If the hardware isn't up to the job, well, it isn't up to the job. Getting a whole pile of RAM to improve caching might help, depending on how the web content is generated (ie, is it static or dynamic?). Splitting the load over 2 IDE disks will also help. You could try the O'Reilly Apache book for more performance tweaks. SCSI is important on SMP machines: if you have twice the number of processes using the disk simultaneously, you need twice the bandwidth on your disk channel. SCSI is the answer. The only way to find out is to try. IDE drives are very cheap and you'll always have a use for a spare one somewhere if you do need the SCSI route.
I wanna use dual CPU(PII 350 or 400), 128MB Ram and 13GB Harddisk for my Web Server. But I scare that the Web Server can't be serviced for co-current 100 users. I guess the bottleneck will be exist on IDE controller. I haven't enough money to buy U2W SCSI Controller and Harddisk.
Can anyone give me some suggestion ?
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