Extra Large

Double Extra Large

Extra LargeWith Caching

Double Extra LargeWith Caching

HTTP requests per second 2,000 20,000 100,000 100,000
SSL requests per second 1,000 5,000 5,000

High Availability

  • Customers who subscribe to either Medium or Large Size VLBs can contract HA (High Availability) services to ensure maximum redundancy. These customers will not only attain resiliency at the device level, but to achieve a secondary level of resilience via a Second Network Uplink, a VFA in HA is mandatory.
  • Additional subscription of dedicated VFA instance is mandatory to ensure that there is no performance degradation. In VLB HA subscription it is recommended to subscribe to VFA HA services to even ensure Network resiliency if desired.
  • Though the Cloud by design is resilient to any instance / hardware failure, Netmagic provides an additional layer of resiliency on the Network path i.e. the uplink to the customer setup and thus provide a maximum level of protection from any kind of device or network failures.
  • Customers subscribing to Cloud HA Load Balancer Services get 2 VLB appliances on 2 separate Grids. As mentioned above, for better resiliency even at the Network Level, the Customer should contract for a VFA also in HA, so that these 2 VFA’s then get connected to the 2 separate Uplinks Paths to 2 separate Core Networks within the Netmagic datacenter.
  • The HA works on a failover mode and in the event that the primary VLB instance is unavailable, the secondary instance will take over immediately and resume protection of the customer’s Cloud infrastructure without any service disruption.

NOTE: Billing for the Customers who subscribe to the HA service, will be based on the aggregation/addition of data transfer of both VLB instances.

Long Description List Price (INR)
Small 1,200
Medium 1,900
Medium with HA 3,400
Large 2,500
Large with HA 4,500
Extra Large 5,000
Extra Large with Caching 7,000
Extra Large with HA 8,750
Extra Large with HA and Caching 12,250
Extra Extra Large 6,000
Extra Extra Large with Caching 8,000
Extra Extra Large with HA 10,500
Extra Extra Large with HA and Caching 14,000

Load Balancing Options

  • Round Robin

    As the name indicates in the Round Robin method each server is used sequentially, according to their weights. The requests received by the load balancer are distributed to the VMs on a round-robin basis which means the first request to the first available server the second request goes to the second available server and so on. This is the default option provided in the VLB UI.

  • Least Connection

    The server with the lowest number of connections receives the next incoming connection. Round-robin is performed within groups of servers of the same load to ensure that all servers will be used.

  • Source IP

    The source IP address is hashed and divided by the total weight of the running servers to designate which server will receive the request. This ensures that the same client IP address will always reach the same server as long as no server is unreachable. If the hash result changes due to the number of running servers changing, many clients will be directed to a different server. This algorithm is generally used in TCP mode where no cookie may be inserted.

SSL Offloading

Customers who want to host SSL-based websites can use the SSL offloading support supported on Large VLB instance which needs to be mandatorily mapped to a dedicated VFA Large Instance. Using this feature will enable the VLB to accept incoming https connections on port 443 on the VLB and forward them to the VMs as http traffic. Customers can use either self signed certificate or they can upload certificate signed by third party certificate authorities like Thawte, Versign, etc.

NOTE: Please ensure that the VFA model contracted is capable of handling the traffic the VLB is estimated to handle.