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Technical Specifications

Here is an example of technical features your Community network might have:

Feature
 Community SE
 Community HC
Equipment cabinets
 Two 25U racks on wheels with locking doors
Number of Servers
 10 14
Processors in each server Two 2-core Opteron Two or four 4-core Opteron
Operating System 64-bit Linux
Ethernet ports: Router
Ethernet ports: Servers
Ethernet ports: Maximum 		4 Gb/E + 1 F/E
2 Gb/E + 1 F/E
10 Gb/E + 1 F/E 		4 Gigabit Ethernet
2 Gigabit Ethernet
10 Gigabit Ethernet
Integrated firewall? Yes Yes
Memory (RAM)
· Proxy server
· Billing server
· All other servers
 Minimum/Maximum
8GB / 64GB
4GB / 16GB
4GB / 16GB
 Minimum / Maximum
32GB / 64GB
8GB / 32GB
16GB / 64GB
Power supplies
 Redundant Redundant
Total usable network hard disk storage1
 15TB SATA RAID 23TB SAS+SATA RAID
UPS back-up time: std/max2 41 / 360 minutes 28 / 260 minutes
LAN Switches
Managed/Unmanaged
Total ports
 Three 20-port gigabit
Unmanaged
60
 Five 12-port gigabit
Managed
60
Power requirement (nominal) ~2.3kW ~3.2kW
Weight ~828kg (1840lbs) ~960kg (2140lbs)
Design capacity (number of subscribers)3 10,000 dial-up
5,000 broadband
 20,000 dial-up
20,000 broadband


1RAID capacities are actual usable storage amounts. The RAID parity and spare drives are not added in to the storage figure.

2 Figures are approximate minutes. Some servers draw more power under heavy load.

3 Subscriber estimates are based on combined web and e-mail storage average of 200MB to 250MB per subscriber, dial-up speed of 50kbps, broadband speed of 1Mbps, 20% web traffic, instantaneous usage of 3%, and 30% proxy efficiency. Your actual subscriber capacity will depend on the speed of service, services offered, and many other variables.