Pinnacle pisze:
Anybody read the Mainframe Executive article on the death of tape as a
backup media? The guy writing it used to work for STK and Sun, and now
works for disk-based backup vendors. He says the following:
- 15% of all backups fail (my experience < 1%)
- 10-50% of all restores from tape fail (my experience <1%)
- 40-50% failure when restoring data from tape > 5 years (my experience
again is <1%)
So what are you guys seeing out there? Do we really have mainframe tape
failure rates in the double-digits percentwise? If we do, then the guy
is right and tape is dead, but I just don't buy those figures. What say
you?
Explanatory question: what does he sell now?
BTW: My experience is much closer to your than presented in article
(that means: MUCH LESS than 1%). However I use tape mirroring for
production data. Did he mention such possibility? <vbg> What about disk
based solutions - don't they require any redundancy?
BTW: tape mirroring solves both problems: media failure and DR.
--
Radoslaw Skorupka
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BRE Bank SA
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