NAS Backup Failed Need Advice ATI 2011

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I have many backkups on a Segate NAS (8TB) and can not open any of them; they are corrupt. They wre originally made on hard drives then transfered to the NAS. This led me to ask about network file transfers and what I read was very distrubing. I found that the TCP/IP protocol does not do any error checking on the payload or data and only checks the IP header. Further I found a conservative error estimate of 1:10GB. My backups are 100-300GB. That means many lost bits.
So what I wonder is:
1. Is the above stuff true?
2. Should NAS be avoided in favor of local hard drives for backup storage?
3. Is there any tool that will allow me to open and scavange files from a corrupt ATI 2011 tib file?
4. Doesl ATI 2011 support/open tib made with 09?

Thanks, I am very screwed as my last five years of backups went to the 8TB NAS and all are unreadable.
I believe that the files did not transfer correctly and I did not use MD5 or similar checks after the transfer. Oh yea, and my 500GB files disk failed.
Steve

ven 17/02/2012 - 15:29
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mvp

Steven,

When you copy a TIB file, always validate the copy. Whether you copy to the same disk, another disk, a DVD, a network share. ATI embedds checksums in the file to ensure its integrity. The slightest change in the bytes and your archive is corrupted.

If validation fails, try to copy the file back. Sometimes the validation can fail for another reason. If the validation fails from windows after the copy back, try to validate from the CD. If all validations fails, try to validate the file on another computer. Sometimes, validation fails because of computer hardware. IF everything fails, your TIB is most likely corrupted and you cannot do anything to fix it.

If the validation passes and the restore fails, copy the TIB file on an external USB disk. Validate again the copy. If validation passes, restore from the recovery CD. The restore should work at this point.

sam 18/02/2012 - 23:16
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