Ilker Gokhan wrote: > Prefer SCSI disk instead of IDE disk (don't use RAID5 as well) If you > have chance.
Modern IDE drives works quite well. With 4 IDE drives properly configured for best performance you will quite likely run into other limitations than disk I/O with Squid.. But RAID2-5 for the cache drives with only 4 drives in 1 set will almost certainly cause I/O bottlenecks unless most of your traffic consists of large objects or rarely changes. This is due to the ECC calculation involving all drives on each write, very effectively limiting the awailable bandwidth for small random writes to one drive. There is a lot of small random writes in normal web caching as the median object is small and usually fits in one or two blocks, plus filesystem metadata in two or three additional random blocks.. Regards Henrik
