| Publisher | Microsoft | ||
|---|---|---|---|
| Format | 322.0KB PDF, requires Acrobat Rdr 5 | Date added | 01 Dec 1999 |
| Topics | Load Balancing, High Availability, Scalability, Application Servers | ||
| Downloads | 28 | ||
The key scalability technique is to replicate a service at many nodes. The simplest form of replication, copies both programs and data. These shared-nothing clones can be as easy to manage as a single instance – yet they provide both scalability and availability (RACS). Shared-nothing clones are not appropriate for large databases or update-intensive services. For these applications, services can be mapped onto packed-partitions. Packs make partitions highly available by automatically restarting a failed partition on another node with access to the failed partition’s storage. Middleware is responsible for making the management of these partitions as simple as the management of a single node (RAPS).
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