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I would add the following high-level technical questions, keeping in mind our goal of identifying emerging and best practices WRT the use of storage technologies: * 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) * 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) * Are there tough requirements for digital preservation, e.g. TRAC certification, that you wish were more readily handled by your storage system? On 03/18/2011 12:28 PM, Michael J. Giarlo wrote: > On 03/17/2011 04:47 PM, Owens, Trevor wrote: >> >> ==Questions for Member Implementers== >> > > If the goal for the survey is to keep it short and sweet, I would like > to see a question added to gauge if the surveyee would be interested in > a follow-up survey where more in-depth questions are asked. I have a > number of nitty-gritty questions I'd like to see answered in such a > follow-up survey: > > * What type of storage do you use (NAS, SAN, DAS, etc.)? > > * What sort of disks (type& speed: SATA, 7200 RPM) do you use? > > * What's the size of your environment, and how have you carved it up? > > * What filesystems do you use? > > * What other file systems did you consider, and why did you go with > the one you did? (was it because of type of data stored: size of object > - large vs many small, familiarity w/ FS, etc.) > > * What tiers of storage do you have& how have you determined them > (via characteristics like disk speed, RAID level, etc)? > > * Do you have classifications of data? If so, how do they map to > different tiers of storage and backup methods? > > * Are you using HSM? What vendor? How have you implemented this > (policies)? > > * How are you using striping, mirroring, and virtualization? > > * How are you handling replication? > > * How do you handle backups of large-scale storage (what's the backup > window; how often are you doing fulls vs. diffs/incs; what's your > retention policy for off-site/DR copies; are backups to tape, disk, or > both; etc.)? > > * What would you change about your storage config/architecture if you > had to do it all over again? > > -Mike > > ############################ > > To unsubscribe from the NDSA-INFRASTRUCTURE list: > write to: mailto:[log in to unmask] > or click the following link: > http://list.digitalpreservation.gov/SCRIPTS/WA-DIGITAL.EXE?SUBED1=NDSA-INFRASTRUCTURE&A=1 ############################ To unsubscribe from the NDSA-INFRASTRUCTURE list: write to: mailto:[log in to unmask] or click the following link: http://list.digitalpreservation.gov/SCRIPTS/WA-DIGITAL.EXE?SUBED1=NDSA-INFRASTRUCTURE&A=1