On Tue, Feb 9, 2010 at 3:01 PM, Dan Langille <d...@langille.org> wrote: > > On Tue, February 9, 2010 9:09 am, Tom Evans wrote: >> On Tue, Feb 9, 2010 at 1:45 PM, Dan Langille <d...@langille.org> wrote: >> One thing to point out about using a PM like this: you won't get >> fantastic bandwidth out of it. For my needs (home storage server), >> this really doesn't matter, I just want oodles of online storage, with >> redundancy and reliability. > > > A PM? What's that? > > Yes, my priority is reliable storage. Speed is secondary. > > What bandwidth are you getting? >
PM = Port Multiplier I'm getting disk speed, as I only have one device behind the PM currently (just making sure it works properly :). The limits are that the link from siis to the PM is SATA (3Gb/s, 375MB/s), and the siis sits on a PCIe 1x bus (2Gb/s, 250 MB/s), so the bandwidth from that is shared amongst the up-to 5 disks behind the PM. Writing from /dev/zero to the pool, I get around 120MB/s. Reading from the pool, and writing to /dev/null, I get around 170 MB/s. Cheers Tom _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
