> For a large network (say 100 servers and 2500 disks), are there any > strong advantages to using separate switch and physical network > instead of VLAN? Physical isolation will ensure that congestion on one does not affect the other. On the flip side, asymmetric network failures tend to be more difficult to troubleshoot eg. backend failure with functional front end. That said, in a pinch you can switch to using the front end network for both until you can repair the backend. > Also, how difficult it would be to switch from a VLAN to using > separate switches later? Should be relatively straight forward. Simply configure the VLAN/subnets on the new physical switches and move links over one by one. Once all the links are moved over you can remove the VLAN and subnets that are now on the new kit from the original hardware. -- Kyle _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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