Alex Stapleton wrote:
Your going to have to factor in the increased failure rate in your cost
measurements, including any downtime or performance degradation whilst
rebuilding parts of your RAID array. It depends on how long your
planning for this system to be operational as well of course.
If we go 32xRAID10, rebuild time should be the same as rebuild time in a
4xRAID10 system. Only the hard drive that was replaced needs rebuild --
not the entire array.
And yes, definitely need a bunch of drives lying around as spares.
---------------------------(end of broadcast)---------------------------
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
