Choosing drives, transfert rate or IO/sec?

Hi,
what is most important to focus on when we choose a drive setup to support a
small datawarehouse?
(10GB and less)
IO/Sec
or
MB/s
?
(same question regarding the tempdb database storage)
except the SQLIO and SQLIOStress, there is any testing tool which simulate
DW loading process & DW query process?
thanks.
Jerome.
"Jj" <willgart@.BBBhotmailAAA.com> wrote in message
news:uPa1X68wFHA.1148@.TK2MSFTNGP11.phx.gbl...
> Hi,
> what is most important to focus on when we choose a drive setup to support
> a small datawarehouse?
> (10GB and less)
> IO/Sec
> or
> MB/s
> ?
> (same question regarding the tempdb database storage)
>
Write throughput.
For a small datawarehouse, your memory cache should be a large percentage of
your database size. So for physical IO, sequential write operations (like
the log file and checkpointing) will predominate.
David
|||Hi Jerome,
for 10GB or less of data....design a reasonable model and throw a bit
more hardware at it if it is not going ok......the time and money it
will cost to think about how to tune it is more than the cost of the
HW/SW to run it....
Of course, this kind of advice does NOT apply to large DWs where we do
spend time considering the performance in some great detail..
Best Regards
Peter Nolan
www.peternolan.com