I have the Supermicro AOC card and use 4 Samsung 500GB drives with Opensolaris b67. [EMAIL PROTECTED] and 1 GB RAM. No PCI-X slot. The card fit into a PCI slot, but gets degraded performance.
>From another forum: "As you said, a normal PCI at 32bit/33MHz has a peak transfer rate at about 133MB/sec. Which is not far from SATA II 150MB/sec, but it would be nice if I could get a full 150MB/sec - but it wont happen with this card, unless it is either 64bit or 66Mhz - then the transfer rate will increase to 267MB/sec http://en.wikipedia.org/wiki/List_of_device_bandwidths If used correctly as a PCI-X card, the max theoretical bandwidth with this card is 1.07GB/sec, which should suffice for most people's need. The manual claims the card is 64bit 133MHz PCI-X. Maybe it will downgrade to 32bit/33MHz? Well see. http://www.supermicro.com/products/a...C-SAT2-MV8.cfm"; Mail from the manufacturer: "The card will work on a 32 bit slot as long as the slot provides 3.3 volt. This is called PCI 32 spec 2.1." The SATA card autodetects and just works great. Ive tried to disconnect one drive and rebooted, everything went fine. I could read from 3 drives and write to 3 drives. ZFS complained, but no problems. Then I rebooted, reconnected the 4th drive and everything went fine. However, I have like 20-40MB/sec speed read, because of the P4 CPU. 64bit CPU should allow read speeds in excess of 100MB/sec. The X4500 with Dual core opteron and 48 harddrives, have read speed >600MB/sec. ZFS is 128 bit and doesnt like 32 bit CPU. Soon, I will upgrade to a penryn QX9450 and an intel G45 chipset (it is similar to 780G chipset, read my post about it. 780G idles at 1W and can by itself play highdef video without lag. 55nm) and the penryn idles at less than 10W. The zfs raid pool should work without any problems, switching from 32 bit cpu to 64 bit cpu. This message posted from opensolaris.org _______________________________________________ opensolaris-discuss mailing list [email protected]
