Database Reference
In-Depth Information
Table 9.1
DRaaS Tiered Offering
Tiering the solution accomplishes many objectives. The first is that it simplifies the
disaster recovery planning process. It reduces the cost of disaster recovery while
making cost more predictable and manageable. It flushes out noncritical systems from
the recovery plan, accomplished via Tier 5. Providing zero RPO/RTO in the event of a
disaster provides for the use of an existing technology (for example, tape) that
investments have been made in but does not plan into the future direction of the
organization.
Finally, remember that we work in IT. Murphy (aka Murphy's Law) has a cubicle three
down from where you sit. Despite your best efforts—flawless designs, impeccable
implementations—something, somewhere will go wrong. Make sure you have plans to
recover and be sure to regularly test these plans.
vSphere High Availability
vSphere has been designed with performance and availability in mind. VMware has
designed vSphere to be the most performant (yes, I know that is not a word) and highly
