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
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.
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 Spencer
> 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
>> 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
>> that portion of the recording.