Hi, On 22.12.2010, at 19:21, Gotwalt, P. wrote: > I have 4 nodes with each 4 disks. I want to have the best performance so > I will make a stripe of these 4 servers. But how can I get the best > performance out of each server? > > 1 - Make a software stripe (with md raid0) over all the internal disks > and export this as 1 volume, and then > volume create performance-volume stripe 4 node1:/bigdisk node2:/bigdisk > node3:/bigdisk node4:/bigdisk > Raid0? Seriously? - You know that 0 Data can be rescued if one of those disks crashes? We have 12disk RAID6 Storage servers with software RAID. 3 Gbit ports and performance is great. Adding each single disk via gluster is mainly a lot of typing work. Thus we decided to do the Software raid layer and use its management capabilities, then add glusterfs atop of that. I guess it depends on you workloads. Depending on the network links between you storage nodes and you client nodes, you might not need to tune a lot for speed. (If you have one single Gbit link and your lan is Gbit then Gbit is your bottleneck and not the raid-pattern.... Here again raid0 would give you no performance gain at all. --udo. -- :: udo waechter - root at zoide.net :: N 52?16'30.5" E 8?3'10.1" :: genuine input for your ears: http://auriculabovinari.de :: your eyes: http://ezag.zoide.net :: your brain: http://zoide.net
