On Sat, Apr 17, 2010 at 15:19, Tim Cook <t...@cook.ms> wrote: > > > On Sat, Apr 17, 2010 at 2:12 PM, Harry Putnam <rea...@newsguy.com> wrote: > >> Tim Cook <t...@cook.ms> writes: >> >> > On Fri, Apr 16, 2010 at 7:35 PM, Harry Putnam <rea...@newsguy.com> >> wrote: >> > >> >> "Eric D. Mudama" <edmud...@bounceswoosh.org> writes: >> >> >> >> > On Thu, Apr 15 at 23:57, Günther wrote: >> >> >>hello >> >> >> >> >> >>if you are looking for pci-e (8x), i would recommend sas/sata >> controller >> >> >>with lsi 1068E sas chip. they are nearly perfect with opensolaris. >> >> > >> >> > For just a bit more, you can get the LSI SAS 9211-9i card which is >> >> > 6Gbit/s. It works fine for us, and does JBOD no problem. >> >> >> >> I can't resist getting in a similar questions here. Its not so easy >> >> to really get good info about this subject... there is a lot of info >> >> on the subject but when you remove all pci-e info .. maybe not so >> >> much. >> >> >> >> I will be needing a 4 or more port PCI sata controller soon and would >> >> like to get one that can make use of the newest sata (alleged) 3GB >> >> transfer rates. >> >> >> >> It's older base hardware... athlon64 3400+ 2.2 ghz 3GB Ram >> >> With A-open AK86-L Motherboard. >> >> >> >> So what do any of you know about a PCI card that fills the bill? >> >> >> >> >> >> >> > If you're talking about standard PCI, and not PCI-e or PCI-X, there's no >> > reason to try to get a faster controller. A standard PCI slot can't >> even >> > max out the first revision of SATA. >> >> Ahh good to know. So will sata2 drives have any trouble with a plain >> pci sata controller. >> >> I have no option for pci-e or whatever. just PCI. And I need at >> least a 4 port, whether its faster or not. >> >> > They'll work just fine, they'll just be very, very slow. IIRC, standard > PCI is limited to 33MB/sec. > > --Tim > > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss > > >From wikipedia, PCI is 133 MB <http://en.wikipedia.org/wiki/Megabyte>/s (32-bit at 33 MHz) 266 MB/s (32-bit at 66 MHz or 64-bit at 33 MHz) 533 MB/s (64-bit at 66 MHz)
Not quite the 3GB/s hoped for. But how fast do drives themselves tend to be? I rarely see above 80-100MB/s, although my drives are just consumer-level 7200RPM ones - nothing brilliant.
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