This is more of an OS question in the general sense. Anything that can speed up the drive operations is surely to have a positive impact on the applications. My understand of this (from a friend) is that it is possible that an application could be slower under non-ideal circumstances. That is, this drive now makes a decision of what data to retrieve when, instead of just answering OS level requests. The elevator scenario is a good example of how performance can be increased and decreased as well. Say you have 100mb of data spread across the disk for squid and there is a continuous log file or some very random access files (such as a web server). As file writes are being requested to that log file and data being request and written to the squid cache, it is possible that the squid cache would get lower precedence than the rest of the system. The flip is also true where the squid files are more continuous. But if this is a dedicated server only housing squid then you would probably see an improvement as there are no other apps really fighting for disk time. Just my $0.02 Gary Wayne Smith > -----Original Message----- > From: Matt [mailto:matt@xxxxxxxxxxxxxx] > Sent: Tuesday, July 18, 2006 9:09 AM > To: squid-users@xxxxxxxxxxxxxxx > Subject: SATA Native Command Queuing > > Does Squd perform better with SATA drives that support "Native Command > Queuing"? > > http://www.seagate.com/products/interface/sata/native.html > > Matt
