On Tue, 21 Oct 2003, Alexander Priem wrote: > The machine is going to be used for a pretty large database (well over 100 > tables with some of them containing over a million records from the start, > number of tables and records will grow (much?) larger in the future). This > database is going to be used by a pretty large number of employees. The > number of concurrent users will vary between 1 - 100 or so, depending on the > time of day etc. This will be a database containing client and supplier data > as well as product descriptions and prices/ingredients/labels/brands etc. > Database use will include lots of SELECTS but also lots of INSERTS/UPDATES, > i.e. the database will be pretty active during bussiness hours... > > I think you (Scott and Will) are right when you say that NAS devices are not > ideal for this kind of thing. I have been thinking about the hardware > configuration for this machine for some time now (and had a lot of hints > through this list already) and decided to go for a SCSI RAID config after > all. The extra costs will be worth it :) > > The machine I have in mind now is like this : > > Dell PowerEdge 1750 machine with Intel Xeon CPU at 3 GHz and 4 GB of RAM. > This machine will contain a PERC4/Di RAID controller with 128MB of battery > backed cache memory. The O/S and logfiles will be placed on a RAID-1 setup > of two 36Gb SCSI-U320 drives (15.000rpm). Database data will be placed on a > Dell PowerVault 220S rack-module containing six 36Gb SCSI-U320 drives > (15.000rpm) in a RAID-10 setup. This PowerVault will be connected to the DB > server via a SCSI cable...
Funny, we're looking at the same basic type of system here, but with a Perc3/CI controller. We have a local supplier who gives us machines with a 3 year warranty and looks to be $1,000 to $2,000 lower than the Dell. We're just going to run two 73 Gig drives in a RAID1 to start with, with battery backed RAM. So that brings up my question, which is better, the Perc4 or Perc3 controllers, and what's the difference between them? I find Dell's tendency to hide other people's hardware behind their own model numbers mildly bothersome, as it makes it hard to comparison shop. ---------------------------(end of broadcast)--------------------------- TIP 4: Don't 'kill -9' the postmaster
