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Have you been impacted by application versioning or OS upgrades? I don't mean for this to sound like an interview, I have just experienced first-hand issues (most recently Retrospect 5 and OS-X 10.4 for a client). John John Spencer www.bridgemediasolutions.com On Jun 9, 2005, at 8:26 PM, Ken Hansen wrote: > We were using Retrospect software. > > On Jun 9, 2005, at 9:10 PM, John Spencer wrote: > > >> Ken, >> >> were you using a specific software backup application, or using >> Windows generic backup utility, or a TAR archive? >> >> John >> >> John Spencer >> www.bridgemediasolutions.com >> >> >> On Jun 9, 2005, at 7:46 PM, Ken Hansen wrote: >> >> >>> I also would never trust DATA backup for longer than 5 years. >>> The past two places I worked I found this out the hard way. >>> Trying to restore 5 and 8 years old data respectively yielded >>> horrible >>> results. >>> We then implemented a policy to have all Data tapes checked and re >>> backed up to new AIT tapes with the understanding that those tapes >>> would then be checked in 5 years time. >>> >>> -Ken >>> >>> On Jun 9, 2005, at 3:47 PM, John Spencer wrote: >>> >>> >>> >>>> This is an incorrect statement. There are various backup >>>> applications that will skip a bad block of data and continue the >>>> restore process, as well as applications that will report on the >>>> quality of the data archive as it is being written. Error >>>> correction >>>> is not a function of the data storage tape itself. >>>> >>>> And I would never trust a data storage tape to be readable 25-30 >>>> years from now. >>>> >>>> John >>>> John Spencer >>>> www.bridgemediasolutions.com >>>> >>>> >>>> On Jun 9, 2005, at 2:36 PM, Jeffrey Kane wrote: >>>> >>>> >>>> >>>>> I've seen the figure 25-30 years bandied about for data tape. Data >>>>> backups >>>>> are a double edge sword. They have better error correction so the >>>>> data is >>>>> more resilient. However, if there's an unrecoverable error it >>>>> renders ALL >>>>> data for that particular file (and if it's in the directory area, >>>>> all data >>>>> on the tape) unrecoverable. With digital audio tape the error only >>>>> affects >>>>> that portion of the recording. >>>>> >>>>> >>>>> >>>> >>>> >>>> >>> >>> >>> >> >> > >