>> [...] >> The results were the same with 10 or 25 drives, so I suspected either the >> PCI bus, either the expander in the 25-drives bay (HP 530946-001). >> Plugging the disks directly to the LSI card allowed to gain few MB/s : >> the expander was limiting a bit, but moreover, it disallowed to use more >> than 1 disk controller ! >> [...] > > That's correct that you've run into the limitation of the expander on the > 25-disk drive backplane. However, I'm curious about the 8-drive cage you > mention. I use that cage in the ML/DL370 G6 servers. I didn't think it > would fit into a DL180 G6. How is this arranged in your unit? What does > the resulting setup look like? Sine the DL180 drive cages are part of the > bezel, do you just have three loose cages connected to the controllers?
It was not as easy that "just unplug the 25-drives bay and plus 3 8 drives-bays".. Few rivets to drill, backplane alimentation cable to trick (the pins and wires colors are not the same !), minimolex <-> molex cable the drives alimentation, and some screw to fix the cages. The result is really clean. Here are few pictures : http://www.flickr.com/photos/webzinemaker/6964036523/in/photostream/ > Also, with three controllers, didn't you max the number of available PCIe > slots? 4 slots are available on the DL180 : 3 were used for the LSI controllers, and one for a nic. > > Anyway, the new HP SL4540 server is the next product worth testing in this > realmŠ 60 x LFF disks. > http://h18004.www1.hp.com/products/quickspecs/14406_na/14406_na.html I might be a very good alternative for the X4540... But I wonder how many controllers are connected, and what are their perfs. -- Grégory Giannoni http://www.wmaker.net _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
