I would add one very strong recommendation - It might make the numbers less attractive, but if you're considering a move to RAC then you absolutely should plan for a minimum of two cluster databases - one for testing/development and one for production. It's a really bad idea to plan on testing only with non-RAC systems. Make sure to include that in your hardware planning. Also consider licensing. -Jeremy Andrew Kerber wrote: > Dont forget about redundant storage connections on each server. > > > > On Sun, Jul 18, 2010 at 11:58 PM, Harel Safra <harel.safra@xxxxxxxxx > <mailto:harel.safra@xxxxxxxxx>> wrote: > > A RAC setup will need the following elements: > > · External storage device to hold database files and > present the same LUNs to the RAC servers. This can be quite costly > if you don't have a SAN/NAS in place. > > · Storage network – Fiber Channel for SAN or Ethernet for > NFS/ISCSI. > > · Public network for the servers to talk to users. > > · Redundant interconnect network – if this network fails > node will crash themselves. > > · Servers with the CPU and memory sizing you determine, > public NICs, interconnect NICs, HBAs if you're using SAN storage > or storage NICs if your using NFS/ISCSI. > > > > Your hardware vendor could supply the pricing for these elements. > The pricing varies according to your companies' bargaining power. > > > > Harel Safra > > > > *From:* oracle-l-bounce@xxxxxxxxxxxxx > <mailto:oracle-l-bounce@xxxxxxxxxxxxx> > [mailto:oracle-l-bounce@xxxxxxxxxxxxx > <mailto:oracle-l-bounce@xxxxxxxxxxxxx>] *On Behalf Of *Venkat P > *Sent:* Monday, July 19, 2010 7:16 AM > *To:* oracle-l@xxxxxxxxxxxxx <mailto:oracle-l@xxxxxxxxxxxxx> > *Subject:* RAC h/w basic costs > > > > Hello All, > > We are planning to move to RAC from single node database, as a > start we want to migrate to 2 node RAC and ASM. Management asked > us to present basic starting costs involved so that it helps in > the decision making process. We already have some servers in > place, we might require SAN, HBAs and hardware for constituting > interconnect(NICs/Switches etc) . I am not sure where to start, It > would be great if anyone had similar experiences and can share > accross. We have evaluated Oracle licensing costs, am only > looking for the above said h/w costs. Below are details of our > environment, I can provide more details if required. > > Database version: 11.2 > Size: 500G > OS: RHEL 4 > Servers: Dell servers with 2 Xeon Quad core CPUs. > Type: R12 ERP database > > Thanks in advance, > Venkat. > -- http://www.ardentperf.com +1 312-725-9249 Jeremy Schneider Chicago