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* Emulab assumes a minimum of two dedicated server machines, known hereafter as 'boss' and 'ops', for Emulab setup. In the past we have supported use of a separate, dedicated filesystem server, 'fs', but we now encourage use of the 'ops' server to host the Emulab shared filesystems. People have set up the Emulab servers as VMs under VMWare and as of the FreeBSD 10 based release, these servers can be instantiated as VMs under Xen (4.9 or 4.11) as well.
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* For boss and ops server (VM) resources, we recommend that each machine have at least 4 cores and 16GB of RAM; more is better. The amount of disk space required depends on how many users you plan to support, but certainly no less than 1TB on each. It is better to have a separate boot disk on which you can install the OS (FreeBSD), and then an additional one or more disks for the Emulab bits. Redundancy for the latter can be achieved by either using a hardware RAID configuration on the extra disks or by using ZFS to configure the disks within FreeBSD.
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* You will need at least two network interfaces on each experimental node: one for the control network and one for the experimental network. The experimental network needs to be one on which you can make VLANs with SNMP. Currently, Emulab supports:
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* Dell 'S' and 'Z' series switches running OS9 and OS10. We use these extensively, including S3048, S3148, S4048, S5248, Z9100, Z9264, and Z9500. We do not support the 'N' series switches.
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