Re: SUMMARY A5200 Disk Array

Thanks to all who replied.Here is my original post:I have an E450 with a
A5200 disk array which has 10 disk drivesof 18GB each.I'm running Solaris
7 and Veritas Volume Manager 3.1.1.I want to add 4 disks of 36GB to the
A5200.Is this possible, will I run into any problem having both 18GB and
36GBdisks on the A5200?Also I noticed that the existing disks are not
located continuously in
theA5200 right now. Is there any rule to follow for the location of thedisks
in the A5200 array? Any web site or document where I can findthis
information? Here are the replies:
From: "Haywood, Steven" 
shaywood@hurricaneseye.comHiNot sure about the 36 gig thing (I'm likely
to find out though in a week or
two when my new 36's arrive) ;)As to the drive placement, yes there are
rules. The following bays NEED to
be occupied:
slots 0,5,10 in the front and 0,3,6,10 in the rear MUST have drives.This
comes direct from a Sun techie who inspected my kit :)Hope this helpsCheers
Steven================================From: Jay Lessert
It is possible, and should not cause any problems.  I'm doing this
with my A5200 right now (10x18GB and 12x36GB).> Also I noticed that the
existing disks are not located continuously in the
> A5200 right now. Is there any rule to follow for the location of the
> disks in the A5200 array?Hmmm, I don't know if there are official
recommendations or not.  I've
always tried to spread the heat load and weight out evenly, that seems
like a good idea.> Any web site or document where I can find
> this information?You can try http://sunsolve.sun.com/handbook_pub/.================================From:
mike@cluon.priv.at (Thomas 'Mike' Michlmayr) [...]
> Is this possible, will I run into any problem having both 18GB and 36GB
> disks on the A5200?i have this running, plus several 9 GB disks.> Also
I noticed that the existing disks are not located continuously in
> the A5200 right now. Is there any rule to follow for the location of
the
> disks in the A5200 array? Any web site or document where I can find
> this information?there actually is a document on sunsolve that
describes the minimum
installed disks (4 in the front, 5 in the back, in specific slots IIRC).
but, if your A5200 is working flawlessly, you most likely have a working
config. when i reconfigured ours (which only had 6 disks, all in the
front),
we ran into troubles really fast. if you have the required slots
occupied,
the rest can be placed in whatever order you prefer.
=====================================From: John Stoffel 
stoffel@lucent.comThere are no rules that I'm aware of, just stuff the
new disks in,
run:   drvconfig
   devlinks
   disks
   vxdiskadmAnd initialize the new disks.  I'd suggest that you put them
into
their own volume(s) for your sanity.  But it really depends on your
existing layout.John

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