On 09/06/05, William Yu ([EMAIL PROTECTED]) wrote: > Rory Campbell-Lange wrote:
> > ... Some have suggested that a single dual core processor is the way > > to go. The RAM needs to fit the CPU arrangement too; William points > > out that one needs 2 DIMMS per CPU. > Your summary here just pointed out the obvious to me. Start with a 2P MB > but only populate a single DC Opteron. That'll give you 2P system with > room to expand to 4P in the future. Plus you only need to populate 1 > memory bank so you can do 2x1GB. That makes sense. I should by a board with support for 2 Dual-core Opterons, but only use one Opteron for the moment. Then I should buy 2x1GB RAM sticks to service that processor. > > ... On a four-slot 1U server, would one do a single RAID10 over 4 > > disks 10000rpm U320 disks? I would run the database in its own > > partition, separate from the rest of the OS, possible on LVM. An > > LSI-Megaraid-2 appears to be the card of choice. > > With only 4 disks, a MegaRAID U320-1 is good enough. It's quite a > premium to go to the 2x channel MegaRAID. With 4 drives, I'd still do 2 > big drives mirrored for the DB partition and 2 small drives for OS+WAL. Should these all RAID1? I'm a bit worried about how to partition up my system if it is strictly divided between a system RAID1 disk entity and a DB disk entity, as the proportion of web server content (images, movies, sounds) to actual database data is an unknown quantity at the moment. I typically keep all the database stuff in a /var logical partition and for this project would expect to keep the web stuff under a /web logical partition. I was thinking of using LVM to be able to shift around space on a large (4 x 147GB RAID 1 or RAID10) raided volume. I appreciate that this may not be optimal for the WAL transaction log. Thanks for your comments; Rory -- Rory Campbell-Lange <[EMAIL PROTECTED]> <www.campbell-lange.net> ---------------------------(end of broadcast)--------------------------- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq