I currently have one production 7133D40, sixteen 9g drives, defined as
two raid5 arrays, each covered by a hot spare, being shared by to
H70's in an HA environment. On each box, one array is cabled to loop
A and the second array is cabled to loop B of the same adapter. I
also have a second ssa adapter in each box, on which only the failover
box is using loop B for a 7133 full drawer being used in a testing
environment. This means loop A is open on the second adapter in the
failover box and both loops are open on the second adapter in primary
box. I need to add disk space and am looking at another 7133D40 full
of 36g drives and defined as two raid5 arrays. I'm not sure about
cabling this drawer as far as performance goes. Does it hurt to have
one drawer of 9g drives and another of 36g drives? Would there be a
noticeable performance hit if I add the new 7133 to the same adapter
loops as the original drawer? Should I use the available loopA on my
second adapter to cover the entire new drawer? Should I use two loops
on the first adapter to cover the 36g drawer and loopA onthe second
adapter to cover the original 9g drawer? Or does it even make a
difference with this number of drives?