Chuck, You can say "2GB" or "3GB", but unless you're using a 64-bit CPU (I think they all are, now) and a 64-bit O/S (which XP professional is not), you can't effectively use more than 3GB, even though the box will probably address 4GB (or even more) happily. A 32-bit O/S like Windows uses a 4GB address space, but the 'top' 1GB of the address space is reserved for the O/S itself. I think you can buy "XP Pro 64-bit Edition", which would address as much RAM as you can stuff into the box, but I doubt it would buy you much extra throughput. Be a fun bench-mark, though!
Two dual-core, CPUs would probably give you less memory contention than one quad-core. I'd configure the disks as one mirror pair for the O/S, UV software etc (C:\ drive), and another mirror pair, or RAID-5 set, for your data (D:\ drive). If you're using UV transaction logging, put that on a third set of disks (E:\ drive). Buy the fastest disks you can get (15,000 rpm), put them on the fastest hardware RAID controllers on the fastest I/O channels (PCI-X) you can configure, and install as much battery-backed cache on the controllers as you can. You say the SQL servers are on a 'slow' network. Any chance of setting up another network segment with Gigabit LAN cards and a cheap GB switch, just for this work? HTH Mike > -----Original Message----- > From: [EMAIL PROTECTED] Behalf Of Charles Barouch > Sent: Monday, March 12, 2007 2:57 PM > To: u2-users@listserver.u2ug.org > Subject: Re: [U2] How much RAM is too much > [snip] > The thing is, I can say "2GB" memory or "4GB" memory, > but I can't say 'a lot'. I need to know if there is an upper > limit after which the system stops benefiting from more money > being thrown at it. > > - Chuck "64K" Barouch The information contained in this Internet Email message is intended for the addressee only and may contain privileged information, but not necessarily the official views or opinions of the New Zealand Defence Force. If you are not the intended recipient you must not use, disclose, copy or distribute this message or the information in it. If you have received this message in error, please Email or telephone the sender immediately. ------- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/
