Neither am I sure on this regard! But just thought of sharing a worthy info with you all which I came across while surfing.
An important component to any hosting operation is quality of service. The best way for resellers to make certain that they are offering the best services possible is to contract Web hosting from a higher-tier provider under the auspices of a service-level agreement. A service-level agreement (SLA) is a contract between a carrier and a customer that defines the terms of the carrier's responsibility to that customer, and the type and extent of remuneration if those responsibilities are not met. Such an agreement commits a service provider to a pre-determined level of performance based on specific criteria. Penalties are levied if the service provider fails to meet commitments.
Previously, SLAs only applied to telecommunications carriers and data processing service providers. With the advent of the Internet, networked business applications and Web host outsourcing, the service level agreement has been extended to cover a larger array of business situations.
Besides, Network latency guarantees will ensure that customers will always be able to access network resources at a specific speed.
Resellers should also consider whether the remedies offered by the higher-tier host are sufficient in cause of failure.