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Does one need a special port multiplex aware set of disk drives? and a port multiplex controller? Or does standard sata controllers support port multiplexing? Dan Ritter wrote: > On Thu, Nov 19, 2009 at 02:38:22PM -0500, Stephen Adler wrote: > >> Something tells me that the port multiplexer will degrade the >> performance of your disk array. Is this of any real concern? >> > > SATA is rated at 1.5 or 3 Gb/s *; if this is a bottleneck for all > the disks behind it, then yes. Otherwise, no. > > If the server is connected by 1 gigabit ethernet, for instance, > it really isn't likely that the port multiplexer is the problem. > Similarly, if you have 4 disks behind a 3Gb/s port multiplier, even > with all of them active, you would have to have simultaneous > cache hits on all the disks for this to be an issue... > > *and I believe 6 just came out, but it's labelled SATA2. > > -dsr- > >
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