Re: share a new 11gR2 feature
- From: Nuno Souto <dbvision@xxxxxxxxxxxx>
- Date: Sat, 05 Sep 2009 10:59:35 +1000
Matthew Zito wrote,on my timestamp of 5/09/2009 2:05 AM:
This would, indeed, be a useful feature if anyone these days actually
ran their data on physical disks.
Er..... Are you sure you mean that? What should they use then? Tapes?
With today's world of wide-striping,
massive array caches, write re-ordering, and storage virtualization, I
doubt it will make much difference.
Sorry Mathew, but you got to be joking. What's that got to do with gigabytes of
allocated space that never is used? And what exactly is an "array cache" and
what has that got to do with persistent, unused storage?
"Virtualized" storage? In what way does that change the fact that storage
space, in whatever format it may take - virtual or not - is being used for
absolutely nothing? Last time I looked virtual is not a synonym for free: it
still has to be paid for. Use it to store nothing and you are essentially
wasting money. I can show you numerous examples, in fact just about any
corporation, where such activity would be frowned upon.
It IS very interesting, though, for the argument that Oracle is gonna
continue arguing that you can just buy lots of JBOD arrays and do data
resiliency in software, rather than investing in enterprise storage.
I don't think so. Data resiliency is for data, hence the name. This is for
absence of data, a totally different proposition.
--
Cheers
Nuno Souto
in sunny Sydney, Australia
dbvision@xxxxxxxxxxxx
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