Keywords: DataAccWG

Hello,

In our current disk storage estimates we are assuming we will need
disk space for 2 most recent releases and unreleased catalog.
But what about the disk space for older releases that some people might
want to stage in from tape? That is not included in the estimates.
How much should we reserve for that? Equivalent of size of the most recent release?

BTW, if we end up being limited by disk IO and not space, we will
get that "space for free" anyway, BUT... it is important to get
an idea how much disk space we will need because disk io pushes us
towards smaller disks (which are faster, have better seek time),
so we can end up in a situation where required number of
small disks does not give us enough disk space (I went through
the numbers with Don and that can happen). I'm in the process
of building a model for that.


Jacek
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