On Sat, 28 Mar 2009, Michael Shadle wrote:
if i went raidz2 i'd want the entire 14 disk array in it i think.
i'd rather not do a raidz2 with less than 100% of the disks and then a
second raidz1 (or 2) because i'd wind up losing much more disk space.
essentially, i am willing to give up 2 of 14 disks (roughly of course)
to parity.
Hopefully you consider all of the costs before making this sort of
decision. If you are a lousy tipper you can't expect very good
service the next time you come to visit. :-)
If 14 disks cost a "lot", then you should carefully balance the cost
of the "wasted" disk against the cost of lost performance or the cost
of lost availability. In many business environments, the potential
for lost availability more than justifies purchasing more "wasted"
disk. In many business environments, the potential for lousy
performance more than justifies purchasing more "wasted" disk. Any
good businessman should be able to specify a "dollars per hour" cost
to the business if the storage is not available, or unable to provide
sufficient performance to meet business needs.
Bob
--
Bob Friesenhahn
bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
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