> On 5/6/2011 6:45 AM, Jack Patteeuw wrote: > >> I put a LSI SAS-3800X on my Sun Blade 2000, and it > >> works fine. > >> (I am using it with SAS rather than SATA drives, > but > >> it should work with either. > >> Right now, I have a pair of 1TB drives and a > >> pair of 2TB drives, all Seagate, in an > enhance-tech > >> E8-ML 8 slot JBOD enclosure.) > > Sound like a good solution, even if it is kind of > pricey (watching eBay). > > > > The LSI 3800X is listed as having a PCI-X interface > and the Sun Blade 2000/2500 only have PCI (33 and 66 > Mhz) slots. > > > > Is PCI-X downward compatible with PCI ? > Yes. PCI-X cards will fit in 3.3V PCI slots, though > (of course), they're > restricted to the PCI bandwidth (33Mhz/32-bit). They > won't work in the > 5V PCI slots, but I'm 99.999% sure that the SB2500 > uses the 3.3V PCI > slots (as the 5V ones were obsoleted in the early > 2000s).
AFAIK, the 33/66MHz slot(s) (1 in the 2000, 3 in the 2500) are 3.3V, and the 33MHz only slots are 5V. 3.3V cards are keyed so that they can only fit into 3.3V slots (and not get fried). I _think_ the LSI 3800x at least will run at 66MHz in a 66MHz slot. Being PCI-X, it can go up to 133MHz, but it might as well throttle back to 1/2 (66MHz) rather than 1/4 (33MHz). Not sure how to check that. I recall being totally blown away at how fast it was for sequential access; much faster than the internal FC/AL drives on my 2000, even though they are10K RPM drives and the SAS drives are only 7200 RPM drives. -- This message posted from opensolaris.org _______________________________________________ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
