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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. >>>> >>>> >>> >>> >> >> >