fre 2006-06-09 klockan 19:01 +0200 skrev Pasi Pekka Leinonen: > How does RAID slows down the disks speed if I have e.g. 4 pcs WD > Raptor 10000rpm 74Gb on hardware or software RAID? Or is it realy > better to have 4 pcs WD Raptor 10000rpm without RAID? Or is the gain > from RAID so little it's not worth it? There is no RAID which will beat the performance of a setup using equal number of separate spindles without RAID. > What would be the best amount of storage to cache 300 user network. How many HTTP requests / second? > which is most important when not using RAID: The amount of disk space > or the amount of disks. amount of disks. Seek time is the main bottleneck for Squid disk I/O. Main contributors to that is the randomness of cache hits and the purging of old data when the cache is full.. Regards Henrik
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