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If this is similar to the IBM Virtual Tape Sub-system, then there is more than just disk. The disk acts as a cache for real tape. If the cache reaches a certain high-water mark, then physcal tapes are created.
Your back-up software on your server may catalog a tape and create back-up files to it. Typically, this action does not fill a physical tape out 100%. The virtual tape server can guarentee full physical tape usage.
Tape retention is done against the virtual tapes. This saves hours per week of operator (i.e. human) intervention in tape handling.
If you are backing up a big SAN, multiple 3Gb/s Fiber Channels are a must. This makes copying to virtual tape as fast as disk writing.
Norm
DB2 DBA - Posted by: Norm_z Posted on: 04/04/04 You are currently: a Guest | Members login | Terms of Use
New technology emulating outdated technology
toadlife | 04/04/04
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no kiding, tapes are dead
V Sanders | 04/04/04
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Tape technology is FAR from dead
Enterprise Analyst | 04/04/04
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Tapes are not necessary, but may be preferred
Mack DaNife | 04/05/04
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maintain integrity
BarbarianHorde | 04/05/04
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And what else would you use?
Patrick Jones | 04/05/04
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32TB for $450,000???
Mace Moneta | 04/04/04
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More than just disk...
Norm_z | 04/04/04
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these must be same companies sell over priced tapes
V Sanders | 04/04/04
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Some of what you are missing
Mack DaNife | 04/05/04
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tapes cost to much for what you get
V Sanders | 04/04/04
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be cheaper to buy
V Sanders | 04/04/04
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What about VTS systems
Enterprise Analyst | 04/04/04
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Message has been deleted.
do not use linuxcad | 04/05/04
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What do you think?
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