Karen

On 4/4/11 1:09 PM, "Andrew Woods" <[log in to unmask]> wrote:

Hello All,
It looks like we have responses from DuraCloud and MetaArchive linked off of the Cloud Presentations wiki page:
http://www.loc.gov/extranet/wiki/osi/ndiip/ndsa/index.php?title=Cloud_Presentations#Solution_Models_and_Environments

It would be great to also collect responses from iRODS (R.Moore?
M.Smorul?) as well as from the members of this group who have other large-scale storage implementations at their own institutions.
In the meantime, is there any interest in teasing out the details behind the posted responses or discussing the advantages/concerns of the solutions seen thus far?

Andrew

On Thu, Mar 24, 2011 at 11:32 AM, Owens, Trevor <[log in to unmask]> wrote:
> Thanks Andrew!
>
> I think having individual pages for each service provider and 
> implementer's responses to questions is the right way to go. I checked 
> the settings and it looks like everyone in the group should be able to 
> create pages. Andrew, if you are still having trouble with this feel 
> free to send me an email off list with the error message or response 
> you are getting and we can sort this out. To keep things moving I 
> created a stub that you can start filling in. 
> http://www.loc.gov/extranet/wiki/osi/ndiip/ndsa/index.php?title=DuraCl
> oud
>
> I agree that getting text responses to our questions from past and future presenters and keeping them on the wiki is a great idea. That will help us in composing a report, but I also think the bulk set of answers to these questions could be an interesting work product in and of itself. In that case we just need to all think a little bit more about the answers to the questions. If we are happy with both sets of questions we can probably start thinking about getting these filled out.
>
> So any more comments on the questions? Or do we think we have most of what we want in here.
> http://www.loc.gov/extranet/wiki/osi/ndiip/ndsa/index.php?title=Cloud_
> Presentations
>
> Best,
> Trevor
>
>
> -----Original Message-----
> From: Andrew Woods [mailto:[log in to unmask]]
> Sent: Thursday, March 24, 2011 10:24 AM
> To: Owens, Trevor
> Cc: The NDSA infrastructure working group list
> Subject: Wiki Organization of Scale/Cloud Storage Responses
>
> Hello Trevor and Team,
> To start with, I have a minor wiki-related question regarding content organization. I was in the process of pushing the data dump of responses to the presentation questions from a DuraCloud perspective onto the wiki. Logically, it makes sense to me to have the bloat of responses and comments for each presentation on individual sub-pages of the wiki. Then we can distill the salient points up to the current page as tables, condensed lists, etc. It seems, however, that the ability to create sub-pages has been disabled. If the approach is reasonable, could you help enable that capability?
>
> Secondly, in order to increase the benefit of the past and future presentations as well as the direct experiences of member institutions' large-scale storage implementations, I support the idea of collecting direct and detailed responses to the questions on the wiki from the presenters/institutions themselves. We can then continue with a concrete dialog/debate on the mailing list over the responses in an attempt to narrow in on practices and recommendations.
>
> Of course this is predicated on the agreement of pertinent questions from the other thread on this list.
>
> Thanks,
> Andrew
>

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